From 21d2c730a29ad37fa901706251eeba73de87702d Mon Sep 17 00:00:00 2001
From: user <none>
Date: Tue, 4 Jul 2023 18:22:33 -0500
Subject: [PATCH] Initial commit

Contains debug program that reads from the ADC and writes to PORTD,
along with a skeleton of comments for future additions.
---
 .gitignore   |   3 +
 build.sh     |   3 +
 clean.sh     |   5 +
 m328Pdef.inc | 977 +++++++++++++++++++++++++++++++++++++++++++++++++++
 program.sh   |   9 +
 siggen.asm   | 381 ++++++++++++++++++++
 6 files changed, 1378 insertions(+)
 create mode 100644 .gitignore
 create mode 100755 build.sh
 create mode 100755 clean.sh
 create mode 100644 m328Pdef.inc
 create mode 100755 program.sh
 create mode 100644 siggen.asm

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e660312
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.cof
+*.hex
+*.obj
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..41bfbaf
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+avra siggen.asm
diff --git a/clean.sh b/clean.sh
new file mode 100755
index 0000000..21be122
--- /dev/null
+++ b/clean.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+rm -f *.hex
+rm -f *.cof
+rm -f *.obj
diff --git a/m328Pdef.inc b/m328Pdef.inc
new file mode 100644
index 0000000..1ff56b8
--- /dev/null
+++ b/m328Pdef.inc
@@ -0,0 +1,977 @@
+;***** THIS IS A MACHINE GENERATED FILE - DO NOT EDIT ********************
+;***** Created: 2008-04-10 09:29 ******* Source: ATmega328P.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         : "m328Pdef.inc"
+;* Title             : Register/Bit Definitions for the ATmega328P
+;* Date              : 2008-04-10
+;* Version           : 2.25
+;* Support E-mail    : avr@atmel.com
+;* Target MCU        : ATmega328P
+;* 
+;* 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 _M328PDEF_INC_
+#define _M328PDEF_INC_
+
+
+#pragma partinc 0
+
+; ***** SPECIFY DEVICE ***************************************************
+.device ATmega328P
+;#pragma AVRPART ADMIN PART_NAME ATmega328P
+.equ	SIGNATURE_000	= 0x1e
+.equ	SIGNATURE_001	= 0x95
+.equ	SIGNATURE_002	= 0x0f
+
+;#pragma AVRPART CORE CORE_VERSION V2E
+
+
+; ***** I/O REGISTER DEFINITIONS *****************************************
+; NOTE:
+; Definitions marked "MEMORY MAPPED"are extended I/O ports
+; and cannot be used with IN/OUT instructions
+.equ	UDR0	= 0xc6	; MEMORY MAPPED
+.equ	UBRR0L	= 0xc4	; MEMORY MAPPED
+.equ	UBRR0H	= 0xc5	; MEMORY MAPPED
+.equ	UCSR0C	= 0xc2	; MEMORY MAPPED
+.equ	UCSR0B	= 0xc1	; MEMORY MAPPED
+.equ	UCSR0A	= 0xc0	; MEMORY MAPPED
+.equ	TWAMR	= 0xbd	; MEMORY MAPPED
+.equ	TWCR	= 0xbc	; MEMORY MAPPED
+.equ	TWDR	= 0xbb	; MEMORY MAPPED
+.equ	TWAR	= 0xba	; MEMORY MAPPED
+.equ	TWSR	= 0xb9	; MEMORY MAPPED
+.equ	TWBR	= 0xb8	; MEMORY MAPPED
+.equ	ASSR	= 0xb6	; MEMORY MAPPED
+.equ	OCR2B	= 0xb4	; MEMORY MAPPED
+.equ	OCR2A	= 0xb3	; MEMORY MAPPED
+.equ	TCNT2	= 0xb2	; MEMORY MAPPED
+.equ	TCCR2B	= 0xb1	; MEMORY MAPPED
+.equ	TCCR2A	= 0xb0	; MEMORY MAPPED
+.equ	OCR1BL	= 0x8a	; MEMORY MAPPED
+.equ	OCR1BH	= 0x8b	; MEMORY MAPPED
+.equ	OCR1AL	= 0x88	; MEMORY MAPPED
+.equ	OCR1AH	= 0x89	; MEMORY MAPPED
+.equ	ICR1L	= 0x86	; MEMORY MAPPED
+.equ	ICR1H	= 0x87	; MEMORY MAPPED
+.equ	TCNT1L	= 0x84	; MEMORY MAPPED
+.equ	TCNT1H	= 0x85	; MEMORY MAPPED
+.equ	TCCR1C	= 0x82	; MEMORY MAPPED
+.equ	TCCR1B	= 0x81	; MEMORY MAPPED
+.equ	TCCR1A	= 0x80	; MEMORY MAPPED
+.equ	DIDR1	= 0x7f	; MEMORY MAPPED
+.equ	DIDR0	= 0x7e	; MEMORY MAPPED
+.equ	ADMUX	= 0x7c	; MEMORY MAPPED
+.equ	ADCSRB	= 0x7b	; MEMORY MAPPED
+.equ	ADCSRA	= 0x7a	; MEMORY MAPPED
+.equ	ADCH	= 0x79	; MEMORY MAPPED
+.equ	ADCL	= 0x78	; MEMORY MAPPED
+.equ	TIMSK2	= 0x70	; MEMORY MAPPED
+.equ	TIMSK1	= 0x6f	; MEMORY MAPPED
+.equ	TIMSK0	= 0x6e	; MEMORY MAPPED
+.equ	PCMSK1	= 0x6c	; MEMORY MAPPED
+.equ	PCMSK2	= 0x6d	; MEMORY MAPPED
+.equ	PCMSK0	= 0x6b	; MEMORY MAPPED
+.equ	EICRA	= 0x69	; MEMORY MAPPED
+.equ	PCICR	= 0x68	; MEMORY MAPPED
+.equ	OSCCAL	= 0x66	; MEMORY MAPPED
+.equ	PRR	= 0x64	; MEMORY MAPPED
+.equ	CLKPR	= 0x61	; MEMORY MAPPED
+.equ	WDTCSR	= 0x60	; MEMORY MAPPED
+.equ	SREG	= 0x3f
+.equ	SPL	= 0x3d
+.equ	SPH	= 0x3e
+.equ	SPMCSR	= 0x37
+.equ	MCUCR	= 0x35
+.equ	MCUSR	= 0x34
+.equ	SMCR	= 0x33
+.equ	ACSR	= 0x30
+.equ	SPDR	= 0x2e
+.equ	SPSR	= 0x2d
+.equ	SPCR	= 0x2c
+.equ	GPIOR2	= 0x2b
+.equ	GPIOR1	= 0x2a
+.equ	OCR0B	= 0x28
+.equ	OCR0A	= 0x27
+.equ	TCNT0	= 0x26
+.equ	TCCR0B	= 0x25
+.equ	TCCR0A	= 0x24
+.equ	GTCCR	= 0x23
+.equ	EEARH	= 0x22
+.equ	EEARL	= 0x21
+.equ	EEDR	= 0x20
+.equ	EECR	= 0x1f
+.equ	GPIOR0	= 0x1e
+.equ	EIMSK	= 0x1d
+.equ	EIFR	= 0x1c
+.equ	PCIFR	= 0x1b
+.equ	TIFR2	= 0x17
+.equ	TIFR1	= 0x16
+.equ	TIFR0	= 0x15
+.equ	PORTD	= 0x0b
+.equ	DDRD	= 0x0a
+.equ	PIND	= 0x09
+.equ	PORTC	= 0x08
+.equ	DDRC	= 0x07
+.equ	PINC	= 0x06
+.equ	PORTB	= 0x05
+.equ	DDRB	= 0x04
+.equ	PINB	= 0x03
+
+
+; ***** BIT DEFINITIONS **************************************************
+
+; ***** USART0 ***********************
+; UDR0 - USART I/O Data Register
+.equ	UDR0_0	= 0	; USART I/O Data Register bit 0
+.equ	UDR0_1	= 1	; USART I/O Data Register bit 1
+.equ	UDR0_2	= 2	; USART I/O Data Register bit 2
+.equ	UDR0_3	= 3	; USART I/O Data Register bit 3
+.equ	UDR0_4	= 4	; USART I/O Data Register bit 4
+.equ	UDR0_5	= 5	; USART I/O Data Register bit 5
+.equ	UDR0_6	= 6	; USART I/O Data Register bit 6
+.equ	UDR0_7	= 7	; USART I/O Data Register bit 7
+
+; UCSR0A - USART Control and Status Register A
+.equ	MPCM0	= 0	; Multi-processor Communication Mode
