commit 5a2a715a11fd01a92d49a0c8e2a4b237126b7a0a
Author: sergeyyarkov <serzh.yarkov@gmail.com>
Date:   Fri Feb 3 21:16:04 2023 +0300

    final

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e69de29
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ff6ecd4
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+SRC_FILE = firmware
+MCU = t2313
+PROGRAMMER = usbtiny
+
+build:
+	avrasm2 -fI -W+ie $(SRC_FILE).asm -l $(SRC_FILE).lss
+
+flash:
+	avrdude -c $(PROGRAMMER) -p $(MCU) -U flash:w:$(SRC_FILE).hex:i
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5b2a72e
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# Shift Register Example with USI module
+
+This project is an example of using the 74HC595 shift register with the AVR ATtiny2313A microcontroller. The code in the project uses the Universal Serial Interface (USI) module on the ATtiny2313A to transmit data to the 74HC595 shift register. The transfer of data is managed using the USI Overflow Interrupt Flag, and once the transfer is completed, a pulse is sent to the LATCH pin to copy the data from the shift register to the storage register. This project demonstrates how to use the 74HC595 shift register in combination with the ATtiny2313A microcontroller to control a series of outputs.
+
+![simulation](./simulation.gif)
+
+Also see [this](https://github.com/sergeyyarkov/attiny2313a_shift-register-example) example of interaction with a shift register without a USI module
diff --git a/firmware.asm b/firmware.asm
new file mode 100644
index 0000000..0ecb183
--- /dev/null
+++ b/firmware.asm
@@ -0,0 +1,116 @@
+;
+; Project name: shift-register-example
+; Description: An example of using the single 74HC595 shift register with an AVR microcontroller
+; Source code: https://github.com/sergeyyarkov/attiny2313a_shift-register-example
+; Device: ATtiny2313A
+; Device Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8246.pdf
+; Package: SOIC-20W_7.5x12.8mm_P1.27mm
+; Assembler: AVR macro assembler 2.2.7
+; Clock frequency: 8 MHz Internal with CKDIV8
+; Fuses: lfuse: 0x64, hfuse: 0x9F, efuse: 0xFF, lock: 0xFF
+;
+; Written by Sergey Yarkov 28.01.2023
+
+.INCLUDE "tn2313Adef.inc"
+.LIST
+
+.DEF TEMP_REG_A           = r16               ; Temp register A
+.DEF TEMP_REG_B           = r17               ; Temp register B
+.DEF DATA                 = r20               ; DATA to transmit
+
+;========================================;
+;                LABELS                  ;
+;========================================;
+
+.EQU USI_LATCH_PIN              = PB0         ; ST_CP on 74HC595
+.EQU USI_DO_PIN                 = PB6         ; DS on 74HC595
+.EQU USI_CLK_PIN                = PB7         ; SH_CP on 74HC595
+
+;========================================;
+;              CODE SEGMENT              ;
+;========================================;
+
+.CSEG
+.ORG 0x00
+
+;========================================;
+;                VECTORS                 ;
+;========================================;
+
+rjmp 	RESET_vect			      ; Program start at RESET vector
+
+RESET_vect:
+  ;========================================;
+  ;        INITIALIZE STACK POINTER        ;
+  ;========================================;
+
+  ldi       TEMP_REG_A, low(RAMEND)
+  out       SPL, TEMP_REG_A
+
+MCU_INIT:
+  rcall     INIT_PORTS
+  ldi       DATA, 0b00000001
+  rjmp      LOOP
+
+;========================================;
+;            MAIN PROGRAM LOOP           ;
+;========================================;
+
+LOOP:
+  rcall     USI_TRANSMIT
+  rol       DATA
+  rcall     DELAY
+  rjmp      LOOP
+
+INIT_PORTS:
+  ldi       r16, (1<<USI_CLK_PIN) | (1<<USI_DO_PIN) | (1<<USI_LATCH_PIN)
+  out       DDRB, r16
+ret
+;========================================;
+;          SEND BYTE TO 74HC595          ;
+;========================================;
+
+USI_TRANSMIT:
+  ; Move the value stored in DATA into the R19 register
+  mov       r19, DATA
+  out       USIDR, r19
+
+  ; Enable the USI Overflow Interrupt Flag (will be 0 if transfer is not completed)
+  ldi       r19, (1<<USIOIF)      
+  out       USISR, r19
+  
+  ; Load the USI settings into a temp register to set up the USI for Three-wire mode
+  ; with software clock strobe (USITC) and external positive edge toggle of USCK
+  ;
+  ; USIWM0 <--------------> USI Wire Mode
+  ; USICS1 <--------------> USI Clock Source Select
+  ; USICLK <--------------> USI Clock Strobe
+  ; USITC  <--------------> USI Toggle Clock (Enable clock generation)      
+  ldi       TEMP_REG_A, (1<<USIWM0) | (1<<USICS1) | (1<<USICLK) | (1<<USITC)
+  
+  _USI_TRANSMIT_LOOP:             ; Execute the loop until the transfer is completed (USIOIF is 0)
+    out       USICR, TEMP_REG_A   ; Load the settings from the temp register into the USI Control Register
+    sbis      USISR, USIOIF       ; Check if transfer is completed and exit loop if it is
+    rjmp      _USI_TRANSMIT_LOOP
+
+  ; Send a pulse to the LATCH pin to copy the byte from the 74hc595 shift register 
+  ; to the storage register
+  sbi      PORTB, USI_LATCH_PIN
+  cbi      PORTB, USI_LATCH_PIN
+ret
+
+DELAY:
+  push      TEMP_REG_A
+  ldi       TEMP_REG_A, 70
+  _DELAY_1:
+    ldi     TEMP_REG_B, 255   
+  _DELAY_2:
+    dec     TEMP_REG_B         
+    nop                 
+    nop                
+    nop                 
+    brne    _DELAY_2    
+    dec     TEMP_REG_A
+    brne    _DELAY_1
+  pop       TEMP_REG_A    
+ret                    
\ No newline at end of file
diff --git a/firmware.hex b/firmware.hex
new file mode 100644
index 0000000..44e317d
--- /dev/null
+++ b/firmware.hex
@@ -0,0 +1,7 @@
+:020000020000FC
+:1000000000C00FED0DBF06D041E000C006D0441F78
+:100010000FD0FCCF01EC07BB0895342F3FB930E47B
+:100020003EB90BE10DB9769BFDCFC09AC0980895FB
+:100030000F9306E41FEF1A95000000000000D9F7A7
+:080040000A95C1F70F91089524
+:00000001FF
diff --git a/firmware.lss b/firmware.lss
new file mode 100644
index 0000000..ce5a652
--- /dev/null
+++ b/firmware.lss
@@ -0,0 +1,872 @@
+
+AVRASM ver. 2.2.7  firmware.asm Fri Feb 03 20:50:28 2023
+
+firmware.asm(14): Including file 'tn2313Adef.inc'
+firmware.asm(14): Including file 'tn2313Adef.inc'
+                                 
+                                 
+                                 ; Project name: shift-register-example
+                                 ; Description: An example of using the single 74HC595 shift register with an AVR microcontroller
+                                 ; Source code: https://github.com/sergeyyarkov/attiny2313a_shift-register-example
+                                 ; Device: ATtiny2313A
+                                 ; Device Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8246.pdf
+                                 ; Package: SOIC-20W_7.5x12.8mm_P1.27mm
+                                 ; Assembler: AVR macro assembler 2.2.7
+                                 ; Clock frequency: 8 MHz Internal with CKDIV8
+                                 ; Fuses: lfuse: 0x64, hfuse: 0x9F, efuse: 0xFF, lock: 0xFF
+                                 ;
+                                 ; Written by Sergey Yarkov 28.01.2023
+                                 
+                                 .INCLUDE "tn2313Adef.inc"
+                                 
+                                 ;***** Created: 2011-02-09 12:04 ******* Source: ATtiny2313A.xml *********
+                                 ;*************************************************************************
+                                 ;* A P P L I C A T I O N   N O T E   F O R   T H E   A V R   F A M I L Y
+                                 ;* 
+                                 ;* Number            : AVR000
+                                 ;* File Name         : "tn2313Adef.inc"
+                                 ;* Title             : Register/Bit Definitions for the ATtiny2313A
+                                 ;* Date              : 2011-02-09
+                                 ;* Version           : 2.35
+                                 ;* Support E-mail    : avr@atmel.com
+                                 ;* Target MCU        : ATtiny2313A
+                                 ;* 
+                                 ;* DESCRIPTION
+                                 ;* When including this file in the assembly program file, all I/O register 
+                                 ;* names and I/O register bit names appearing in the data book can be used.
+                                 ;* In addition, the six registers forming the three data pointers X, Y and 
+                                 ;* Z have been assigned names XL - ZH. Highest RAM address for Internal 
+                                 ;* SRAM is also defined 
+                                 ;* 
+                                 ;* The Register names are represented by their hexadecimal address.
+                                 ;* 
+                                 ;* The Register Bit names are represented by their bit number (0-7).
+                                 ;* 
+                                 ;* Please observe the difference in using the bit names with instructions
+                                 ;* such as "sbr"/"cbr" (set/clear bit in register) and "sbrs"/"sbrc"
+                                 ;* (skip if bit in register set/cleared). The following example illustrates
+                                 ;* this:
+                                 ;* 
+                                 ;* in    r16,PORTB             ;read PORTB latch
+                                 ;* sbr   r16,(1<<PB6)+(1<<PB5) ;set PB6 and PB5 (use masks, not bit#)
+                                 ;* out   PORTB,r16             ;output to PORTB
+                                 ;* 
+                                 ;* in    r16,TIFR              ;read the Timer Interrupt Flag Register
+                                 ;* sbrc  r16,TOV0              ;test the overflow flag (use bit#)
+                                 ;* rjmp  TOV0_is_set           ;jump if set
+                                 ;* ...                         ;otherwise do something else
+                                 ;*************************************************************************
+                                 
+                                 #ifndef _TN2313ADEF_INC_
+                                 #define _TN2313ADEF_INC_
+                                 
+                                 
+                                 #pragma partinc 0
+                                 
+                                 ; ***** SPECIFY DEVICE ***************************************************
+                                 .device ATtiny2313A
+                                 #pragma AVRPART ADMIN PART_NAME ATtiny2313A
+                                 .equ	SIGNATURE_000	= 0x1e
+                                 .equ	SIGNATURE_001	= 0x91
+                                 .equ	SIGNATURE_002	= 0x0a
+                                 
+                                 #pragma AVRPART CORE CORE_VERSION V2
+                                 #pragma AVRPART CORE NEW_INSTRUCTIONS lpm rd,z+
+                                 
+                                 
+                                 ; ***** I/O REGISTER DEFINITIONS *****************************************
+                                 ; NOTE:
+                                 ; Definitions marked "MEMORY MAPPED"are extended I/O ports
+                                 ; and cannot be used with IN/OUT instructions
+                                 .equ	SREG	= 0x3f
+                                 .equ	SPL	= 0x3d
+                                 .equ	OCR0B	= 0x3c
+                                 .equ	GIMSK	= 0x3b
+                                 .equ	EIFR	= 0x3a
+                                 .equ	TIMSK	= 0x39
+                                 .equ	TIFR	= 0x38
+                                 .equ	SPMCSR	= 0x37
+                                 .equ	OCR0A	= 0x36
+                                 .equ	MCUCR	= 0x35
+                                 .equ	MCUSR	= 0x34
+                                 .equ	TCCR0B	= 0x33
+                                 .equ	TCNT0	= 0x32
+                                 .equ	OSCCAL	= 0x31
+                                 .equ	TCCR0A	= 0x30
+                                 .equ	TCCR1A	= 0x2f
+                                 .equ	TCCR1B	= 0x2e
+                                 .equ	TCNT1L	= 0x2c
+                                 .equ	TCNT1H	= 0x2d
+                                 .equ	OCR1AL	= 0x2a
+                                 .equ	OCR1AH	= 0x2b
+                                 .equ	OCR1BL	= 0x28
+                                 .equ	OCR1BH	= 0x29
+                                 .equ	CLKPR	= 0x26
+                                 .equ	ICR1L	= 0x24
+                                 .equ	ICR1H	= 0x25
+                                 .equ	GTCCR	= 0x23
+                                 .equ	TCCR1C	= 0x22
+                                 .equ	WDTCR	= 0x21
+                                 .equ	PCMSK0	= 0x20
+                                 .equ	EEAR	= 0x1e
+                                 .equ	EEDR	= 0x1d
+                                 .equ	EECR	= 0x1c
+                                 .equ	PORTA	= 0x1b
+                                 .equ	DDRA	= 0x1a
+                                 .equ	PINA	= 0x19
+                                 .equ	PORTB	= 0x18
+                                 .equ	DDRB	= 0x17
+                                 .equ	PINB	= 0x16
+                                 .equ	GPIOR2	= 0x15
+                                 .equ	GPIOR1	= 0x14
+                                 .equ	GPIOR0	= 0x13
+                                 .equ	PORTD	= 0x12
+                                 .equ	DDRD	= 0x11
+                                 .equ	PIND	= 0x10
+                                 .equ	USIDR	= 0x0f
+                                 .equ	USISR	= 0x0e
+                                 .equ	USICR	= 0x0d
+                                 .equ	UDR	= 0x0c
+                                 .equ	UCSRA	= 0x0b
+                                 .equ	UCSRB	= 0x0a
+                                 .equ	UBRRL	= 0x09
+                                 .equ	ACSR	= 0x08
+                                 .equ	BODCR	= 0x07
+                                 .equ	PRR	= 0x06
+                                 .equ	PCMSK2	= 0x05
+                                 .equ	PCMSK1	= 0x04
+                                 .equ	UCSRC	= 0x03
+                                 .equ	UBRRH	= 0x02
+                                 .equ	DIDR	= 0x01
+                                 
+                                 
+                                 ; ***** BIT DEFINITIONS **************************************************
+                                 
+                                 ; ***** PORTB ************************
+                                 ; PORTB - Port B Data Register
+                                 .equ	PORTB0	= 0	; Port B Data Register bit 0
+                                 .equ	PB0	= 0	; For compatibility
+                                 .equ	PORTB1	= 1	; Port B Data Register bit 1
+                                 .equ	PB1	= 1	; For compatibility
+                                 .equ	PORTB2	= 2	; Port B Data Register bit 2
+                                 .equ	PB2	= 2	; For compatibility
+                                 .equ	PORTB3	= 3	; Port B Data Register bit 3
+                                 .equ	PB3	= 3	; For compatibility
+                                 .equ	PORTB4	= 4	; Port B Data Register bit 4
+                                 .equ	PB4	= 4	; For compatibility
+                                 .equ	PORTB5	= 5	; Port B Data Register bit 5
+                                 .equ	PB5	= 5	; For compatibility
+                                 .equ	PORTB6	= 6	; Port B Data Register bit 6
+                                 .equ	PB6	= 6	; For compatibility
+                                 .equ	PORTB7	= 7	; Port B Data Register bit 7
+                                 .equ	PB7	= 7	; For compatibility
+                                 
+                                 ; DDRB - Port B Data Direction Register
+                                 .equ	DDB0	= 0	; Port B Data Direction Register bit 0
+                                 .equ	DDB1	= 1	; Port B Data Direction Register bit 1
+                                 .equ	DDB2	= 2	; Port B Data Direction Register bit 2
+                                 .equ	DDB3	= 3	; Port B Data Direction Register bit 3
+                                 .equ	DDB4	= 4	; Port B Data Direction Register bit 4
+                                 .equ	DDB5	= 5	; Port B Data Direction Register bit 5
+                                 .equ	DDB6	= 6	; Port B Data Direction Register bit 6
+                                 .equ	DDB7	= 7	; Port B Data Direction Register bit 7
+                                 
+                                 ; PINB - Port B Input Pins
+                                 .equ	PINB0	= 0	; Port B Input Pins bit 0
+                                 .equ	PINB1	= 1	; Port B Input Pins bit 1
+                                 .equ	PINB2	= 2	; Port B Input Pins bit 2
+                                 .equ	PINB3	= 3	; Port B Input Pins bit 3
+                                 .equ	PINB4	= 4	; Port B Input Pins bit 4
+                                 .equ	PINB5	= 5	; Port B Input Pins bit 5
+                                 .equ	PINB6	= 6	; Port B Input Pins bit 6
+                                 .equ	PINB7	= 7	; Port B Input Pins bit 7
+                                 
+                                 
+                                 ; ***** TIMER_COUNTER_0 **************
+                                 ; TIMSK - Timer/Counter Interrupt Mask Register
+                                 .equ	OCIE0A	= 0	; Timer/Counter0 Output Compare Match A Interrupt Enable
+                                 .equ	TOIE0	= 1	; Timer/Counter0 Overflow Interrupt Enable
+                                 .equ	OCIE0B	= 2	; Timer/Counter0 Output Compare Match B Interrupt Enable
+                                 
+                                 ; TIFR - Timer/Counter Interrupt Flag register
+                                 .equ	OCF0A	= 0	; Timer/Counter0 Output Compare Flag 0A
+                                 .equ	TOV0	= 1	; Timer/Counter0 Overflow Flag
+                                 .equ	OCF0B	= 2	; Timer/Counter0 Output Compare Flag 0B
+                                 
+                                 ; OCR0B - Timer/Counter0 Output Compare Register
+                                 .equ	OCR0_0	= 0	; 
+                                 .equ	OCR0_1	= 1	; 
+                                 .equ	OCR0_2	= 2	; 
+                                 .equ	OCR0_3	= 3	; 
+                                 .equ	OCR0_4	= 4	; 
+                                 .equ	OCR0_5	= 5	; 
+                                 .equ	OCR0_6	= 6	; 
+                                 .equ	OCR0_7	= 7	; 
+                                 
+                                 ; OCR0A - Timer/Counter0 Output Compare Register
+                                 .equ	OCR0A_0	= 0	; 
+                                 .equ	OCR0A_1	= 1	; 
+                                 .equ	OCR0A_2	= 2	; 
+                                 .equ	OCR0A_3	= 3	; 
+                                 .equ	OCR0A_4	= 4	; 
+                                 .equ	OCR0A_5	= 5	; 
+                                 .equ	OCR0A_6	= 6	; 
+                                 .equ	OCR0A_7	= 7	; 
+                                 
+                                 ; TCCR0A - Timer/Counter  Control Register A
+                                 .equ	WGM00	= 0	; Waveform Generation Mode
+                                 .equ	WGM01	= 1	; Waveform Generation Mode
+                                 .equ	COM0B0	= 4	; Compare Match Output B Mode
+                                 .equ	COM0B1	= 5	; Compare Match Output B Mode
+                                 .equ	COM0A0	= 6	; Compare Match Output A Mode
+                                 .equ	COM0A1	= 7	; Compare Match Output A Mode
+                                 
+                                 ; TCNT0 - Timer/Counter0
+                                 .equ	TCNT0_0	= 0	; 
+                                 .equ	TCNT0_1	= 1	; 
+                                 .equ	TCNT0_2	= 2	; 
+                                 .equ	TCNT0_3	= 3	; 
+                                 .equ	TCNT0_4	= 4	; 
+                                 .equ	TCNT0_5	= 5	; 
+                                 .equ	TCNT0_6	= 6	; 
+                                 .equ	TCNT0_7	= 7	; 
+                                 
+                                 ; TCCR0B - Timer/Counter Control Register B
+                                 .equ	TCCR0	= TCCR0B	; For compatibility
+                                 .equ	CS00	= 0	; Clock Select
+                                 .equ	CS01	= 1	; Clock Select
+                                 .equ	CS02	= 2	; Clock Select
+                                 .equ	WGM02	= 3	; 
+                                 .equ	FOC0B	= 6	; Force Output Compare B
+                                 .equ	FOC0A	= 7	; Force Output Compare B
+                                 
+                                 
+                                 ; ***** TIMER_COUNTER_1 **************
+                                 ; TIMSK - Timer/Counter Interrupt Mask Register
+                                 .equ	ICIE1	= 3	; Timer/Counter1 Input Capture Interrupt Enable
+                                 .equ	TICIE	= ICIE1	; For compatibility
+                                 .equ	OCIE1B	= 5	; Timer/Counter1 Output CompareB Match Interrupt Enable
+                                 .equ	OCIE1A	= 6	; Timer/Counter1 Output CompareA Match Interrupt Enable
+                                 .equ	TOIE1	= 7	; Timer/Counter1 Overflow Interrupt Enable
+                                 
+                                 ; TIFR - Timer/Counter Interrupt Flag register
+                                 .equ	ICF1	= 3	; Input Capture Flag 1
+                                 .equ	OCF1B	= 5	; Output Compare Flag 1B
+                                 .equ	OCF1A	= 6	; Output Compare Flag 1A
+                                 .equ	TOV1	= 7	; Timer/Counter1 Overflow Flag
+                                 
+                                 ; TCCR1A - Timer/Counter1 Control Register A
+                                 .equ	WGM10	= 0	; Pulse Width Modulator Select Bit 0
+                                 .equ	PWM10	= WGM10	; For compatibility
+                                 .equ	WGM11	= 1	; Pulse Width Modulator Select Bit 1