+.equ	U2X0	= 1	; Double the USART transmission speed
+.equ	UPE0	= 2	; Parity Error
+.equ	DOR0	= 3	; Data overRun
+.equ	FE0	= 4	; Framing Error
+.equ	UDRE0	= 5	; USART Data Register Empty
+.equ	TXC0	= 6	; USART Transmitt Complete
+.equ	RXC0	= 7	; USART Receive Complete
+
+; UCSR0B - USART Control and Status Register B
+.equ	TXB80	= 0	; Transmit Data Bit 8
+.equ	RXB80	= 1	; Receive Data Bit 8
+.equ	UCSZ02	= 2	; Character Size
+.equ	TXEN0	= 3	; Transmitter Enable
+.equ	RXEN0	= 4	; Receiver Enable
+.equ	UDRIE0	= 5	; USART Data register Empty Interrupt Enable
+.equ	TXCIE0	= 6	; TX Complete Interrupt Enable
+.equ	RXCIE0	= 7	; RX Complete Interrupt Enable
+
+; UCSR0C - USART Control and Status Register C
+.equ	UCPOL0	= 0	; Clock Polarity
+.equ	UCSZ00	= 1	; Character Size
+.equ	UCPHA0	= UCSZ00	; For compatibility
+.equ	UCSZ01	= 2	; Character Size
+.equ	UDORD0	= UCSZ01	; For compatibility
+.equ	USBS0	= 3	; Stop Bit Select
+.equ	UPM00	= 4	; Parity Mode Bit 0
+.equ	UPM01	= 5	; Parity Mode Bit 1
+.equ	UMSEL00	= 6	; USART Mode Select
+.equ	UMSEL0	= UMSEL00	; For compatibility
+.equ	UMSEL01	= 7	; USART Mode Select
+.equ	UMSEL1	= UMSEL01	; For compatibility
+
+; UBRR0H - USART Baud Rate Register High Byte
+.equ	UBRR8	= 0	; USART Baud Rate Register bit 8
+.equ	UBRR9	= 1	; USART Baud Rate Register bit 9
+.equ	UBRR10	= 2	; USART Baud Rate Register bit 10
+.equ	UBRR11	= 3	; USART Baud Rate Register bit 11
+
+; UBRR0L - USART Baud Rate Register Low Byte
+.equ	UBRR0	= 0	; USART Baud Rate Register bit 0
+.equ	UBRR1	= 1	; USART Baud Rate Register bit 1
+.equ	UBRR2	= 2	; USART Baud Rate Register bit 2
+.equ	UBRR3	= 3	; USART Baud Rate Register bit 3
+.equ	UBRR4	= 4	; USART Baud Rate Register bit 4
+.equ	UBRR5	= 5	; USART Baud Rate Register bit 5
+.equ	UBRR6	= 6	; USART Baud Rate Register bit 6
+.equ	UBRR7	= 7	; USART Baud Rate Register bit 7
+
+
+; ***** TWI **************************
+; TWAMR - TWI (Slave) Address Mask Register
+.equ	TWAM0	= 1	; 
+.equ	TWAMR0	= TWAM0	; For compatibility
+.equ	TWAM1	= 2	; 
+.equ	TWAMR1	= TWAM1	; For compatibility
+.equ	TWAM2	= 3	; 
+.equ	TWAMR2	= TWAM2	; For compatibility
+.equ	TWAM3	= 4	; 
+.equ	TWAMR3	= TWAM3	; For compatibility
+.equ	TWAM4	= 5	; 
+.equ	TWAMR4	= TWAM4	; For compatibility
+.equ	TWAM5	= 6	; 
+.equ	TWAMR5	= TWAM5	; For compatibility
+.equ	TWAM6	= 7	; 
+.equ	TWAMR6	= TWAM6	; For compatibility
+
+; TWBR - TWI Bit Rate register
+.equ	TWBR0	= 0	; 
+.equ	TWBR1	= 1	; 
+.equ	TWBR2	= 2	; 
+.equ	TWBR3	= 3	; 
+.equ	TWBR4	= 4	; 
+.equ	TWBR5	= 5	; 
+.equ	TWBR6	= 6	; 
+.equ	TWBR7	= 7	; 
+
+; TWCR - TWI Control Register
+.equ	TWIE	= 0	; TWI Interrupt Enable
+.equ	TWEN	= 2	; TWI Enable Bit
+.equ	TWWC	= 3	; TWI Write Collition Flag
+.equ	TWSTO	= 4	; TWI Stop Condition Bit
+.equ	TWSTA	= 5	; TWI Start Condition Bit
+.equ	TWEA	= 6	; TWI Enable Acknowledge Bit
+.equ	TWINT	= 7	; TWI Interrupt Flag
+
+; TWSR - TWI Status Register
+.equ	TWPS0	= 0	; TWI Prescaler
+.equ	TWPS1	= 1	; TWI Prescaler
+.equ	TWS3	= 3	; TWI Status
+.equ	TWS4	= 4	; TWI Status
+.equ	TWS5	= 5	; TWI Status
+.equ	TWS6	= 6	; TWI Status
+.equ	TWS7	= 7	; TWI Status
+
+; TWDR - TWI Data register
+.equ	TWD0	= 0	; TWI Data Register Bit 0
+.equ	TWD1	= 1	; TWI Data Register Bit 1
+.equ	TWD2	= 2	; TWI Data Register Bit 2
+.equ	TWD3	= 3	; TWI Data Register Bit 3
+.equ	TWD4	= 4	; TWI Data Register Bit 4
+.equ	TWD5	= 5	; TWI Data Register Bit 5
+.equ	TWD6	= 6	; TWI Data Register Bit 6
+.equ	TWD7	= 7	; TWI Data Register Bit 7
+
+; TWAR - TWI (Slave) Address register
+.equ	TWGCE	= 0	; TWI General Call Recognition Enable Bit
+.equ	TWA0	= 1	; TWI (Slave) Address register Bit 0
+.equ	TWA1	= 2	; TWI (Slave) Address register Bit 1
+.equ	TWA2	= 3	; TWI (Slave) Address register Bit 2
+.equ	TWA3	= 4	; TWI (Slave) Address register Bit 3
+.equ	TWA4	= 5	; TWI (Slave) Address register Bit 4
+.equ	TWA5	= 6	; TWI (Slave) Address register Bit 5
+.equ	TWA6	= 7	; TWI (Slave) Address register Bit 6
+
+
+; ***** TIMER_COUNTER_1 **************
+; TIMSK1 - Timer/Counter Interrupt Mask Register
+.equ	TOIE1	= 0	; Timer/Counter1 Overflow Interrupt Enable
+.equ	OCIE1A	= 1	; Timer/Counter1 Output CompareA Match Interrupt Enable
+.equ	OCIE1B	= 2	; Timer/Counter1 Output CompareB Match Interrupt Enable
+.equ	ICIE1	= 5	; Timer/Counter1 Input Capture Interrupt Enable
+
+; TIFR1 - Timer/Counter Interrupt Flag register
+.equ	TOV1	= 0	; Timer/Counter1 Overflow Flag
+.equ	OCF1A	= 1	; Output Compare Flag 1A
+.equ	OCF1B	= 2	; Output Compare Flag 1B
+.equ	ICF1	= 5	; Input Capture Flag 1
+
+; TCCR1A - Timer/Counter1 Control Register A
+.equ	WGM10	= 0	; Waveform Generation Mode
+.equ	WGM11	= 1	; Waveform Generation Mode
+.equ	COM1B0	= 4	; Compare Output 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	; Prescaler source of Timer/Counter 1
+.equ	CS11	= 1	; Prescaler source of Timer/Counter 1
+.equ	CS12	= 2	; Prescaler source of Timer/Counter 1
+.equ	WGM12	= 3	; Waveform Generation Mode
+.equ	WGM13	= 4	; Waveform Generation Mode
+.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	; 
+.equ	FOC1A	= 7	; 
+
+; GTCCR - General Timer/Counter Control Register
+.equ	PSRSYNC	= 0	; Prescaler Reset Timer/Counter1 and Timer/Counter0
+.equ	TSM	= 7	; Timer/Counter Synchronization Mode
+
+
+; ***** TIMER_COUNTER_2 **************
+; TIMSK2 - Timer/Counter Interrupt Mask register
+.equ	TOIE2	= 0	; Timer/Counter2 Overflow Interrupt Enable
+.equ	TOIE2A	= TOIE2	; For compatibility
+.equ	OCIE2A	= 1	; Timer/Counter2 Output Compare Match A Interrupt Enable
+.equ	OCIE2B	= 2	; Timer/Counter2 Output Compare Match B Interrupt Enable
+
+; TIFR2 - Timer/Counter Interrupt Flag Register
+.equ	TOV2	= 0	; Timer/Counter2 Overflow Flag
+.equ	OCF2A	= 1	; Output Compare Flag 2A
+.equ	OCF2B	= 2	; Output Compare Flag 2B
+
+; TCCR2A - Timer/Counter2 Control Register A
+.equ	WGM20	= 0	; Waveform Genration Mode
+.equ	WGM21	= 1	; Waveform Genration Mode
+.equ	COM2B0	= 4	; Compare Output Mode bit 0
+.equ	COM2B1	= 5	; Compare Output Mode bit 1
+.equ	COM2A0	= 6	; Compare Output Mode bit 1
+.equ	COM2A1	= 7	; Compare Output Mode bit 1
+
+; TCCR2B - Timer/Counter2 Control Register B
+.equ	CS20	= 0	; Clock Select bit 0
+.equ	CS21	= 1	; Clock Select bit 1
+.equ	CS22	= 2	; Clock Select bit 2
+.equ	WGM22	= 3	; Waveform Generation Mode
+.equ	FOC2B	= 6	; Force Output Compare B
+.equ	FOC2A	= 7	; Force Output Compare A
+
+; TCNT2 - Timer/Counter2
+.equ	TCNT2_0	= 0	; Timer/Counter 2 bit 0
+.equ	TCNT2_1	= 1	; Timer/Counter 2 bit 1
+.equ	TCNT2_2	= 2	; Timer/Counter 2 bit 2
+.equ	TCNT2_3	= 3	; Timer/Counter 2 bit 3
+.equ	TCNT2_4	= 4	; Timer/Counter 2 bit 4
+.equ	TCNT2_5	= 5	; Timer/Counter 2 bit 5
+.equ	TCNT2_6	= 6	; Timer/Counter 2 bit 6
+.equ	TCNT2_7	= 7	; Timer/Counter 2 bit 7
+
+; OCR2A - Timer/Counter2 Output Compare Register A
+.equ	OCR2_0	= 0	; Timer/Counter2 Output Compare Register Bit 0
+.equ	OCR2_1	= 1	; Timer/Counter2 Output Compare Register Bit 1
+.equ	OCR2_2	= 2	; Timer/Counter2 Output Compare Register Bit 2
+.equ	OCR2_3	= 3	; Timer/Counter2 Output Compare Register Bit 3
+.equ	OCR2_4	= 4	; Timer/Counter2 Output Compare Register Bit 4
+.equ	OCR2_5	= 5	; Timer/Counter2 Output Compare Register Bit 5
+.equ	OCR2_6	= 6	; Timer/Counter2 Output Compare Register Bit 6
+.equ	OCR2_7	= 7	; Timer/Counter2 Output Compare Register Bit 7
+
+; OCR2B - Timer/Counter2 Output Compare Register B
+;.equ	OCR2_0	= 0	; Timer/Counter2 Output Compare Register Bit 0
+;.equ	OCR2_1	= 1	; Timer/Counter2 Output Compare Register Bit 1
+;.equ	OCR2_2	= 2	; Timer/Counter2 Output Compare Register Bit 2
+;.equ	OCR2_3	= 3	; Timer/Counter2 Output Compare Register Bit 3
+;.equ	OCR2_4	= 4	; Timer/Counter2 Output Compare Register Bit 4
+;.equ	OCR2_5	= 5	; Timer/Counter2 Output Compare Register Bit 5
+;.equ	OCR2_6	= 6	; Timer/Counter2 Output Compare Register Bit 6
+;.equ	OCR2_7	= 7	; Timer/Counter2 Output Compare Register Bit 7
+
+; ASSR - Asynchronous Status Register
+.equ	TCR2BUB	= 0	; Timer/Counter Control Register2 Update Busy
+.equ	TCR2AUB	= 1	; Timer/Counter Control Register2 Update Busy
+.equ	OCR2BUB	= 2	; Output Compare Register 2 Update Busy
+.equ	OCR2AUB	= 3	; Output Compare Register2 Update Busy
+.equ	TCN2UB	= 4	; Timer/Counter2 Update Busy
+.equ	AS2	= 5	; Asynchronous Timer/Counter2
+.equ	EXCLK	= 6	; Enable External Clock Input
+
+; GTCCR - General Timer Counter Control register
+.equ	PSRASY	= 1	; Prescaler Reset Timer/Counter2
+.equ	PSR2	= PSRASY	; For compatibility
+;.equ	TSM	= 7	; Timer/Counter Synchronization Mode
+
+
+; ***** AD_CONVERTER *****************
+; ADMUX - The ADC multiplexer Selection Register
+.equ	MUX0	= 0	; Analog Channel and Gain Selection Bits
+.equ	MUX1	= 1	; Analog Channel and Gain Selection Bits
+.equ	MUX2	= 2	; Analog Channel and Gain Selection Bits
+.equ	MUX3	= 3	; Analog Channel and Gain Selection Bits
+.equ	ADLAR	= 5	; Left Adjust Result
+.equ	REFS0	= 6	; Reference Selection Bit 0
+.equ	REFS1	= 7	; Reference Selection Bit 1
+
+; ADCSRA - The ADC Control and Status register A
+.equ	ADPS0	= 0	; ADC  Prescaler Select Bits
+.equ	ADPS1	= 1	; ADC  Prescaler Select Bits
+.equ	ADPS2	= 2	; ADC  Prescaler Select Bits
+.equ	ADIE	= 3	; ADC Interrupt Enable
+.equ	ADIF	= 4	; ADC Interrupt Flag
+.equ	ADATE	= 5	; ADC  Auto Trigger Enable
+.equ	ADSC	= 6	; ADC Start Conversion
+.equ	ADEN	= 7	; ADC Enable
+
+; ADCSRB - The ADC Control and Status register B
+.equ	ADTS0	= 0	; ADC Auto Trigger Source bit 0
+.equ	ADTS1	= 1	; ADC Auto Trigger Source bit 1
+.equ	ADTS2	= 2	; ADC Auto Trigger Source bit 2
+.equ	ACME	= 6	; 
+
+; ADCH - ADC Data Register High Byte
+.equ	ADCH0	= 0	; ADC Data Register High Byte Bit 0
+.equ	ADCH1	= 1	; ADC Data Register High Byte Bit 1
+.equ	ADCH2	= 2	; ADC Data Register High Byte Bit 2
+.equ	ADCH3	= 3	; ADC Data Register High Byte Bit 3
+.equ	ADCH4	= 4	; ADC Data Register High Byte Bit 4
+.equ	ADCH5	= 5	; ADC Data Register High Byte Bit 5
+.equ	ADCH6	= 6	; ADC Data Register High Byte Bit 6
+.equ	ADCH7	= 7	; ADC Data Register High Byte Bit 7
+
+; ADCL - ADC Data Register Low Byte
+.equ	ADCL0	= 0	; ADC Data Register Low Byte Bit 0
+.equ	ADCL1	= 1	; ADC Data Register Low Byte Bit 1
+.equ	ADCL2	= 2	; ADC Data Register Low Byte Bit 2
+.equ	ADCL3	= 3	; ADC Data Register Low Byte Bit 3
+.equ	ADCL4	= 4	; ADC Data Register Low Byte Bit 4
+.equ	ADCL5	= 5	; ADC Data Register Low Byte Bit 5
+.equ	ADCL6	= 6	; ADC Data Register Low Byte Bit 6
+.equ	ADCL7	= 7	; ADC Data Register Low Byte Bit 7
+
+; DIDR0 - Digital Input Disable Register
+.equ	ADC0D	= 0	; 
+.equ	ADC1D	= 1	; 
+.equ	ADC2D	= 2	; 
+.equ	ADC3D	= 3	; 
+.equ	ADC4D	= 4	; 
+.equ	ADC5D	= 5	; 
+
+
+; ***** 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	; Analog Comparator Input Capture Enable
+.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
+
+; DIDR1 - Digital Input Disable Register 1
+.equ	AIN0D	= 0	; AIN0 Digital Input Disable
+.equ	AIN1D	= 1	; AIN1 Digital Input Disable
+
+