+                                 .equ	PWM11	= WGM11	; For compatibility
+                                 .equ	COM1B0	= 4	; Comparet Ouput Mode 1B, bit 0
+                                 .equ	COM1B1	= 5	; Compare Output Mode 1B, bit 1
+                                 .equ	COM1A0	= 6	; Comparet Ouput Mode 1A, bit 0
+                                 .equ	COM1A1	= 7	; Compare Output Mode 1A, bit 1
+                                 
+                                 ; TCCR1B - Timer/Counter1 Control Register B
+                                 .equ	CS10	= 0	; Clock Select bit 0
+                                 .equ	CS11	= 1	; Clock Select 1 bit 1
+                                 .equ	CS12	= 2	; Clock Select1 bit 2
+                                 .equ	WGM12	= 3	; Waveform Generation Mode Bit 2
+                                 .equ	CTC1	= WGM12	; For compatibility
+                                 .equ	WGM13	= 4	; Waveform Generation Mode Bit 3
+                                 .equ	ICES1	= 6	; Input Capture 1 Edge Select
+                                 .equ	ICNC1	= 7	; Input Capture 1 Noise Canceler
+                                 
+                                 ; TCCR1C - Timer/Counter1 Control Register C
+                                 .equ	FOC1B	= 6	; Force Output Compare for Channel B
+                                 .equ	FOC1A	= 7	; Force Output Compare for Channel A
+                                 
+                                 
+                                 ; ***** WATCHDOG *********************
+                                 ; WDTCR - Watchdog Timer Control Register
+                                 .equ	WDTCSR	= WDTCR	; For compatibility
+                                 .equ	WDP0	= 0	; Watch Dog Timer Prescaler bit 0
+                                 .equ	WDP1	= 1	; Watch Dog Timer Prescaler bit 1
+                                 .equ	WDP2	= 2	; Watch Dog Timer Prescaler bit 2
+                                 .equ	WDE	= 3	; Watch Dog Enable
+                                 .equ	WDCE	= 4	; Watchdog Change Enable
+                                 .equ	WDTOE	= WDCE	; For compatibility
+                                 .equ	WDP3	= 5	; Watchdog Timer Prescaler Bit 3
+                                 .equ	WDIE	= 6	; Watchdog Timeout Interrupt Enable
+                                 .equ	WDIF	= 7	; Watchdog Timeout Interrupt Flag
+                                 
+                                 
+                                 ; ***** USART ************************
+                                 ; UDR - USART I/O Data Register
+                                 .equ	UDR0	= 0	; USART I/O Data Register bit 0
+                                 .equ	UDR1	= 1	; USART I/O Data Register bit 1
+                                 .equ	UDR2	= 2	; USART I/O Data Register bit 2
+                                 .equ	UDR3	= 3	; USART I/O Data Register bit 3
+                                 .equ	UDR4	= 4	; USART I/O Data Register bit 4
+                                 .equ	UDR5	= 5	; USART I/O Data Register bit 5
+                                 .equ	UDR6	= 6	; USART I/O Data Register bit 6
+                                 .equ	UDR7	= 7	; USART I/O Data Register bit 7
+                                 
+                                 ; UCSRA - USART Control and Status Register A
+                                 .equ	USR	= UCSRA	; For compatibility
+                                 .equ	MPCM	= 0	; Multi-processor Communication Mode
+                                 .equ	U2X	= 1	; Double the USART Transmission Speed
+                                 .equ	UPE	= 2	; USART Parity Error
+                                 .equ	PE	= UPE	; For compatibility
+                                 .equ	DOR	= 3	; Data overRun
+                                 .equ	FE	= 4	; Framing Error
+                                 .equ	UDRE	= 5	; USART Data Register Empty
+                                 .equ	TXC	= 6	; USART Transmitt Complete
+                                 .equ	RXC	= 7	; USART Receive Complete
+                                 
+                                 ; UCSRB - USART Control and Status Register B
+                                 .equ	UCR	= UCSRB	; For compatibility
+                                 .equ	TXB8	= 0	; Transmit Data Bit 8
+                                 .equ	RXB8	= 1	; Receive Data Bit 8
+                                 .equ	UCSZ2	= 2	; Character Size
+                                 .equ	CHR9	= UCSZ2	; For compatibility
+                                 .equ	TXEN	= 3	; Transmitter Enable
+                                 .equ	RXEN	= 4	; Receiver Enable
+                                 .equ	UDRIE	= 5	; USART Data register Empty Interrupt Enable
+                                 .equ	TXCIE	= 6	; TX Complete Interrupt Enable
+                                 .equ	RXCIE	= 7	; RX Complete Interrupt Enable
+                                 
+                                 ; UCSRC - USART Control and Status Register C
+                                 .equ	UCPOL	= 0	; Clock Polarity
+                                 .equ	UCSZ0	= 1	; Character Size Bit 0
+                                 .equ	UCSZ1	= 2	; Character Size Bit 1
+                                 .equ	USBS	= 3	; Stop Bit Select
+                                 .equ	UPM0	= 4	; Parity Mode Bit 0
+                                 .equ	UPM1	= 5	; Parity Mode Bit 1
+                                 .equ	UMSEL0 	= 6	; USART Mode Select 0
+                                 .equ 	UMSEL1 	= 7 ; USART Mode Select 1
+                                 .equ 	UCPHA  	= 1 ; USART MSPIM Clock Phase
+                                 .equ 	UDORD  	= 2 ; USART MSPIM Data Order 
+                                 
+                                 .equ	UBRR	= UBRRL	; For compatibility
+                                 
+                                 ; ***** ANALOG_COMPARATOR ************
+                                 ; ACSR - Analog Comparator Control And Status Register
+                                 .equ	ACIS0	= 0	; Analog Comparator Interrupt Mode Select bit 0
+                                 .equ	ACIS1	= 1	; Analog Comparator Interrupt Mode Select bit 1
+                                 .equ	ACIC	= 2	; 
+                                 .equ	ACIE	= 3	; Analog Comparator Interrupt Enable
+                                 .equ	ACI	= 4	; Analog Comparator Interrupt Flag
+                                 .equ	ACO	= 5	; Analog Compare Output
+                                 .equ	ACBG	= 6	; Analog Comparator Bandgap Select
+                                 .equ	ACD	= 7	; Analog Comparator Disable
+                                 
+                                 ; DIDR - Digital Input Disable Register 1
+                                 .equ	AIN0D	= 0	; AIN0 Digital Input Disable
+                                 .equ	AIN1D	= 1	; AIN1 Digital Input Disable
+                                 
+                                 
+                                 ; ***** PORTD ************************
+                                 ; PORTD - Data Register, Port D
+                                 .equ	PORTD0	= 0	; 
+                                 .equ	PD0	= 0	; For compatibility
+                                 .equ	PORTD1	= 1	; 
+                                 .equ	PD1	= 1	; For compatibility
+                                 .equ	PORTD2	= 2	; 
+                                 .equ	PD2	= 2	; For compatibility
+                                 .equ	PORTD3	= 3	; 
+                                 .equ	PD3	= 3	; For compatibility
+                                 .equ	PORTD4	= 4	; 
+                                 .equ	PD4	= 4	; For compatibility
+                                 .equ	PORTD5	= 5	; 
+                                 .equ	PD5	= 5	; For compatibility
+                                 .equ	PORTD6	= 6	; 
+                                 .equ	PD6	= 6	; For compatibility
+                                 
+                                 ; DDRD - Data Direction Register, Port D
+                                 .equ	DDD0	= 0	; 
+                                 .equ	DDD1	= 1	; 
+                                 .equ	DDD2	= 2	; 
+                                 .equ	DDD3	= 3	; 
+                                 .equ	DDD4	= 4	; 
+                                 .equ	DDD5	= 5	; 
+                                 .equ	DDD6	= 6	; 
+                                 
+                                 ; PIND - Input Pins, Port D
+                                 .equ	PIND0	= 0	; 
+                                 .equ	PIND1	= 1	; 
+                                 .equ	PIND2	= 2	; 
+                                 .equ	PIND3	= 3	; 
+                                 .equ	PIND4	= 4	; 
+                                 .equ	PIND5	= 5	; 
+                                 .equ	PIND6	= 6	; 
+                                 
+                                 
+                                 ; ***** EEPROM ***********************
+                                 ; EEAR - EEPROM Read/Write Access
+                                 .equ	EEARL	= EEAR	; For compatibility
+                                 .equ	EEAR0	= 0	; EEPROM Read/Write Access bit 0
+                                 .equ	EEAR1	= 1	; EEPROM Read/Write Access bit 1
+                                 .equ	EEAR2	= 2	; EEPROM Read/Write Access bit 2
+                                 .equ	EEAR3	= 3	; EEPROM Read/Write Access bit 3
+                                 .equ	EEAR4	= 4	; EEPROM Read/Write Access bit 4
+                                 .equ	EEAR5	= 5	; EEPROM Read/Write Access bit 5
+                                 .equ	EEAR6	= 6	; EEPROM Read/Write Access bit 6
+                                 
+                                 ; EEDR - EEPROM Data Register
+                                 .equ	EEDR0	= 0	; EEPROM Data Register bit 0
+                                 .equ	EEDR1	= 1	; EEPROM Data Register bit 1
+                                 .equ	EEDR2	= 2	; EEPROM Data Register bit 2
+                                 .equ	EEDR3	= 3	; EEPROM Data Register bit 3
+                                 .equ	EEDR4	= 4	; EEPROM Data Register bit 4
+                                 .equ	EEDR5	= 5	; EEPROM Data Register bit 5
+                                 .equ	EEDR6	= 6	; EEPROM Data Register bit 6
+                                 .equ	EEDR7	= 7	; EEPROM Data Register bit 7
+                                 
+                                 ; EECR - EEPROM Control Register
+                                 .equ	EERE	= 0	; EEPROM Read Enable
+                                 .equ	EEPE	= 1	; EEPROM Write Enable
+                                 .equ	EEWE	= EEPE	; For compatibility
+                                 .equ	EEMPE	= 2	; EEPROM Master Write Enable
+                                 .equ	EEMWE	= EEMPE	; For compatibility
+                                 .equ	EERIE	= 3	; EEProm Ready Interrupt Enable
+                                 .equ	EEPM0	= 4	; 
+                                 .equ	EEPM1	= 5	; 
+                                 
+                                 
+                                 ; ***** PORTA ************************
+                                 ; PORTA - Port A Data Register
+                                 .equ	PORTA0	= 0	; Port A Data Register bit 0
+                                 .equ	PA0	= 0	; For compatibility
+                                 .equ	PORTA1	= 1	; Port A Data Register bit 1
+                                 .equ	PA1	= 1	; For compatibility
+                                 .equ	PORTA2	= 2	; Port A Data Register bit 2
+                                 .equ	PA2	= 2	; For compatibility
+                                 
+                                 ; DDRA - Port A Data Direction Register
+                                 .equ	DDA0	= 0	; Data Direction Register, Port A, bit 0
+                                 .equ	DDA1	= 1	; Data Direction Register, Port A, bit 1
+                                 .equ	DDA2	= 2	; Data Direction Register, Port A, bit 2
+                                 
+                                 ; PINA - Port A Input Pins
+                                 .equ	PINA0	= 0	; Input Pins, Port A bit 0
+                                 .equ	PINA1	= 1	; Input Pins, Port A bit 1
+                                 .equ	PINA2	= 2	; Input Pins, Port A bit 2
+                                 
+                                 
+                                 ; ***** USI **************************
+                                 ; USIDR - USI Data Register
+                                 .equ	USIDR0	= 0	; USI Data Register bit 0
+                                 .equ	USIDR1	= 1	; USI Data Register bit 1
+                                 .equ	USIDR2	= 2	; USI Data Register bit 2
+                                 .equ	USIDR3	= 3	; USI Data Register bit 3
+                                 .equ	USIDR4	= 4	; USI Data Register bit 4
+                                 .equ	USIDR5	= 5	; USI Data Register bit 5
+                                 .equ	USIDR6	= 6	; USI Data Register bit 6
+                                 .equ	USIDR7	= 7	; USI Data Register bit 7
+                                 
+                                 ; USISR - USI Status Register
+                                 .equ	USICNT0	= 0	; USI Counter Value Bit 0
+                                 .equ	USICNT1	= 1	; USI Counter Value Bit 1
+                                 .equ	USICNT2	= 2	; USI Counter Value Bit 2
+                                 .equ	USICNT3	= 3	; USI Counter Value Bit 3
+                                 .equ	USIDC	= 4	; Data Output Collision
+                                 .equ	USIPF	= 5	; Stop Condition Flag