+; ***** 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
+
+
+; ***** PORTC ************************
+; PORTC - Port C Data Register
+.equ	PORTC0	= 0	; Port C Data Register bit 0
+.equ	PC0	= 0	; For compatibility
+.equ	PORTC1	= 1	; Port C Data Register bit 1
+.equ	PC1	= 1	; For compatibility
+.equ	PORTC2	= 2	; Port C Data Register bit 2
+.equ	PC2	= 2	; For compatibility
+.equ	PORTC3	= 3	; Port C Data Register bit 3
+.equ	PC3	= 3	; For compatibility
+.equ	PORTC4	= 4	; Port C Data Register bit 4
+.equ	PC4	= 4	; For compatibility
+.equ	PORTC5	= 5	; Port C Data Register bit 5
+.equ	PC5	= 5	; For compatibility
+.equ	PORTC6	= 6	; Port C Data Register bit 6
+.equ	PC6	= 6	; For compatibility
+
+; DDRC - Port C Data Direction Register
+.equ	DDC0	= 0	; Port C Data Direction Register bit 0
+.equ	DDC1	= 1	; Port C Data Direction Register bit 1
+.equ	DDC2	= 2	; Port C Data Direction Register bit 2
+.equ	DDC3	= 3	; Port C Data Direction Register bit 3
+.equ	DDC4	= 4	; Port C Data Direction Register bit 4
+.equ	DDC5	= 5	; Port C Data Direction Register bit 5
+.equ	DDC6	= 6	; Port C Data Direction Register bit 6
+
+; PINC - Port C Input Pins
+.equ	PINC0	= 0	; Port C Input Pins bit 0
+.equ	PINC1	= 1	; Port C Input Pins bit 1
+.equ	PINC2	= 2	; Port C Input Pins bit 2
+.equ	PINC3	= 3	; Port C Input Pins bit 3
+.equ	PINC4	= 4	; Port C Input Pins bit 4
+.equ	PINC5	= 5	; Port C Input Pins bit 5
+.equ	PINC6	= 6	; Port C Input Pins bit 6
+
+
+; ***** PORTD ************************
+; PORTD - Port D Data Register
+.equ	PORTD0	= 0	; Port D Data Register bit 0
+.equ	PD0	= 0	; For compatibility
+.equ	PORTD1	= 1	; Port D Data Register bit 1
+.equ	PD1	= 1	; For compatibility
+.equ	PORTD2	= 2	; Port D Data Register bit 2
+.equ	PD2	= 2	; For compatibility
+.equ	PORTD3	= 3	; Port D Data Register bit 3
+.equ	PD3	= 3	; For compatibility
+.equ	PORTD4	= 4	; Port D Data Register bit 4
+.equ	PD4	= 4	; For compatibility
+.equ	PORTD5	= 5	; Port D Data Register bit 5
+.equ	PD5	= 5	; For compatibility
+.equ	PORTD6	= 6	; Port D Data Register bit 6
+.equ	PD6	= 6	; For compatibility
+.equ	PORTD7	= 7	; Port D Data Register bit 7
+.equ	PD7	= 7	; For compatibility
+
+; DDRD - Port D Data Direction Register
+.equ	DDD0	= 0	; Port D Data Direction Register bit 0
+.equ	DDD1	= 1	; Port D Data Direction Register bit 1
+.equ	DDD2	= 2	; Port D Data Direction Register bit 2
+.equ	DDD3	= 3	; Port D Data Direction Register bit 3
+.equ	DDD4	= 4	; Port D Data Direction Register bit 4
+.equ	DDD5	= 5	; Port D Data Direction Register bit 5
+.equ	DDD6	= 6	; Port D Data Direction Register bit 6
+.equ	DDD7	= 7	; Port D Data Direction Register bit 7
+
+; PIND - Port D Input Pins
+.equ	PIND0	= 0	; Port D Input Pins bit 0
+.equ	PIND1	= 1	; Port D Input Pins bit 1
+.equ	PIND2	= 2	; Port D Input Pins bit 2
+.equ	PIND3	= 3	; Port D Input Pins bit 3
+.equ	PIND4	= 4	; Port D Input Pins bit 4
+.equ	PIND5	= 5	; Port D Input Pins bit 5
+.equ	PIND6	= 6	; Port D Input Pins bit 6
+.equ	PIND7	= 7	; Port D Input Pins bit 7
+
+
+; ***** TIMER_COUNTER_0 **************
+; TIMSK0 - Timer/Counter0 Interrupt Mask Register
+.equ	TOIE0	= 0	; Timer/Counter0 Overflow Interrupt Enable
+.equ	OCIE0A	= 1	; Timer/Counter0 Output Compare Match A Interrupt Enable
+.equ	OCIE0B	= 2	; Timer/Counter0 Output Compare Match B Interrupt Enable
+
+; TIFR0 - Timer/Counter0 Interrupt Flag register
+.equ	TOV0	= 0	; Timer/Counter0 Overflow Flag
+.equ	OCF0A	= 1	; Timer/Counter0 Output Compare Flag 0A
+.equ	OCF0B	= 2	; Timer/Counter0 Output Compare Flag 0B
+
+; TCCR0A - Timer/Counter  Control Register A
+.equ	WGM00	= 0	; Waveform Generation Mode
+.equ	WGM01	= 1	; Waveform Generation Mode
+.equ	COM0B0	= 4	; Compare Output Mode, Fast PWm
+.equ	COM0B1	= 5	; Compare Output Mode, Fast PWm
+.equ	COM0A0	= 6	; Compare Output Mode, Phase Correct PWM Mode
+.equ	COM0A1	= 7	; Compare Output Mode, Phase Correct PWM Mode
+
+; TCCR0B - Timer/Counter Control Register B
+.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 A
+
+; 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	; 
+
+; OCR0A - Timer/Counter0 Output Compare Register
+.equ	OCROA_0	= 0	; 
+.equ	OCROA_1	= 1	; 
+.equ	OCROA_2	= 2	; 
+.equ	OCROA_3	= 3	; 
+.equ	OCROA_4	= 4	; 
+.equ	OCROA_5	= 5	; 
+.equ	OCROA_6	= 6	; 
+.equ	OCROA_7	= 7	; 
+
+; OCR0B - Timer/Counter0 Output Compare Register
+.equ	OCR0B_0	= 0	; 
+.equ	OCR0B_1	= 1	; 
+.equ	OCR0B_2	= 2	; 
+.equ	OCR0B_3	= 3	; 
+.equ	OCR0B_4	= 4	; 
+.equ	OCR0B_5	= 5	; 
+.equ	OCR0B_6	= 6	; 
+.equ	OCR0B_7	= 7	; 
+
+; GTCCR - General Timer/Counter Control Register
+;.equ	PSRSYNC	= 0	; Prescaler Reset Timer/Counter1 and Timer/Counter0
+.equ	PSR10	= PSRSYNC	; For compatibility
+;.equ	TSM	= 7	; Timer/Counter Synchronization Mode
+
+
+; ***** EXTERNAL_INTERRUPT ***********
+; EICRA - External Interrupt Control Register
+.equ	ISC00	= 0	; External Interrupt Sense Control 0 Bit 0
+.equ	ISC01	= 1	; External Interrupt Sense Control 0 Bit 1
+.equ	ISC10	= 2	; External Interrupt Sense Control 1 Bit 0
+.equ	ISC11	= 3	; External Interrupt Sense Control 1 Bit 1
+
+; EIMSK - External Interrupt Mask Register
+.equ	INT0	= 0	; External Interrupt Request 0 Enable
+.equ	INT1	= 1	; External Interrupt Request 1 Enable
+
+; EIFR - External Interrupt Flag Register
+.equ	INTF0	= 0	; External Interrupt Flag 0
+.equ	INTF1	= 1	; External Interrupt Flag 1
+
+; PCICR - Pin Change Interrupt Control Register
+.equ	PCIE0	= 0	; Pin Change Interrupt Enable 0
+.equ	PCIE1	= 1	; Pin Change Interrupt Enable 1
+.equ	PCIE2	= 2	; Pin Change Interrupt Enable 2
+
+; PCMSK2 - Pin Change Mask Register 2
+.equ	PCINT16	= 0	; Pin Change Enable Mask 16
+.equ	PCINT17	= 1	; Pin Change Enable Mask 17
+.equ	PCINT18	= 2	; Pin Change Enable Mask 18
+.equ	PCINT19	= 3	; Pin Change Enable Mask 19
+.equ	PCINT20	= 4	; Pin Change Enable Mask 20
+.equ	PCINT21	= 5	; Pin Change Enable Mask 21
+.equ	PCINT22	= 6	; Pin Change Enable Mask 22
+.equ	PCINT23	= 7	; Pin Change Enable Mask 23
+
+; PCMSK1 - Pin Change Mask Register 1
+.equ	PCINT8	= 0	; Pin Change Enable Mask 8
+.equ	PCINT9	= 1	; Pin Change Enable Mask 9
+.equ	PCINT10	= 2	; Pin Change Enable Mask 10
+.equ	PCINT11	= 3	; Pin Change Enable Mask 11
+.equ	PCINT12	= 4	; Pin Change Enable Mask 12
+.equ	PCINT13	= 5	; Pin Change Enable Mask 13
+.equ	PCINT14	= 6	; Pin Change Enable Mask 14
+
+; PCMSK0 - Pin Change Mask Register 0
+.equ	PCINT0	= 0	; Pin Change Enable Mask 0
+.equ	PCINT1	= 1	; Pin Change Enable Mask 1
+.equ	PCINT2	= 2	; Pin Change Enable Mask 2
+.equ	PCINT3	= 3	; Pin Change Enable Mask 3
+.equ	PCINT4	= 4	; Pin Change Enable Mask 4
+.equ	PCINT5	= 5	; Pin Change Enable Mask 5
+.equ	PCINT6	= 6	; Pin Change Enable Mask 6
+.equ	PCINT7	= 7	; Pin Change Enable Mask 7
+
+; PCIFR - Pin Change Interrupt Flag Register
+.equ	PCIF0	= 0	; Pin Change Interrupt Flag 0
+.equ	PCIF1	= 1	; Pin Change Interrupt Flag 1
+.equ	PCIF2	= 2	; Pin Change Interrupt Flag 2
+
+
+; ***** SPI **************************
+; SPDR - SPI Data Register
+.equ	SPDR0	= 0	; SPI Data Register bit 0
+.equ	SPDR1	= 1	; SPI Data Register bit 1
+.equ	SPDR2	= 2	; SPI Data Register bit 2
+.equ	SPDR3	= 3	; SPI Data Register bit 3
+.equ	SPDR4	= 4	; SPI Data Register bit 4
+.equ	SPDR5	= 5	; SPI Data Register bit 5
+.equ	SPDR6	= 6	; SPI Data Register bit 6
+.equ	SPDR7	= 7	; SPI Data Register bit 7
+
+; SPSR - SPI Status Register
+.equ	SPI2X	= 0	; Double SPI Speed Bit
+.equ	WCOL	= 6	; Write Collision Flag
+.equ	SPIF	= 7	; SPI Interrupt Flag
+
+; SPCR - SPI Control Register
+.equ	SPR0	= 0	; SPI Clock Rate Select 0
+.equ	SPR1	= 1	; SPI Clock Rate Select 1
+.equ	CPHA	= 2	; Clock Phase
+.equ	CPOL	= 3	; Clock polarity
+.equ	MSTR	= 4	; Master/Slave Select
+.equ	DORD	= 5	; Data Order
+.equ	SPE	= 6	; SPI Enable
+.equ	SPIE	= 7	; SPI Interrupt Enable
+
+
+; ***** WATCHDOG *********************
+; WDTCSR - Watchdog Timer Control Register
+.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	WDP3	= 5	; Watchdog Timer Prescaler Bit 3
+.equ	WDIE	= 6	; Watchdog Timeout Interrupt Enable
+.equ	WDIF	= 7	; Watchdog Timeout Interrupt Flag
+
+
+; ***** 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
+
+; OSCCAL - Oscillator Calibration Value
+.equ	CAL0	= 0	; Oscillator Calibration Value Bit0
+.equ	CAL1	= 1	; Oscillator Calibration Value Bit1
+.equ	CAL2	= 2	; Oscillator Calibration Value Bit2
+.equ	CAL3	= 3	; Oscillator Calibration Value Bit3
+.equ	CAL4	= 4	; Oscillator Calibration Value Bit4
+.equ	CAL5	= 5	; Oscillator Calibration Value Bit5
+.equ	CAL6	= 6	; Oscillator Calibration Value Bit6
+.equ	CAL7	= 7	; Oscillator Calibration Value Bit7
+
+; 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
+
+; SPMCSR - Store Program Memory Control and Status Register
+.equ	SELFPRGEN	= 0	; Self Programming Enable
+.equ	PGERS	= 1	; Page Erase
+.equ	PGWRT	= 2	; Page Write
+.equ	BLBSET	= 3	; Boot Lock Bit Set
+.equ	RWWSRE	= 4	; Read-While-Write section read enable
+.equ	RWWSB	= 6	; Read-While-Write Section Busy
+.equ	SPMIE	= 7	; SPM Interrupt Enable
+
+; MCUCR - MCU Control Register
+.equ	IVCE	= 0	; 
+.equ	IVSEL	= 1	; 
+.equ	PUD	= 4	; 
+.equ	BODSE	= 5	; BOD Sleep Enable
+.equ	BODS	= 6	; BOD Sleep
+
+; MCUSR - MCU Status Register
+.equ	PORF	= 0	; Power-on reset flag
+.equ	EXTRF	= 1	; External Reset Flag
+.equ	EXTREF	= EXTRF	; For compatibility
+.equ	BORF	= 2	; Brown-out Reset Flag
+.equ	WDRF	= 3	; Watchdog Reset Flag
+
+; SMCR - Sleep Mode Control Register
+.equ	SE	= 0	; Sleep Enable
+.equ	SM0	= 1	; Sleep Mode Select Bit 0
+.equ	SM1	= 2	; Sleep Mode Select Bit 1
+.equ	SM2	= 3	; Sleep Mode Select Bit 2
+
+; GPIOR2 - General Purpose I/O Register 2
+.equ	GPIOR20	= 0	; 
+.equ	GPIOR21	= 1	; 
+.equ	GPIOR22	= 2	; 
+.equ	GPIOR23	= 3	; 
+.equ	GPIOR24	= 4	; 
+.equ	GPIOR25	= 5	; 
+.equ	GPIOR26	= 6	; 
+.equ	GPIOR27	= 7	; 
+
+; GPIOR1 - General Purpose I/O Register 1
+.equ	GPIOR10	= 0	; 
+.equ	GPIOR11	= 1	; 
+.equ	GPIOR12	= 2	; 
+.equ	GPIOR13	= 3	; 
+.equ	GPIOR14	= 4	; 
+.equ	GPIOR15	= 5	; 
+.equ	GPIOR16	= 6	; 
+.equ	GPIOR17	= 7	; 
+
+; GPIOR0 - General Purpose I/O Register 0
+.equ	GPIOR00	= 0	; 
+.equ	GPIOR01	= 1	; 
+.equ	GPIOR02	= 2	; 
+.equ	GPIOR03	= 3	; 
+.equ	GPIOR04	= 4	; 
+.equ	GPIOR05	= 5	; 
+.equ	GPIOR06	= 6	; 
+.equ	GPIOR07	= 7	; 
+
+; PRR - Power Reduction Register
+.equ	PRADC	= 0	; Power Reduction ADC
+.equ	PRUSART0	= 1	; Power Reduction USART
+.equ	PRSPI	= 2	; Power Reduction Serial Peripheral Interface
+.equ	PRTIM1	= 3	; Power Reduction Timer/Counter1
+.equ	PRTIM0	= 5	; Power Reduction Timer/Counter0
+.equ	PRTIM2	= 6	; Power Reduction Timer/Counter2
+.equ	PRTWI	= 7	; Power Reduction TWI
+
+
+; ***** EEPROM ***********************
+; EEARL - EEPROM Address Register Low Byte
+.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
+.equ	EEAR7	= 7	; EEPROM Read/Write Access Bit 7
+
+; EEARH - EEPROM Address Register High Byte
+.equ	EEAR8	= 0	; EEPROM Read/Write Access Bit 8
+.equ	EEAR9	= 1	; EEPROM Read/Write Access Bit 9
+