+                                 .equ	USIOIF	= 6	; Counter Overflow Interrupt Flag
+                                 .equ	USISIF	= 7	; Start Condition Interrupt Flag
+                                 
+                                 ; USICR - USI Control Register
+                                 .equ	USITC	= 0	; Toggle Clock Port Pin
+                                 .equ	USICLK	= 1	; Clock Strobe
+                                 .equ	USICS0	= 2	; USI Clock Source Select Bit 0
+                                 .equ	USICS1	= 3	; USI Clock Source Select Bit 1
+                                 .equ	USIWM0	= 4	; USI Wire Mode Bit 0
+                                 .equ	USIWM1	= 5	; USI Wire Mode Bit 1
+                                 .equ	USIOIE	= 6	; Counter Overflow Interrupt Enable
+                                 .equ	USISIE	= 7	; Start Condition Interrupt Enable
+                                 
+                                 
+                                 ; ***** EXTERNAL_INTERRUPT ***********
+                                 ; GIMSK - General Interrupt Mask Register
+                                 .equ  PCIE1 = 3 ;
+                                 .equ  PCIE2 = 4 ;
+                                 .equ	PCIE0	= 5	; 
+                                 .equ	INT0	= 6	; External Interrupt Request 0 Enable
+                                 .equ	INT1	= 7	; External Interrupt Request 1 Enable
+                                 
+                                 ; EIFR - Extended Interrupt Flag Register
+                                 .equ	GIFR	= EIFR	; For compatibility
+                                 .equ	PCIF0	= 5	; 
+                                 .equ  PCIF2	= 4   ;
+                                 .equ  PCIF1   = 3   ;
+                                 .equ	INTF0	= 6	; External Interrupt Flag 0
+                                 .equ	INTF1	= 7	; External Interrupt Flag 1
+                                 
+                                 ; PCMSK2 - Pin Change Interrupt Mask Register 2
+                                 .equ	PCINT11	= 0	; Pin Change Interrupt Mask 11
+                                 .equ	PCINT12	= 1	; Pin Change Interrupt Mask 12
+                                 .equ	PCINT13	= 2	; Pin Change Interrupt Mask 13
+                                 .equ	PCINT14	= 3	; Pin Change Interrupt Mask 14
+                                 .equ	PCINT15	= 4	; Pin Change Interrupt Mask 15
+                                 .equ	PCINT16	= 5	; Pin Change Interrupt Mask 16
+                                 .equ	PCINT17	= 6	; Pin Change Interrupt Mask 17
+                                 
+                                 ; PCMSK1 - Pin Change Interrupt Mask Register 1
+                                 .equ	PCINT8	= 0	; Pin Change Interrupt Mask 8
+                                 .equ	PCINT9	= 1	; Pin Change Interrupt Mask 9
+                                 .equ	PCINT10	= 2	; Pin Change Interrupt Mask 10
+                                 
+                                 
+                                 ; ***** CPU **************************
+                                 ; SREG - Status Register
+                                 .equ	SREG_C	= 0	; Carry Flag
+                                 .equ	SREG_Z	= 1	; Zero Flag
+                                 .equ	SREG_N	= 2	; Negative Flag
+                                 .equ	SREG_V	= 3	; Two's Complement Overflow Flag
+                                 .equ	SREG_S	= 4	; Sign Bit
+                                 .equ	SREG_H	= 5	; Half Carry Flag
+                                 .equ	SREG_T	= 6	; Bit Copy Storage
+                                 .equ	SREG_I	= 7	; Global Interrupt Enable
+                                 
+                                 ; SPMCSR - Store Program Memory Control and Status register
+                                 .equ	SPMEN	= 0	; Store Program Memory Enable
+                                 .equ	PGERS	= 1	; Page Erase
+                                 .equ	PGWRT	= 2	; Page Write
+                                 .equ	RFLB	= 3	; Read Fuse and Lock Bits
+                                 .equ	CTPB	= 4	; Clear Temporary Page Buffer
+                                 
+                                 ; MCUCR - MCU Control Register
+                                 .equ	ISC00	= 0	; Interrupt Sense Control 0 bit 0
+                                 .equ	ISC01	= 1	; Interrupt Sense Control 0 bit 1
+                                 .equ	ISC10	= 2	; Interrupt Sense Control 1 bit 0
+                                 .equ	ISC11	= 3	; Interrupt Sense Control 1 bit 1
+                                 .equ	SM0	= 4	; Sleep Mode Select Bit 0
+                                 .equ	SM	= SM0	; For compatibility
+                                 .equ	SE	= 5	; Sleep Enable
+                                 .equ	SM1	= 6	; Sleep Mode Select Bit 1
+                                 .equ	PUD	= 7	; Pull-up Disable
+                                 
+                                 ; CLKPR - Clock Prescale Register
+                                 .equ	CLKPS0	= 0	; Clock Prescaler Select Bit 0
+                                 .equ	CLKPS1	= 1	; Clock Prescaler Select Bit 1
+                                 .equ	CLKPS2	= 2	; Clock Prescaler Select Bit 2
+                                 .equ	CLKPS3	= 3	; Clock Prescaler Select Bit 3
+                                 .equ	CLKPCE	= 7	; Clock Prescaler Change Enable
+                                 
+                                 ; MCUSR - MCU Status register
+                                 .equ	PORF	= 0	; Power-On Reset Flag
+                                 .equ	EXTRF	= 1	; External Reset Flag
+                                 .equ	BORF	= 2	; Brown-out Reset Flag
+                                 .equ	WDRF	= 3	; Watchdog Reset Flag
+                                 
+                                 ; OSCCAL - Oscillator Calibration Register
+                                 .equ	CAL0	= 0	; Oscillatro Calibration Value Bit 0
+                                 .equ	CAL1	= 1	; Oscillatro Calibration Value Bit 1
+                                 .equ	CAL2	= 2	; Oscillatro Calibration Value Bit 2
+                                 .equ	CAL3	= 3	; Oscillatro Calibration Value Bit 3
+                                 .equ	CAL4	= 4	; Oscillatro Calibration Value Bit 4
+                                 .equ	CAL5	= 5	; Oscillatro Calibration Value Bit 5
+                                 .equ	CAL6	= 6	; Oscillatro Calibration Value Bit 6
+                                 
+                                 ; GTCCR - General Timer Counter Control Register
+                                 .equ	SFIOR	= GTCCR	; For compatibility
+                                 .equ	PSR10	= 0	; 
+                                 
+                                 ; PCMSK - Pin-Change Mask register
+                                 .equ	PCINT0	= 0	; Pin-Change Interrupt 0
+                                 .equ	PCINT1	= 1	; Pin-Change Interrupt 1
+                                 .equ	PCINT2	= 2	; Pin-Change Interrupt 2
+                                 .equ	PCINT3	= 3	; Pin-Change Interrupt 3
+                                 .equ	PCINT4	= 4	; Pin-Change Interrupt 4
+                                 .equ	PCINT5	= 5	; Pin-Change Interrupt 5
+                                 .equ	PCINT6	= 6	; Pin-Change Interrupt 6
+                                 .equ	PCINT7	= 7	; Pin-Change Interrupt 7
+                                 
+                                 ; GPIOR2 - General Purpose I/O Register 2
+                                 .equ	GPIOR20	= 0	; General Purpose I/O Register 2 bit 0
+                                 .equ	GPIOR21	= 1	; General Purpose I/O Register 2 bit 1
+                                 .equ	GPIOR22	= 2	; General Purpose I/O Register 2 bit 2
+                                 .equ	GPIOR23	= 3	; General Purpose I/O Register 2 bit 3
+                                 .equ	GPIOR24	= 4	; General Purpose I/O Register 2 bit 4
+                                 .equ	GPIOR25	= 5	; General Purpose I/O Register 2 bit 5
+                                 .equ	GPIOR26	= 6	; General Purpose I/O Register 2 bit 6
+                                 .equ	GPIOR27	= 7	; General Purpose I/O Register 2 bit 7
+                                 
+                                 ; GPIOR1 - General Purpose I/O Register 1
+                                 .equ	GPIOR10	= 0	; General Purpose I/O Register 1 bit 0
+                                 .equ	GPIOR11	= 1	; General Purpose I/O Register 1 bit 1
+                                 .equ	GPIOR12	= 2	; General Purpose I/O Register 1 bit 2
+                                 .equ	GPIOR13	= 3	; General Purpose I/O Register 1 bit 3
+                                 .equ	GPIOR14	= 4	; General Purpose I/O Register 1 bit 4
+                                 .equ	GPIOR15	= 5	; General Purpose I/O Register 1 bit 5
+                                 .equ	GPIOR16	= 6	; General Purpose I/O Register 1 bit 6
+                                 .equ	GPIOR17	= 7	; General Purpose I/O Register 1 bit 7
+                                 
+                                 ; GPIOR0 - General Purpose I/O Register 0
+                                 .equ	GPIOR00	= 0	; General Purpose I/O Register 0 bit 0
+                                 .equ	GPIOR01	= 1	; General Purpose I/O Register 0 bit 1
+                                 .equ	GPIOR02	= 2	; General Purpose I/O Register 0 bit 2
+                                 .equ	GPIOR03	= 3	; General Purpose I/O Register 0 bit 3
+                                 .equ	GPIOR04	= 4	; General Purpose I/O Register 0 bit 4
+                                 .equ	GPIOR05	= 5	; General Purpose I/O Register 0 bit 5
+                                 .equ	GPIOR06	= 6	; General Purpose I/O Register 0 bit 6
+                                 .equ	GPIOR07	= 7	; General Purpose I/O Register 0 bit 7
+                                 
+                                 ; PRR - Power reduction register
+                                 .equ	PRUSART	= 0	; 
+                                 .equ	PRUSI	= 1	; 
+                                 .equ	PRTIM0	= 2	; 
+                                 .equ	PRTIM1	= 3	; 
+                                 
+                                 ; BODCR - BOD control register
+                                 .equ	BPDSE	= 0	; 
+                                 .equ	BPDS	= 1	; 
+                                 
+                                 
+                                 
+                                 ; ***** LOCKSBITS ********************************************************
+                                 .equ	LB1	= 0	; Lockbit
+                                 .equ	LB2	= 1	; Lockbit
+                                 
+                                 
+                                 ; ***** FUSES ************************************************************
+                                 ; LOW fuse bits
+                                 .equ	CKSEL0	= 0	; Select Clock Source
+                                 .equ	CKSEL1	= 1	; Select Clock Source
+                                 .equ	CKSEL2	= 2	; Select Clock Source
+                                 .equ	CKSEL3	= 3	; Select Clock Source
+                                 .equ	SUT0	= 4	; Select start-up time
+                                 .equ	SUT1	= 5	; Select start-up time
+                                 .equ	CKOUT	= 6	; Clock output
+                                 .equ	CKDIV8	= 7	; Divide clock by 8
+                                 
+                                 ; HIGH fuse bits
+                                 .equ	BODLEVEL0	= 0	; Brown-out Detector trigger level
+                                 .equ	BODLEVEL1	= 1	; Brown-out Detector trigger level
+                                 .equ	BODLEVEL2	= 2	; Brown-out Detector trigger level
+                                 .equ	EESAVE	= 3	; EEPROM memory is preserved through chip erase
+                                 .equ	WDTON	= 4	; Watchdog Timer Always On
+                                 .equ	SPIEN	= 5	; Enable Serial programming and Data Downloading
+                                 .equ	DWEN	= 6	; debugWIRE Enable
+                                 .equ	RSTDISBL	= 7	; External reset disable
+                                 
+                                 ; EXTENDED fuse bits
+                                 .equ	SELFPRGEN	= 0	; Self Programming Enable
+                                 
+                                 
+                                 
+                                 ; ***** CPU REGISTER DEFINITIONS *****************************************
+                                 .def	XH	= r27
+                                 .def	XL	= r26
+                                 .def	YH	= r29
+                                 .def	YL	= r28
+                                 .def	ZH	= r31
+                                 .def	ZL	= r30
+                                 
+                                 
+                                 
+                                 ; ***** DATA MEMORY DECLARATIONS *****************************************
+                                 .equ	FLASHEND	= 0x03ff	; Note: Word address
+                                 .equ	IOEND	= 0x003f
+                                 .equ	SRAM_START	= 0x0060
+                                 .equ	SRAM_SIZE	= 128
+                                 .equ	RAMEND	= 0x00df
+                                 .equ	XRAMEND	= 0x0000
+                                 .equ	E2END	= 0x007f
+                                 .equ	EEPROMEND	= 0x007f
+                                 .equ	EEADRBITS	= 7