+; 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	EEMPE	= 2	; EEPROM Master Write Enable
+.equ	EERIE	= 3	; EEPROM Ready Interrupt Enable
+.equ	EEPM0	= 4	; EEPROM Programming Mode Bit 0
+.equ	EEPM1	= 5	; EEPROM Programming Mode Bit 1
+
+
+
+; ***** LOCKSBITS ********************************************************
+.equ	LB1	= 0	; Lock bit
+.equ	LB2	= 1	; Lock bit
+.equ	BLB01	= 2	; Boot Lock bit
+.equ	BLB02	= 3	; Boot Lock bit
+.equ	BLB11	= 4	; Boot lock bit
+.equ	BLB12	= 5	; Boot lock bit
+
+
+; ***** 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	BOOTRST	= 0	; Select reset vector
+.equ	BOOTSZ0	= 1	; Select boot size
+.equ	BOOTSZ1	= 2	; Select boot size
+.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	BODLEVEL0	= 0	; Brown-out Detector trigger level
+.equ	BODLEVEL1	= 1	; Brown-out Detector trigger level
+.equ	BODLEVEL2	= 2	; Brown-out Detector trigger level
+
+
+
+; ***** 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	= 0x3fff	; Note: Word address
+.equ	IOEND	= 0x00ff
+.equ	SRAM_START	= 0x0100
+.equ	SRAM_SIZE	= 2048
+.equ	RAMEND	= 0x08ff
+.equ	XRAMEND	= 0x0000
+.equ	E2END	= 0x03ff
+.equ	EEPROMEND	= 0x03ff
+.equ	EEADRBITS	= 10
+;#pragma AVRPART MEMORY PROG_FLASH 32768
+;#pragma AVRPART MEMORY EEPROM 1024
+;#pragma AVRPART MEMORY INT_SRAM SIZE 2048
+;#pragma AVRPART MEMORY INT_SRAM START_ADDR 0x100
+
+
+
+; ***** BOOTLOADER DECLARATIONS ******************************************
+.equ	NRWW_START_ADDR	= 0x3800
+.equ	NRWW_STOP_ADDR	= 0x3fff
+.equ	RWW_START_ADDR	= 0x0
+.equ	RWW_STOP_ADDR	= 0x37ff
+.equ	PAGESIZE	= 64
+.equ	FIRSTBOOTSTART	= 0x3f00
+.equ	SECONDBOOTSTART	= 0x3e00
+.equ	THIRDBOOTSTART	= 0x3c00
+.equ	FOURTHBOOTSTART	= 0x3800
+.equ	SMALLBOOTSTART	= FIRSTBOOTSTART
+.equ	LARGEBOOTSTART	= FOURTHBOOTSTART
+
+
+
+; ***** INTERRUPT VECTORS ************************************************
+.equ	INT0addr	= 0x0002	; External Interrupt Request 0
+.equ	INT1addr	= 0x0004	; External Interrupt Request 1
+.equ	PCI0addr	= 0x0006	; Pin Change Interrupt Request 0
+.equ	PCI1addr	= 0x0008	; Pin Change Interrupt Request 0
+.equ	PCI2addr	= 0x000a	; Pin Change Interrupt Request 1
+.equ	WDTaddr	= 0x000c	; Watchdog Time-out Interrupt
+.equ	OC2Aaddr	= 0x000e	; Timer/Counter2 Compare Match A
+.equ	OC2Baddr	= 0x0010	; Timer/Counter2 Compare Match A
+.equ	OVF2addr	= 0x0012	; Timer/Counter2 Overflow
+.equ	ICP1addr	= 0x0014	; Timer/Counter1 Capture Event
+.equ	OC1Aaddr	= 0x0016	; Timer/Counter1 Compare Match A
+.equ	OC1Baddr	= 0x0018	; Timer/Counter1 Compare Match B
+.equ	OVF1addr	= 0x001a	; Timer/Counter1 Overflow
+.equ	OC0Aaddr	= 0x001c	; TimerCounter0 Compare Match A
+.equ	OC0Baddr	= 0x001e	; TimerCounter0 Compare Match B
+.equ	OVF0addr	= 0x0020	; Timer/Couner0 Overflow
+.equ	SPIaddr	= 0x0022	; SPI Serial Transfer Complete
+.equ	URXCaddr	= 0x0024	; USART Rx Complete
+.equ	UDREaddr	= 0x0026	; USART, Data Register Empty
+.equ	UTXCaddr	= 0x0028	; USART Tx Complete
+.equ	ADCCaddr	= 0x002a	; ADC Conversion Complete
+.equ	ERDYaddr	= 0x002c	; EEPROM Ready
+.equ	ACIaddr	= 0x002e	; Analog Comparator
+.equ	TWIaddr	= 0x0030	; Two-wire Serial Interface
+.equ	SPMRaddr	= 0x0032	; Store Program Memory Read
+
+.equ	INT_VECTORS_SIZE	= 52	; size in words
+
+#endif  /* _M328PDEF_INC_ */
+
+; ***** END OF FILE ******************************************************
diff --git a/program.sh b/program.sh
new file mode 100755
index 0000000..471116d
--- /dev/null
+++ b/program.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -ve
+
+TARGET="atmega328p"
+PORT="/dev/ttyUSB0"
+PROGRAMMER="-P ${PORT} -b 19200 -c avrisp"
+
+avrdude ${PROGRAMMER} -p ${TARGET} -U flash:w:siggen.hex
+
diff --git a/siggen.asm b/siggen.asm
new file mode 100644
index 0000000..c82975f
--- /dev/null
+++ b/siggen.asm
@@ -0,0 +1,381 @@
+; ------------------------------------------------------------------------------
+; test.asm
+;
+; Blinks an LED on PD0 (digital out 0)
+; ------------------------------------------------------------------------------
+
+.include "./m328Pdef.inc"
+
+; ------------------------------------------------------------------------------
+; Interrupt vector table
+
+.cseg
+
+.org 0x0000
+	rjmp	reset   ; RESET
+	reti
+	reti            ; INT0
+	reti
+	reti            ; INT1
+	reti
+	reti            ; PCINT0
+	reti
+	reti            ; PCINT1
+	reti
+	reti            ; PCINT2
+	reti
+	reti            ; WDT
+	reti
+	reti            ; TIMER2 COMPA
+	reti
+	reti            ; TIMER2 COMPB
+	reti
+	reti            ; TIMER2 OVF
+	reti
+	reti            ; TIMER1 CAPT
+	reti
+	reti            ; TIMER1 COMPA
+	reti
+	reti            ; TIMER1 COMPB
+	reti
+	reti            ; TIMER1 OVF
+	reti
+	reti            ; TIMER0 COMPA
+	reti
+	reti            ; TIMER0 COMPB
+	reti
+	reti            ; TIMER0 OVF
+	reti
+	reti            ; SPI, STC
+	reti
+	reti            ; USART, RX
+	reti
+	reti            ; USART, UDRE
+	reti
+	reti            ; USART, TX
+	reti
+	reti            ; ADC
+	reti
+	reti            ; EE READY
+	reti
+	reti            ; ANALOG COMP
+	reti
+	reti            ; TWI
+	reti
+	reti            ; SPM READY
+	reti
+
+
+; ------------------------------------------------------------------------------
+; Reset entry point
+
+reset:
+	; ----- Disable interrupts and set stack pointer to top of SRAM
+
+	eor	r25, r25
+	out	SREG, r25
+	ldi	r25, HIGH(RAMEND)
+	ldi	r24, LOW(RAMEND)
+	out	SPH, r25
+	out	SPL, r24
+
+	; ----- Set up PORTD for outputting samples, initial output to center of range