+                                 #pragma AVRPART MEMORY PROG_FLASH 2048
+                                 #pragma AVRPART MEMORY EEPROM 128
+                                 #pragma AVRPART MEMORY INT_SRAM SIZE 128
+                                 #pragma AVRPART MEMORY INT_SRAM START_ADDR 0x60
+                                 
+                                 
+                                 
+                                 ; ***** BOOTLOADER DECLARATIONS ******************************************
+                                 .equ	NRWW_START_ADDR	= 0x0
+                                 .equ	NRWW_STOP_ADDR	= 0x3ff
+                                 .equ	RWW_START_ADDR	= 0x0
+                                 .equ	RWW_STOP_ADDR	= 0x0
+                                 .equ	PAGESIZE	= 16
+                                 
+                                 
+                                 
+                                 ; ***** INTERRUPT VECTORS ************************************************
+                                 .equ	INT0addr	= 0x0001	; External Interrupt Request 0
+                                 .equ	INT1addr	= 0x0002	; External Interrupt Request 1
+                                 .equ	ICP1addr	= 0x0003	; Timer/Counter1 Capture Event
+                                 .equ	OC1Aaddr	= 0x0004	; Timer/Counter1 Compare Match A
+                                 .equ	OC1addr	= 0x0004	; For compatibility
+                                 .equ	OVF1addr	= 0x0005	; Timer/Counter1 Overflow
+                                 .equ	OVF0addr	= 0x0006	; Timer/Counter0 Overflow
+                                 .equ	URXCaddr	= 0x0007	; USART, Rx Complete
+                                 .equ	URXC0addr	= 0x0007	; For compatibility
+                                 .equ	UDREaddr	= 0x0008	; USART Data Register Empty
+                                 .equ	UDRE0addr	= 0x0008	; For compatibility
+                                 .equ	UTXCaddr	= 0x0009	; USART, Tx Complete
+                                 .equ	UTXC0addr	= 0x0009	; For compatibility
+                                 .equ	ACIaddr	= 0x000a	; Analog Comparator
+                                 .equ	PCIBaddr	= 0x000b	; Pin Change Interrupt Request B
+                                 .equ	PCIaddr	= 0x000b	; For compatibility
+                                 .equ	OC1Baddr	= 0x000c	; 
+                                 .equ	OC0Aaddr	= 0x000d	; 
+                                 .equ	OC0Baddr	= 0x000e	; 
+                                 .equ	USI_STARTaddr	= 0x000f	; USI Start Condition
+                                 .equ	USI_OVFaddr	= 0x0010	; USI Overflow
+                                 .equ	ERDYaddr	= 0x0011	; 
+                                 .equ	WDTaddr	= 0x0012	; Watchdog Timer Overflow
+                                 .equ	PCIAaddr	= 0x0013	; Pin Change Interrupt Request A
+                                 .equ	PCIDaddr	= 0x0014	; Pin Change Interrupt Request D
+                                 
+                                 .equ	INT_VECTORS_SIZE	= 21	; size in words
+                                 
+                                 #endif  /* _TN2313ADEF_INC_ */
+                                 
+                                 ; ***** END OF FILE ******************************************************
+                                 .LIST
+                                 
+                                 .DEF TEMP_REG_A           = r16               ; Temp register A
+                                 .DEF TEMP_REG_B           = r17               ; Temp register B
+                                 .DEF DATA                 = r20               ; DATA to transmit
+                                 
+                                 ;========================================;
+                                 ;                LABELS                  ;
+                                 ;========================================;
+                                 
+                                 .EQU USI_LATCH_PIN              = PB0         ; ST_CP on 74HC595
+                                 .EQU USI_DO_PIN                 = PB6         ; DS on 74HC595
+                                 .EQU USI_CLK_PIN                = PB7         ; SH_CP on 74HC595
+                                 
+                                 ;========================================;
+                                 ;              CODE SEGMENT              ;
+                                 ;========================================;
+                                 
+                                 .CSEG
+                                 .ORG 0x00
+                                 
+                                 ;========================================;
+                                 ;                VECTORS                 ;
+                                 ;========================================;
+                                 
+000000 c000                      rjmp 	RESET_vect			      ; Program start at RESET vector
+                                 
+                                 RESET_vect:
+                                   ;========================================;
+                                   ;        INITIALIZE STACK POINTER        ;
+                                   ;========================================;
+                                 
+000001 ed0f                        ldi       TEMP_REG_A, low(RAMEND)
+000002 bf0d                        out       SPL, TEMP_REG_A
+                                 
+                                 MCU_INIT:
+000003 d006                        rcall     INIT_PORTS
+000004 e041                        ldi       DATA, 0b00000001
+000005 c000                        rjmp      LOOP
+                                 
+                                 ;========================================;
+                                 ;            MAIN PROGRAM LOOP           ;
+                                 ;========================================;
+                                 
+                                 LOOP:
+000006 d006                        rcall     USI_TRANSMIT
+000007 1f44                        rol       DATA
+000008 d00f                        rcall     DELAY
+000009 cffc                        rjmp      LOOP
+                                 
+                                 INIT_PORTS:
+00000a ec01                        ldi       r16, (1<<USI_CLK_PIN) | (1<<USI_DO_PIN) | (1<<USI_LATCH_PIN)
+00000b bb07                        out       DDRB, r16
+00000c 9508                      ret
+                                 ;========================================;
+                                 ;          SEND BYTE TO 74HC595          ;
+                                 ;========================================;
+                                 
+                                 USI_TRANSMIT:
+                                   ; Move the value stored in DATA into the R19 register
+00000d 2f34                        mov       r19, DATA
+00000e b93f                        out       USIDR, r19
+                                 
+                                   ; Enable the USI Overflow Interrupt Flag (will be 0 if transfer is not completed)
+00000f e430                        ldi       r19, (1<<USIOIF)      
+000010 b93e                        out       USISR, r19
+                                   
+                                   ; Load the USI settings into a temp register to set up the USI for Three-wire mode
+                                   ; with software clock strobe (USITC) and external positive edge toggle of USCK
+                                   ;
+                                   ; USIWM0 <--------------> USI Wire Mode
+                                   ; USICS1 <--------------> USI Clock Source Select
+                                   ; USICLK <--------------> USI Clock Strobe
+                                   ; USITC  <--------------> USI Toggle Clock (Enable clock generation)      
+000011 e10b                        ldi       TEMP_REG_A, (1<<USIWM0) | (1<<USICS1) | (1<<USICLK) | (1<<USITC)
+                                   
+                                   _USI_TRANSMIT_LOOP:             ; Execute the loop until the transfer is completed (USIOIF is 0)
+000012 b90d                          out       USICR, TEMP_REG_A   ; Load the settings from the temp register into the USI Control Register
+000013 9b76                          sbis      USISR, USIOIF       ; Check if transfer is completed and exit loop if it is
+000014 cffd                          rjmp      _USI_TRANSMIT_LOOP
+                                 
+                                   ; Send a pulse to the LATCH pin to copy the byte from the 74hc595 shift register 
+                                   ; to the storage register
+000015 9ac0                        sbi      PORTB, USI_LATCH_PIN
+000016 98c0                        cbi      PORTB, USI_LATCH_PIN
+000017 9508                      ret
+                                 
+                                 DELAY:
+000018 930f                        push      TEMP_REG_A
+000019 e406                        ldi       TEMP_REG_A, 70
+                                   _DELAY_1:
+00001a ef1f                          ldi     TEMP_REG_B, 255   
+                                   _DELAY_2:
+00001b 951a                          dec     TEMP_REG_B         
+00001c 0000                          nop                 
+00001d 0000                          nop                
+00001e 0000                          nop                 
+00001f f7d9                          brne    _DELAY_2    
+000020 950a                          dec     TEMP_REG_A
+000021 f7c1                          brne    _DELAY_1
+000022 910f                        pop       TEMP_REG_A    
+
+
+RESOURCE USE INFORMATION
+------------------------
+
+Notice:
+The register and instruction counts are symbol table hit counts,
+and hence implicitly used resources are not counted, eg, the
+'lpm' instruction without operands implicitly uses r0 and z,
+none of which are counted.
+
+x,y,z are separate entities in the symbol table and are
+counted separately from r26..r31 here.
+
+.dseg memory usage only counts static data declared with .byte
+
+"ATtiny2313A" register use summary:
+x  :   0 y  :   0 z  :   0 r0 :   0 r1 :   0 r2 :   0 r3 :   0 r4 :   0 
+r5 :   0 r6 :   0 r7 :   0 r8 :   0 r9 :   0 r10:   0 r11:   0 r12:   0 
+r13:   0 r14:   0 r15:   0 r16:  10 r17:   2 r18:   0 r19:   4 r20:   3 
+r21:   0 r22:   0 r23:   0 r24:   0 r25:   0 r26:   0 r27:   0 r28:   0 
+r29:   0 r30:   0 r31:   0 
+Registers used: 4 out of 35 (11.4%)
+
+"ATtiny2313A" instruction use summary:
+.lds  :   0 .sts  :   0 adc   :   0 add   :   0 adiw  :   0 and   :   0 
+andi  :   0 asr   :   0 bclr  :   0 bld   :   0 brbc  :   0 brbs  :   0 
+brcc  :   0 brcs  :   0 break :   0 breq  :   0 brge  :   0 brhc  :   0 
+brhs  :   0 brid  :   0 brie  :   0 brlo  :   0 brlt  :   0 brmi  :   0 
+brne  :   2 brpl  :   0 brsh  :   0 brtc  :   0 brts  :   0 brvc  :   0 
+brvs  :   0 bset  :   0 bst   :   0 cbi   :   1 cbr   :   0 clc   :   0 
+clh   :   0 cli   :   0 cln   :   0 clr   :   0 cls   :   0 clt   :   0 
+clv   :   0 clz   :   0 com   :   0 cp    :   0 cpc   :   0 cpi   :   0 
+cpse  :   0 dec   :   2 eor   :   0 icall :   0 ijmp  :   0 in    :   0 
+inc   :   0 ld    :   0 ldd   :   0 ldi   :   7 lds   :   0 lpm   :   0 
+lsl   :   0 lsr   :   0 mov   :   1 movw  :   0 neg   :   0 nop   :   3 
+or    :   0 ori   :   0 out   :   5 pop   :   1 push  :   1 rcall :   3 
+ret   :   3 reti  :   0 rjmp  :   4 rol   :   1 ror   :   0 sbc   :   0 
+sbci  :   0 sbi   :   1 sbic  :   0 sbis  :   1 sbiw  :   0 sbr   :   0 
+sbrc  :   0 sbrs  :   0 sec   :   0 seh   :   0 sei   :   0 sen   :   0 
+ser   :   0 ses   :   0 set   :   0 sev   :   0 sez   :   0 sleep :   0 
+spm   :   0 st    :   0 std   :   0 sts   :   0 sub   :   0 subi  :   0 
+swap  :   0 tst   :   0 wdr   :   0 
+Instructions used: 15 out of 105 (14.3%)
+
+"ATtiny2313A" memory use summary [bytes]:
+Segment   Begin    End      Code   Data   Used    Size   Use%
+---------------------------------------------------------------
+[.cseg] 0x000000 0x000048     72      0     72    2048   3.5%
+[.dseg] 0x000060 0x000060      0      0      0     128   0.0%
+[.eseg] 0x000000 0x000000      0      0      0     128   0.0%
+
+Assembly complete, 0 errors, 0 warnings
diff --git a/simulation.gif b/simulation.gif
new file mode 100644
index 0000000..3b66786
Binary files /dev/null and b/simulation.gif differ
diff --git a/tn2313Adef.inc b/tn2313Adef.inc
new file mode 100644
index 0000000..c159ba1
--- /dev/null
+++ b/tn2313Adef.inc
@@ -0,0 +1,698 @@
+;***** THIS IS A MACHINE GENERATED FILE - DO NOT EDIT ********************
+;***** Created: 2011-02-09 12:04 ******* Source: ATtiny2313A.xml *********
+;*************************************************************************
+;* A P P L I C A T I O N   N O T E   F O R   T H E   A V R   F A M I L Y
+;* 
+;* Number            : AVR000
+;* File Name         : "tn2313Adef.inc"
+;* Title             : Register/Bit Definitions for the ATtiny2313A
+;* Date              : 2011-02-09
+;* Version           : 2.35
+;* Support E-mail    : avr@atmel.com
+;* Target MCU        : ATtiny2313A
+;* 
+;* DESCRIPTION
+;* When including this file in the assembly program file, all I/O register 
+;* names and I/O register bit names appearing in the data book can be used.
+;* In addition, the six registers forming the three data pointers X, Y and 
+;* Z have been assigned names XL - ZH. Highest RAM address for Internal 
+;* SRAM is also defined 
+;* 
+;* The Register names are represented by their hexadecimal address.
+;* 
+;* The Register Bit names are represented by their bit number (0-7).
+;* 
+;* Please observe the difference in using the bit names with instructions
+;* such as "sbr"/"cbr" (set/clear bit in register) and "sbrs"/"sbrc"
+;* (skip if bit in register set/cleared). The following example illustrates
+;* this:
+;* 
+;* in    r16,PORTB             ;read PORTB latch
+;* sbr   r16,(1<<PB6)+(1<<PB5) ;set PB6 and PB5 (use masks, not bit#)
+;* out   PORTB,r16             ;output to PORTB
+;* 
+;* in    r16,TIFR              ;read the Timer Interrupt Flag Register
+;* sbrc  r16,TOV0              ;test the overflow flag (use bit#)
+;* rjmp  TOV0_is_set           ;jump if set
+;* ...                         ;otherwise do something else
+;*************************************************************************
+
+#ifndef _TN2313ADEF_INC_
+#define _TN2313ADEF_INC_
+
+
+#pragma partinc 0
+
+; ***** SPECIFY DEVICE ***************************************************
+.device ATtiny2313A
+#pragma AVRPART ADMIN PART_NAME ATtiny2313A
+.equ	SIGNATURE_000	= 0x1e
+.equ	SIGNATURE_001	= 0x91
+.equ	SIGNATURE_002	= 0x0a
+
+#pragma AVRPART CORE CORE_VERSION V2
+#pragma AVRPART CORE NEW_INSTRUCTIONS lpm rd,z+
+
+
+; ***** I/O REGISTER DEFINITIONS *****************************************
+; NOTE:
+; Definitions marked "MEMORY MAPPED"are extended I/O ports
+; and cannot be used with IN/OUT instructions
+.equ	SREG	= 0x3f
+.equ	SPL	= 0x3d
+.equ	OCR0B	= 0x3c
+.equ	GIMSK	= 0x3b
+.equ	EIFR	= 0x3a
+.equ	TIMSK	= 0x39
+.equ	TIFR	= 0x38
+.equ	SPMCSR	= 0x37
+.equ	OCR0A	= 0x36
+.equ	MCUCR	= 0x35
+.equ	MCUSR	= 0x34
+.equ	TCCR0B	= 0x33
+.equ	TCNT0	= 0x32
+.equ	OSCCAL	= 0x31
+.equ	TCCR0A	= 0x30
+.equ	TCCR1A	= 0x2f
+.equ	TCCR1B	= 0x2e
+.equ	TCNT1L	= 0x2c
+.equ	TCNT1H	= 0x2d
+.equ	OCR1AL	= 0x2a
+.equ	OCR1AH	= 0x2b
+.equ	OCR1BL	= 0x28
+.equ	OCR1BH	= 0x29
+.equ	CLKPR	= 0x26
+.equ	ICR1L	= 0x24
+.equ	ICR1H	= 0x25
+.equ	GTCCR	= 0x23
+.equ	TCCR1C	= 0x22
+.equ	WDTCR	= 0x21
+.equ	PCMSK0	= 0x20
+.equ	EEAR	= 0x1e
+.equ	EEDR	= 0x1d
+.equ	EECR	= 0x1c
+.equ	PORTA	= 0x1b
+.equ	DDRA	= 0x1a
+.equ	PINA	= 0x19
+.equ	PORTB	= 0x18
+.equ	DDRB	= 0x17
+.equ	PINB	= 0x16
+.equ	GPIOR2	= 0x15
+.equ	GPIOR1	= 0x14
+.equ	GPIOR0	= 0x13
+.equ	PORTD	= 0x12
+.equ	DDRD	= 0x11
+.equ	PIND	= 0x10
+.equ	USIDR	= 0x0f
+.equ	USISR	= 0x0e
+.equ	USICR	= 0x0d
+.equ	UDR	= 0x0c
+.equ	UCSRA	= 0x0b
+.equ	UCSRB	= 0x0a
+.equ	UBRRL	= 0x09
+.equ	ACSR	= 0x08
+.equ	BODCR	= 0x07
+.equ	PRR	= 0x06
+.equ	PCMSK2	= 0x05
+.equ	PCMSK1	= 0x04
+.equ	UCSRC	= 0x03
+.equ	UBRRH	= 0x02
+.equ	DIDR	= 0x01
+
+
+; ***** BIT DEFINITIONS **************************************************
+
+; ***** PORTB ************************
+; PORTB - Port B Data Register
+.equ	PORTB0	= 0	; Port B Data Register bit 0
+.equ	PB0	= 0	; For compatibility
+.equ	PORTB1	= 1	; Port B Data Register bit 1
+.equ	PB1	= 1	; For compatibility
+.equ	PORTB2	= 2	; Port B Data Register bit 2
+.equ	PB2	= 2	; For compatibility
+.equ	PORTB3	= 3	; Port B Data Register bit 3
+.equ	PB3	= 3	; For compatibility
+.equ	PORTB4	= 4	; Port B Data Register bit 4
+.equ	PB4	= 4	; For compatibility
+.equ	PORTB5	= 5	; Port B Data Register bit 5
+.equ	PB5	= 5	; For compatibility
+.equ	PORTB6	= 6	; Port B Data Register bit 6
+.equ	PB6	= 6	; For compatibility
+.equ	PORTB7	= 7	; Port B Data Register bit 7
+.equ	PB7	= 7	; For compatibility
+
+; DDRB - Port B Data Direction Register
+.equ	DDB0	= 0	; Port B Data Direction Register bit 0
+.equ	DDB1	= 1	; Port B Data Direction Register bit 1
+.equ	DDB2	= 2	; Port B Data Direction Register bit 2
+.equ	DDB3	= 3	; Port B Data Direction Register bit 3
+.equ	DDB4	= 4	; Port B Data Direction Register bit 4
+.equ	DDB5	= 5	; Port B Data Direction Register bit 5
+.equ	DDB6	= 6	; Port B Data Direction Register bit 6
+.equ	DDB7	= 7	; Port B Data Direction Register bit 7
+
+; PINB - Port B Input Pins
+.equ	PINB0	= 0	; Port B Input Pins bit 0
+.equ	PINB1	= 1	; Port B Input Pins bit 1
+.equ	PINB2	= 2	; Port B Input Pins bit 2
+.equ	PINB3	= 3	; Port B Input Pins bit 3
+.equ	PINB4	= 4	; Port B Input Pins bit 4
+.equ	PINB5	= 5	; Port B Input Pins bit 5
+.equ	PINB6	= 6	; Port B Input Pins bit 6
+.equ	PINB7	= 7	; Port B Input Pins bit 7
+
+
+; ***** TIMER_COUNTER_0 **************
+; TIMSK - Timer/Counter Interrupt Mask Register
+.equ	OCIE0A	= 0	; Timer/Counter0 Output Compare Match A Interrupt Enable
+.equ	TOIE0	= 1	; Timer/Counter0 Overflow Interrupt Enable
+.equ	OCIE0B	= 2	; Timer/Counter0 Output Compare Match B Interrupt Enable
+
+; TIFR - Timer/Counter Interrupt Flag register
+.equ	OCF0A	= 0	; Timer/Counter0 Output Compare Flag 0A
+.equ	TOV0	= 1	; Timer/Counter0 Overflow Flag
+.equ	OCF0B	= 2	; Timer/Counter0 Output Compare Flag 0B
+
+; OCR0B - Timer/Counter0 Output Compare Register
+.equ	OCR0_0	= 0	; 
+.equ	OCR0_1	= 1	; 
+.equ	OCR0_2	= 2	; 
+.equ	OCR0_3	= 3	; 
+.equ	OCR0_4	= 4	; 
+.equ	OCR0_5	= 5	; 
+.equ	OCR0_6	= 6	; 
+.equ	OCR0_7	= 7	; 
+
+; OCR0A - Timer/Counter0 Output Compare Register
+.equ	OCR0A_0	= 0	; 
+.equ	OCR0A_1	= 1	; 
+.equ	OCR0A_2	= 2	; 
+.equ	OCR0A_3	= 3	; 
+.equ	OCR0A_4	= 4	; 
+.equ	OCR0A_5	= 5	; 
+.equ	OCR0A_6	= 6	; 
+.equ	OCR0A_7	= 7	; 
+
+; TCCR0A - Timer/Counter  Control Register A
+.equ	WGM00	= 0	; Waveform Generation Mode
+.equ	WGM01	= 1	; Waveform Generation Mode
+.equ	COM0B0	= 4	; Compare Match Output B Mode
+.equ	COM0B1	= 5	; Compare Match Output B Mode
+.equ	COM0A0	= 6	; Compare Match Output A Mode
+.equ	COM0A1	= 7	; Compare Match Output A Mode
+
+; TCNT0 - Timer/Counter0
+.equ	TCNT0_0	= 0	; 
+.equ	TCNT0_1	= 1	; 
+.equ	TCNT0_2	= 2	; 
+.equ	TCNT0_3	= 3	; 
+.equ	TCNT0_4	= 4	; 
+.equ	TCNT0_5	= 5	; 
+.equ	TCNT0_6	= 6	; 
+.equ	TCNT0_7	= 7	; 
+
+; TCCR0B - Timer/Counter Control Register B
+.equ	TCCR0	= TCCR0B	; For compatibility
+.equ	CS00	= 0	; Clock Select
+.equ	CS01	= 1	; Clock Select
+.equ	CS02	= 2	; Clock Select
+.equ	WGM02	= 3	; 
+.equ	FOC0B	= 6	; Force Output Compare B
+.equ	FOC0A	= 7	; Force Output Compare B
+
+
+; ***** TIMER_COUNTER_1 **************
+; TIMSK - Timer/Counter Interrupt Mask Register
+.equ	ICIE1	= 3	; Timer/Counter1 Input Capture Interrupt Enable
+.equ	TICIE	= ICIE1	; For compatibility
+.equ	OCIE1B	= 5	; Timer/Counter1 Output CompareB Match Interrupt Enable
+.equ	OCIE1A	= 6	; Timer/Counter1 Output CompareA Match Interrupt Enable
+.equ	TOIE1	= 7	; Timer/Counter1 Overflow Interrupt Enable
+
+; TIFR - Timer/Counter Interrupt Flag register
+.equ	ICF1	= 3	; Input Capture Flag 1
+.equ	OCF1B	= 5	; Output Compare Flag 1B
+.equ	OCF1A	= 6	; Output Compare Flag 1A
+.equ	TOV1	= 7	; Timer/Counter1 Overflow Flag
+
+; TCCR1A - Timer/Counter1 Control Register A
+.equ	WGM10	= 0	; Pulse Width Modulator Select Bit 0
+.equ	PWM10	= WGM10	; For compatibility
+.equ	WGM11	= 1	; Pulse Width Modulator Select Bit 1
+.equ	PWM11	= WGM11	; For compatibility
+.equ	COM1B0	= 4	; Comparet Ouput Mode 1B, bit 0
+.equ	COM1B1	= 5	; Compare Output Mode 1B, bit 1
+.equ	COM1A0	= 6	; Comparet Ouput Mode 1A, bit 0
+.equ	COM1A1	= 7	; Compare Output Mode 1A, bit 1
+
+; TCCR1B - Timer/Counter1 Control Register B
+.equ	CS10	= 0	; Clock Select bit 0
+.equ	CS11	= 1	; Clock Select 1 bit 1
+.equ	CS12	= 2	; Clock Select1 bit 2
+.equ	WGM12	= 3	; Waveform Generation Mode Bit 2
+.equ	CTC1	= WGM12	; For compatibility
+.equ	WGM13	= 4	; Waveform Generation Mode Bit 3
+.equ	ICES1	= 6	; Input Capture 1 Edge Select
+.equ	ICNC1	= 7	; Input Capture 1 Noise Canceler
+
+; TCCR1C - Timer/Counter1 Control Register C
+.equ	FOC1B	= 6	; Force Output Compare for Channel B
+.equ	FOC1A	= 7	; Force Output Compare for Channel A
+
+
+; ***** WATCHDOG *********************
+; WDTCR - Watchdog Timer Control Register
+.equ	WDTCSR	= WDTCR	; For compatibility
+.equ	WDP0	= 0	; Watch Dog Timer Prescaler bit 0
+.equ	WDP1	= 1	; Watch Dog Timer Prescaler bit 1
+.equ	WDP2	= 2	; Watch Dog Timer Prescaler bit 2
+.equ	WDE	= 3	; Watch Dog Enable
+.equ	WDCE	= 4	; Watchdog Change Enable
+.equ	WDTOE	= WDCE	; For compatibility
+.equ	WDP3	= 5	; Watchdog Timer Prescaler Bit 3
+.equ	WDIE	= 6	; Watchdog Timeout Interrupt Enable
+.equ	WDIF	= 7	; Watchdog Timeout Interrupt Flag
+
+
+; ***** USART ************************
+; UDR - USART I/O Data Register
+.equ	UDR0	= 0	; USART I/O Data Register bit 0
+.equ	UDR1	= 1	; USART I/O Data Register bit 1
+.equ	UDR2	= 2	; USART I/O Data Register bit 2
+.equ	UDR3	= 3	; USART I/O Data Register bit 3
+.equ	UDR4	= 4	; USART I/O Data Register bit 4
+.equ	UDR5	= 5	; USART I/O Data Register bit 5
+.equ	UDR6	= 6	; USART I/O Data Register bit 6
+.equ	UDR7	= 7	; USART I/O Data Register bit 7
+
+; UCSRA - USART Control and Status Register A
+.equ	USR	= UCSRA	; For compatibility
+.equ	MPCM	= 0	; Multi-processor Communication Mode
+.equ	U2X	= 1	; Double the USART Transmission Speed
+.equ	UPE	= 2	; USART Parity Error
+.equ	PE	= UPE	; For compatibility
+.equ	DOR	= 3	; Data overRun
+.equ	FE	= 4	; Framing Error
+.equ	UDRE	= 5	; USART Data Register Empty
+.equ	TXC	= 6	; USART Transmitt Complete
+.equ	RXC	= 7	; USART Receive Complete
+
+; UCSRB - USART Control and Status Register B
+.equ	UCR	= UCSRB	; For compatibility
+.equ	TXB8	= 0	; Transmit Data Bit 8
+.equ	RXB8	= 1	; Receive Data Bit 8
+.equ	UCSZ2	= 2	; Character Size
+.equ	CHR9	= UCSZ2	; For compatibility
+.equ	TXEN	= 3	; Transmitter Enable
+.equ	RXEN	= 4	; Receiver Enable
+.equ	UDRIE	= 5	; USART Data register Empty Interrupt Enable
+.equ	TXCIE	= 6	; TX Complete Interrupt Enable
+.equ	RXCIE	= 7	; RX Complete Interrupt Enable
+
+; UCSRC - USART Control and Status Register C
+.equ	UCPOL	= 0	; Clock Polarity
+.equ	UCSZ0	= 1	; Character Size Bit 0
+.equ	UCSZ1	= 2	; Character Size Bit 1
+.equ	USBS	= 3	; Stop Bit Select
+.equ	UPM0	= 4	; Parity Mode Bit 0
+.equ	UPM1	= 5	; Parity Mode Bit 1
+.equ	UMSEL0 	= 6	; USART Mode Select 0
+.equ 	UMSEL1 	= 7 ; USART Mode Select 1
+.equ 	UCPHA  	= 1 ; USART MSPIM Clock Phase
+.equ 	UDORD  	= 2 ; USART MSPIM Data Order 
+
+.equ	UBRR	= UBRRL	; For compatibility
+
+; ***** ANALOG_COMPARATOR ************
+; ACSR - Analog Comparator Control And Status Register
+.equ	ACIS0	= 0	; Analog Comparator Interrupt Mode Select bit 0
+.equ	ACIS1	= 1	; Analog Comparator Interrupt Mode Select bit 1
+.equ	ACIC	= 2	; 
+.equ	ACIE	= 3	; Analog Comparator Interrupt Enable
+.equ	ACI	= 4	; Analog Comparator Interrupt Flag
+.equ	ACO	= 5	; Analog Compare Output
+.equ	ACBG	= 6	; Analog Comparator Bandgap Select
+.equ	ACD	= 7	; Analog Comparator Disable
+
+; DIDR - Digital Input Disable Register 1
+.equ	AIN0D	= 0	; AIN0 Digital Input Disable
+.equ	AIN1D	= 1	; AIN1 Digital Input Disable
+
+
+; ***** PORTD ************************
+; PORTD - Data Register, Port D
+.equ	PORTD0	= 0	; 
+.equ	PD0	= 0	; For compatibility
+.equ	PORTD1	= 1	; 
+.equ	PD1	= 1	; For compatibility
+.equ	PORTD2	= 2	; 
+.equ	PD2	= 2	; For compatibility
+.equ	PORTD3	= 3	; 
+.equ	PD3	= 3	; For compatibility
+.equ	PORTD4	= 4	; 
+.equ	PD4	= 4	; For compatibility
+.equ	PORTD5	= 5	; 
+.equ	PD5	= 5	; For compatibility
+.equ	PORTD6	= 6	; 
+.equ	PD6	= 6	; For compatibility
+
+; DDRD - Data Direction Register, Port D
+.equ	DDD0	= 0	; 
+.equ	DDD1	= 1	; 
+.equ	DDD2	= 2	; 
+.equ	DDD3	= 3	; 
+.equ	DDD4	= 4	; 
+.equ	DDD5	= 5	; 
+.equ	DDD6	= 6	; 
+
+; PIND - Input Pins, Port D
+.equ	PIND0	= 0	; 
+.equ	PIND1	= 1	; 
+.equ	PIND2	= 2	; 
+.equ	PIND3	= 3	; 
+.equ	PIND4	= 4	; 
+.equ	PIND5	= 5	; 
+.equ	PIND6	= 6	; 
+
+
+; ***** EEPROM ***********************
+; EEAR - EEPROM Read/Write Access
+.equ	EEARL	= EEAR	; For compatibility
+.equ	EEAR0	= 0	; EEPROM Read/Write Access bit 0
+.equ	EEAR1	= 1	; EEPROM Read/Write Access bit 1
+.equ	EEAR2	= 2	; EEPROM Read/Write Access bit 2
+.equ	EEAR3	= 3	; EEPROM Read/Write Access bit 3
+.equ	EEAR4	= 4	; EEPROM Read/Write Access bit 4
+.equ	EEAR5	= 5	; EEPROM Read/Write Access bit 5
+.equ	EEAR6	= 6	; EEPROM Read/Write Access bit 6
+
+; EEDR - EEPROM Data Register
+.equ	EEDR0	= 0	; EEPROM Data Register bit 0
+.equ	EEDR1	= 1	; EEPROM Data Register bit 1
+.equ	EEDR2	= 2	; EEPROM Data Register bit 2
+.equ	EEDR3	= 3	; EEPROM Data Register bit 3
+.equ	EEDR4	= 4	; EEPROM Data Register bit 4
+.equ	EEDR5	= 5	; EEPROM Data Register bit 5
+.equ	EEDR6	= 6	; EEPROM Data Register bit 6
+.equ	EEDR7	= 7	; EEPROM Data Register bit 7
+
+; EECR - EEPROM Control Register
+.equ	EERE	= 0	; EEPROM Read Enable
+.equ	EEPE	= 1	; EEPROM Write Enable
+.equ	EEWE	= EEPE	; For compatibility
+.equ	EEMPE	= 2	; EEPROM Master Write Enable
+.equ	EEMWE	= EEMPE	; For compatibility
+.equ	EERIE	= 3	; EEProm Ready Interrupt Enable
+.equ	EEPM0	= 4	; 
+.equ	EEPM1	= 5	; 
+
+
+; ***** PORTA ************************
+; PORTA - Port A Data Register
+.equ	PORTA0	= 0	; Port A Data Register bit 0
+.equ	PA0	= 0	; For compatibility
+.equ	PORTA1	= 1	; Port A Data Register bit 1
+.equ	PA1	= 1	; For compatibility
+.equ	PORTA2	= 2	; Port A Data Register bit 2
+.equ	PA2	= 2	; For compatibility
+
+; DDRA - Port A Data Direction Register
+.equ	DDA0	= 0	; Data Direction Register, Port A, bit 0
+.equ	DDA1	= 1	; Data Direction Register, Port A, bit 1
+.equ	DDA2	= 2	; Data Direction Register, Port A, bit 2
+
+; PINA - Port A Input Pins
+.equ	PINA0	= 0	; Input Pins, Port A bit 0
+.equ	PINA1	= 1	; Input Pins, Port A bit 1
+.equ	PINA2	= 2	; Input Pins, Port A bit 2
+
+
+; ***** USI **************************
+; USIDR - USI Data Register
+.equ	USIDR0	= 0	; USI Data Register bit 0
+.equ	USIDR1	= 1	; USI Data Register bit 1
+.equ	USIDR2	= 2	; USI Data Register bit 2
+.equ	USIDR3	= 3	; USI Data Register bit 3
+.equ	USIDR4	= 4	; USI Data Register bit 4
+.equ	USIDR5	= 5	; USI Data Register bit 5
+.equ	USIDR6	= 6	; USI Data Register bit 6
+.equ	USIDR7	= 7	; USI Data Register bit 7
+
+; USISR - USI Status Register
+.equ	USICNT0	= 0	; USI Counter Value Bit 0
+.equ	USICNT1	= 1	; USI Counter Value Bit 1
+.equ	USICNT2	= 2	; USI Counter Value Bit 2
+.equ	USICNT3	= 3	; USI Counter Value Bit 3
+.equ	USIDC	= 4	; Data Output Collision
+.equ	USIPF	= 5	; Stop Condition Flag
+.equ	USIOIF	= 6	; Counter Overflow Interrupt Flag
+.equ	USISIF	= 7	; Start Condition Interrupt Flag
+
+; USICR - USI Control Register
+.equ	USITC	= 0	; Toggle Clock Port Pin
+.equ	USICLK	= 1	; Clock Strobe
+.equ	USICS0	= 2	; USI Clock Source Select Bit 0
+.equ	USICS1	= 3	; USI Clock Source Select Bit 1
+.equ	USIWM0	= 4	; USI Wire Mode Bit 0
+.equ	USIWM1	= 5	; USI Wire Mode Bit 1
+.equ	USIOIE	= 6	; Counter Overflow Interrupt Enable
+.equ	USISIE	= 7	; Start Condition Interrupt Enable
+
+
+; ***** EXTERNAL_INTERRUPT ***********
+; GIMSK - General Interrupt Mask Register
+.equ  PCIE1 = 3 ;
+.equ  PCIE2 = 4 ;
+.equ	PCIE0	= 5	; 
+.equ	INT0	= 6	; External Interrupt Request 0 Enable
+.equ	INT1	= 7	; External Interrupt Request 1 Enable
+
+; EIFR - Extended Interrupt Flag Register
+.equ	GIFR	= EIFR	; For compatibility
+.equ	PCIF0	= 5	; 
+.equ  PCIF2	= 4   ;
+.equ  PCIF1   = 3   ;
+.equ	INTF0	= 6	; External Interrupt Flag 0
+.equ	INTF1	= 7	; External Interrupt Flag 1
+
+; PCMSK2 - Pin Change Interrupt Mask Register 2
+.equ	PCINT11	= 0	; Pin Change Interrupt Mask 11
+.equ	PCINT12	= 1	; Pin Change Interrupt Mask 12
+.equ	PCINT13	= 2	; Pin Change Interrupt Mask 13
+.equ	PCINT14	= 3	; Pin Change Interrupt Mask 14
+.equ	PCINT15	= 4	; Pin Change Interrupt Mask 15
+.equ	PCINT16	= 5	; Pin Change Interrupt Mask 16
+.equ	PCINT17	= 6	; Pin Change Interrupt Mask 17
+
+; PCMSK1 - Pin Change Interrupt Mask Register 1
+.equ	PCINT8	= 0	; Pin Change Interrupt Mask 8
+.equ	PCINT9	= 1	; Pin Change Interrupt Mask 9
+.equ	PCINT10	= 2	; Pin Change Interrupt Mask 10
+
+
+; ***** CPU **************************
+; SREG - Status Register
+.equ	SREG_C	= 0	; Carry Flag
+.equ	SREG_Z	= 1	; Zero Flag
+.equ	SREG_N	= 2	; Negative Flag
+.equ	SREG_V	= 3	; Two's Complement Overflow Flag
+.equ	SREG_S	= 4	; Sign Bit
+.equ	SREG_H	= 5	; Half Carry Flag
+.equ	SREG_T	= 6	; Bit Copy Storage
+.equ	SREG_I	= 7	; Global Interrupt Enable
+
+; SPMCSR - Store Program Memory Control and Status register
+.equ	SPMEN	= 0	; Store Program Memory Enable
+.equ	PGERS	= 1	; Page Erase
+.equ	PGWRT	= 2	; Page Write
+.equ	RFLB	= 3	; Read Fuse and Lock Bits
+.equ	CTPB	= 4	; Clear Temporary Page Buffer
+
+; MCUCR - MCU Control Register
+.equ	ISC00	= 0	; Interrupt Sense Control 0 bit 0
+.equ	ISC01	= 1	; Interrupt Sense Control 0 bit 1
+.equ	ISC10	= 2	; Interrupt Sense Control 1 bit 0
+.equ	ISC11	= 3	; Interrupt Sense Control 1 bit 1
+.equ	SM0	= 4	; Sleep Mode Select Bit 0
+.equ	SM	= SM0	; For compatibility
+.equ	SE	= 5	; Sleep Enable
+.equ	SM1	= 6	; Sleep Mode Select Bit 1
+.equ	PUD	= 7	; Pull-up Disable
+
+; CLKPR - Clock Prescale Register
+.equ	CLKPS0	= 0	; Clock Prescaler Select Bit 0
+.equ	CLKPS1	= 1	; Clock Prescaler Select Bit 1
+.equ	CLKPS2	= 2	; Clock Prescaler Select Bit 2
+.equ	CLKPS3	= 3	; Clock Prescaler Select Bit 3
+.equ	CLKPCE	= 7	; Clock Prescaler Change Enable
+
+; MCUSR - MCU Status register
+.equ	PORF	= 0	; Power-On Reset Flag
+.equ	EXTRF	= 1	; External Reset Flag
+.equ	BORF	= 2	; Brown-out Reset Flag
+.equ	WDRF	= 3	; Watchdog Reset Flag
+
+; OSCCAL - Oscillator Calibration Register
+.equ	CAL0	= 0	; Oscillatro Calibration Value Bit 0
+.equ	CAL1	= 1	; Oscillatro Calibration Value Bit 1
+.equ	CAL2	= 2	; Oscillatro Calibration Value Bit 2
+.equ	CAL3	= 3	; Oscillatro Calibration Value Bit 3
+.equ	CAL4	= 4	; Oscillatro Calibration Value Bit 4
+.equ	CAL5	= 5	; Oscillatro Calibration Value Bit 5
+.equ	CAL6	= 6	; Oscillatro Calibration Value Bit 6
+
+; GTCCR - General Timer Counter Control Register
+.equ	SFIOR	= GTCCR	; For compatibility
+.equ	PSR10	= 0	; 
+
+; PCMSK - Pin-Change Mask register
+.equ	PCINT0	= 0	; Pin-Change Interrupt 0
+.equ	PCINT1	= 1	; Pin-Change Interrupt 1
+.equ	PCINT2	= 2	; Pin-Change Interrupt 2
+.equ	PCINT3	= 3	; Pin-Change Interrupt 3
+.equ	PCINT4	= 4	; Pin-Change Interrupt 4
+.equ	PCINT5	= 5	; Pin-Change Interrupt 5
+.equ	PCINT6	= 6	; Pin-Change Interrupt 6
+.equ	PCINT7	= 7	; Pin-Change Interrupt 7
+
+; GPIOR2 - General Purpose I/O Register 2
+.equ	GPIOR20	= 0	; General Purpose I/O Register 2 bit 0
+.equ	GPIOR21	= 1	; General Purpose I/O Register 2 bit 1
+.equ	GPIOR22	= 2	; General Purpose I/O Register 2 bit 2
+.equ	GPIOR23	= 3	; General Purpose I/O Register 2 bit 3
+.equ	GPIOR24	= 4	; General Purpose I/O Register 2 bit 4
+.equ	GPIOR25	= 5	; General Purpose I/O Register 2 bit 5
+.equ	GPIOR26	= 6	; General Purpose I/O Register 2 bit 6
+.equ	GPIOR27	= 7	; General Purpose I/O Register 2 bit 7
+
+; GPIOR1 - General Purpose I/O Register 1
+.equ	GPIOR10	= 0	; General Purpose I/O Register 1 bit 0
+.equ	GPIOR11	= 1	; General Purpose I/O Register 1 bit 1
+.equ	GPIOR12	= 2	; General Purpose I/O Register 1 bit 2
+.equ	GPIOR13	= 3	; General Purpose I/O Register 1 bit 3
+.equ	GPIOR14	= 4	; General Purpose I/O Register 1 bit 4
+.equ	GPIOR15	= 5	; General Purpose I/O Register 1 bit 5
+.equ	GPIOR16	= 6	; General Purpose I/O Register 1 bit 6
+.equ	GPIOR17	= 7	; General Purpose I/O Register 1 bit 7
+
+; GPIOR0 - General Purpose I/O Register 0
+.equ	GPIOR00	= 0	; General Purpose I/O Register 0 bit 0
+.equ	GPIOR01	= 1	; General Purpose I/O Register 0 bit 1
+.equ	GPIOR02	= 2	; General Purpose I/O Register 0 bit 2
+.equ	GPIOR03	= 3	; General Purpose I/O Register 0 bit 3
+.equ	GPIOR04	= 4	; General Purpose I/O Register 0 bit 4
+.equ	GPIOR05	= 5	; General Purpose I/O Register 0 bit 5
+.equ	GPIOR06	= 6	; General Purpose I/O Register 0 bit 6
+.equ	GPIOR07	= 7	; General Purpose I/O Register 0 bit 7
+
+; PRR - Power reduction register
+.equ	PRUSART	= 0	; 
+.equ	PRUSI	= 1	; 
+.equ	PRTIM0	= 2	; 
+.equ	PRTIM1	= 3	; 
+
+; BODCR - BOD control register
+.equ	BPDSE	= 0	; 
+.equ	BPDS	= 1	; 
+
+
+
+; ***** LOCKSBITS ********************************************************
+.equ	LB1	= 0	; Lockbit
+.equ	LB2	= 1	; Lockbit
+
+
+; ***** FUSES ************************************************************
+; LOW fuse bits
+.equ	CKSEL0	= 0	; Select Clock Source
+.equ	CKSEL1	= 1	; Select Clock Source
+.equ	CKSEL2	= 2	; Select Clock Source
+.equ	CKSEL3	= 3	; Select Clock Source
+.equ	SUT0	= 4	; Select start-up time
+.equ	SUT1	= 5	; Select start-up time
+.equ	CKOUT	= 6	; Clock output
+.equ	CKDIV8	= 7	; Divide clock by 8
+
+; HIGH fuse bits
+.equ	BODLEVEL0	= 0	; Brown-out Detector trigger level
+.equ	BODLEVEL1	= 1	; Brown-out Detector trigger level
+.equ	BODLEVEL2	= 2	; Brown-out Detector trigger level
+.equ	EESAVE	= 3	; EEPROM memory is preserved through chip erase
+.equ	WDTON	= 4	; Watchdog Timer Always On
+.equ	SPIEN	= 5	; Enable Serial programming and Data Downloading
+.equ	DWEN	= 6	; debugWIRE Enable
+.equ	RSTDISBL	= 7	; External reset disable
+
+; EXTENDED fuse bits
+.equ	SELFPRGEN	= 0	; Self Programming Enable
+
+
+
+; ***** CPU REGISTER DEFINITIONS *****************************************
+.def	XH	= r27
+.def	XL	= r26
+.def	YH	= r29
+.def	YL	= r28
+.def	ZH	= r31
+.def	ZL	= r30
+
+
+
+; ***** DATA MEMORY DECLARATIONS *****************************************
+.equ	FLASHEND	= 0x03ff	; Note: Word address
+.equ	IOEND	= 0x003f
+.equ	SRAM_START	= 0x0060
+.equ	SRAM_SIZE	= 128
+.equ	RAMEND	= 0x00df
+.equ	XRAMEND	= 0x0000
+.equ	E2END	= 0x007f
+.equ	EEPROMEND	= 0x007f
+.equ	EEADRBITS	= 7
+#pragma AVRPART MEMORY PROG_FLASH 2048
+#pragma AVRPART MEMORY EEPROM 128
+#pragma AVRPART MEMORY INT_SRAM SIZE 128
+#pragma AVRPART MEMORY INT_SRAM START_ADDR 0x60
+
+
+
+; ***** BOOTLOADER DECLARATIONS ******************************************
+.equ	NRWW_START_ADDR	= 0x0
+.equ	NRWW_STOP_ADDR	= 0x3ff
+.equ	RWW_START_ADDR	= 0x0
+.equ	RWW_STOP_ADDR	= 0x0
+.equ	PAGESIZE	= 16
+
+
+
+; ***** INTERRUPT VECTORS ************************************************
+.equ	INT0addr	= 0x0001	; External Interrupt Request 0
+.equ	INT1addr	= 0x0002	; External Interrupt Request 1
+.equ	ICP1addr	= 0x0003	; Timer/Counter1 Capture Event
+.equ	OC1Aaddr	= 0x0004	; Timer/Counter1 Compare Match A
+.equ	OC1addr	= 0x0004	; For compatibility
+.equ	OVF1addr	= 0x0005	; Timer/Counter1 Overflow
+.equ	OVF0addr	= 0x0006	; Timer/Counter0 Overflow
+.equ	URXCaddr	= 0x0007	; USART, Rx Complete
+.equ	URXC0addr	= 0x0007	; For compatibility
+.equ	UDREaddr	= 0x0008	; USART Data Register Empty
+.equ	UDRE0addr	= 0x0008	; For compatibility
+.equ	UTXCaddr	= 0x0009	; USART, Tx Complete
+.equ	UTXC0addr	= 0x0009	; For compatibility
+.equ	ACIaddr	= 0x000a	; Analog Comparator
+.equ	PCIBaddr	= 0x000b	; Pin Change Interrupt Request B
+.equ	PCIaddr	= 0x000b	; For compatibility
+.equ	OC1Baddr	= 0x000c	; 
+.equ	OC0Aaddr	= 0x000d	; 
+.equ	OC0Baddr	= 0x000e	; 
+.equ	USI_STARTaddr	= 0x000f	; USI Start Condition
+.equ	USI_OVFaddr	= 0x0010	; USI Overflow
+.equ	ERDYaddr	= 0x0011	; 
+.equ	WDTaddr	= 0x0012	; Watchdog Timer Overflow
+.equ	PCIAaddr	= 0x0013	; Pin Change Interrupt Request A
+.equ	PCIDaddr	= 0x0014	; Pin Change Interrupt Request D
+
+.equ	INT_VECTORS_SIZE	= 21	; size in words
+
+#endif  /* _TN2313ADEF_INC_ */
+
+; ***** END OF FILE ******************************************************