+
+	ldi	r25, 0x80
+	out	PORTD, r25
+	ldi	r25, 0xff
+	out	DDRD, r25
+
+	; ----- Set up ADC for reading the frequency knob
+
+	; ADEN  <= 1  Enable ADC
+	; ADSC  <= 0  Do not start conversion
+	; ADATE <= 0  Do not autotrigger
+	; ADIF  <= 1  Clear any pending interrupt flags (just in case)
+	; ADIE  <= 0  Disable ADC interrupts (we will poll ADIF)
+	; ADPS  <= 7  System clock 16MHz, ADC requres <= 200kHz, scale by 128
+	ldi	r25, (1 << ADEN)  | \
+		     (0 << ADSC)  | \
+		     (0 << ADATE) | \
+		     (1 << ADIF)  | \
+		     (0 << ADIE)  | \
+		     (7 << ADPS0)
+	sts	ADCSRA, r25
+
+	; REFS  <= 0  Use AREF as reference
+	; ADLAR <= 1  Left-justify ADC results (debug only)
+	; MUX   <= 0  Select input ADC0
+	ldi	r25, (0 << REFS0) | \
+		     (1 << ADLAR) | \
+		     (0 << MUX0)
+	sts	ADMUX, r25
+
+	; Disable digital input on ADC pin
+	lds	r25, DIDR0
+	andi	r25, ~(1 << ADC0D)
+	sts	DIDR0, r25
+
+	; ADCSRB is for the comparator and autotrigger, neither are active
+
+	; ----- Set up button pin and timer for switching waveforms
+
+	; ----- Copy the default waveform to ram
+
+	; ----- Enable interrupts
+
+	; --------------------------------------------------------------
+loop:
+	; Output a sample and advance
+
+	; ----- Read the frequency knob and adjust if necessary
+
+	; Trigger a single conversion
+	lds	r25, ADCSRA
+	ori	r25, (1 << ADSC)
+	sts	ADCSRA, r25
+
+	; Wait for conversion to complete
+_adc_wait:
+	lds	r25, ADCSRA
+	sbrs	r25, ADIF    ; Test for interrupt flag
+	rjmp	_adc_wait
+	sts	ADCSRA, r25  ; Store back to clear the interrupt flag (w1c)
+
+	; Read value and write to output
+	lds	r25, ADCH
+	out	PORTD, r25
+
+	rjmp	loop
+
+
+; ------------------------------------------------------------------------------
+; Key press interrupt handler
+
+keypress:
+	; Wait for the switch bounce to settle
+
+	; Advance to the next waveform
+
+	; Copy the waveform to ram
+
+	; Wait for the key to be unpressed
+
+	; Wait for the switch bounce to settle
+
+	reti
+
+
+; ------------------------------------------------------------------------------
+; Waveform data
+
+.dseg
+
+waveform:
+	.byte	256
+
+.cseg
+
+sine:
+	.db	0x80, 0x83, 0x86, 0x89, 0x8c, 0x8f, 0x92, 0x95
+	.db	0x98, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae
+	.db	0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4
+	.db	0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8
+	.db	0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8
+	.db	0xea, 0xec, 0xed, 0xef, 0xf0, 0xf2, 0xf3, 0xf5
+	.db	0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc
+	.db	0xfd, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe
+	.db	0xfd, 0xfc, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7
+	.db	0xf6, 0xf5, 0xf3, 0xf2, 0xf0, 0xef, 0xed, 0xec
+	.db	0xea, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc
+	.db	0xda, 0xd8, 0xd5, 0xd3, 0xd1, 0xce, 0xcc, 0xc9
+	.db	0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb3
+	.db	0xb0, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c
+	.db	0x98, 0x95, 0x92, 0x8f, 0x8c, 0x89, 0x86, 0x83
+	.db	0x80, 0x7c, 0x79, 0x76, 0x73, 0x70, 0x6d, 0x6a
+	.db	0x67, 0x63, 0x60, 0x5d, 0x5a, 0x57, 0x54, 0x51
+	.db	0x4f, 0x4c, 0x49, 0x46, 0x43, 0x40, 0x3e, 0x3b
+	.db	0x38, 0x36, 0x33, 0x31, 0x2e, 0x2c, 0x2a, 0x27
+	.db	0x25, 0x23, 0x21, 0x1f, 0x1d, 0x1b, 0x19, 0x17
+	.db	0x15, 0x13, 0x12, 0x10, 0x0f, 0x0d, 0x0c, 0x0a
+	.db	0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x03
+	.db	0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01
+	.db	0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
+	.db	0x09, 0x0a, 0x0c, 0x0d, 0x0f, 0x10, 0x12, 0x13
+	.db	0x15, 0x17, 0x19, 0x1b, 0x1d, 0x1f, 0x21, 0x23
+	.db	0x25, 0x27, 0x2a, 0x2c, 0x2e, 0x31, 0x33, 0x36
+	.db	0x38, 0x3b, 0x3e, 0x40, 0x43, 0x46, 0x49, 0x4c
+	.db	0x4f, 0x51, 0x54, 0x57, 0x5a, 0x5d, 0x60, 0x63
+	.db	0x67, 0x6a, 0x6d, 0x70, 0x73, 0x76, 0x79, 0x7c
+
+square:
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	.db	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+
+rising_saw:
+	.db	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
+	.db	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+	.db	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17
+	.db	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+	.db	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27
+	.db	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
+	.db	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37
+	.db	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f
+	.db	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47
+	.db	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f
+	.db	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57
+	.db	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f
+	.db	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67
+	.db	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f
+	.db	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77
+	.db	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f
+	.db	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87
+	.db	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f
+	.db	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97
+	.db	0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f
+	.db	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7
+	.db	0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf
+	.db	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7
+	.db	0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf
+	.db	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7
+	.db	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf
+	.db	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7
+	.db	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf
+	.db	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7
+	.db	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef
+	.db	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7
+	.db	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
+
+falling_saw:
+	.db	0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8
+	.db	0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0
+	.db	0xef, 0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8
+	.db	0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0
+	.db	0xdf, 0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8
+	.db	0xd7, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xd0
+	.db	0xcf, 0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8
+	.db	0xc7, 0xc6, 0xc5, 0xc4, 0xc3, 0xc2, 0xc1, 0xc0
+	.db	0xbf, 0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8
+	.db	0xb7, 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1, 0xb0
+	.db	0xaf, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8
+	.db	0xa7, 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1, 0xa0
+	.db	0x9f, 0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98
+	.db	0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90
+	.db	0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88
+	.db	0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81, 0x80
+	.db	0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78
+	.db	0x77, 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x70
+	.db	0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68
+	.db	0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61, 0x60
+	.db	0x5f, 0x5e, 0x5d, 0x5c, 0x5b, 0x5a, 0x59, 0x58
+	.db	0x57, 0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50
+	.db	0x4f, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x48
+	.db	0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41, 0x40
+	.db	0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38
+	.db	0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30
+	.db	0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28
+	.db	0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20
+	.db	0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18
+	.db	0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10
+	.db	0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08
+	.db	0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00
+
+triangle:
+	.db	0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e
+	.db	0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e
+	.db	0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e
+	.db	0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e
+	.db	0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e
+	.db	0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e
+	.db	0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e
+	.db	0x70, 0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e
+	.db	0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e
+	.db	0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e
+	.db	0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae
+	.db	0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe
+	.db	0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce
+	.db	0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde
+	.db	0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee
+	.db	0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe
+	.db	0xff, 0xfd, 0xfb, 0xf9, 0xf7, 0xf5, 0xf3, 0xf1
+	.db	0xef, 0xed, 0xeb, 0xe9, 0xe7, 0xe5, 0xe3, 0xe1
+	.db	0xdf, 0xdd, 0xdb, 0xd9, 0xd7, 0xd5, 0xd3, 0xd1
+	.db	0xcf, 0xcd, 0xcb, 0xc9, 0xc7, 0xc5, 0xc3, 0xc1
+	.db	0xbf, 0xbd, 0xbb, 0xb9, 0xb7, 0xb5, 0xb3, 0xb1
+	.db	0xaf, 0xad, 0xab, 0xa9, 0xa7, 0xa5, 0xa3, 0xa1
+	.db	0x9f, 0x9d, 0x9b, 0x99, 0x97, 0x95, 0x93, 0x91
+	.db	0x8f, 0x8d, 0x8b, 0x89, 0x87, 0x85, 0x83, 0x81
+	.db	0x7f, 0x7d, 0x7b, 0x79, 0x77, 0x75, 0x73, 0x71
+	.db	0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61
+	.db	0x5f, 0x5d, 0x5b, 0x59, 0x57, 0x55, 0x53, 0x51
+	.db	0x4f, 0x4d, 0x4b, 0x49, 0x47, 0x45, 0x43, 0x41
+	.db	0x3f, 0x3d, 0x3b, 0x39, 0x37, 0x35, 0x33, 0x31
+	.db	0x2f, 0x2d, 0x2b, 0x29, 0x27, 0x25, 0x23, 0x21
+	.db	0x1f, 0x1d, 0x1b, 0x19, 0x17, 0x15, 0x13, 0x11
+	.db	0x0f, 0x0d, 0x0b, 0x09, 0x07, 0x05, 0x03, 0x01
+
+white_noise:  ; Contains all values 0-255, randomized
+	.db	0x7a, 0x1b, 0x50, 0xac, 0xa6, 0xf7, 0xf1, 0x82
+	.db	0x6d, 0xfc, 0x24, 0x5d, 0x6e, 0xe9, 0xd6, 0x74
+	.db	0x08, 0x8e, 0x28, 0xf6, 0x13, 0x22, 0xd3, 0xb1
+	.db	0x60, 0x5c, 0x67, 0x21, 0xca, 0x01, 0x72, 0x2f
+	.db	0xd8, 0xeb, 0x32, 0x3a, 0x88, 0x81, 0x83, 0x59
+	.db	0x7d, 0x5b, 0x2a, 0x87, 0x5f, 0x99, 0x96, 0x09
+	.db	0xef, 0xd5, 0x2c, 0x17, 0x94, 0x8c, 0xff, 0xdd
+	.db	0x57, 0xe5, 0x0a, 0xf5, 0x10, 0xaf, 0x36, 0x2e
+	.db	0x4b, 0x35, 0xc4, 0xb0, 0xf0, 0x61, 0xab, 0x95
+	.db	0x18, 0x26, 0x9e, 0x7f, 0x33, 0x65, 0x9c, 0x70
+	.db	0xbf, 0xa7, 0x64, 0xc3, 0x1a, 0x31, 0xee, 0xc8
+	.db	0x14, 0x25, 0x76, 0xc6, 0x58, 0x52, 0x03, 0x9b
+	.db	0x1f, 0xdf, 0x0f, 0xc1, 0x42, 0x68, 0x27, 0xe0
+	.db	0x2b, 0x54, 0xd0, 0xfa, 0x4e, 0x93, 0xa5, 0xf2
+	.db	0x05, 0x3b, 0x1d, 0x02, 0xf8, 0xea, 0x45, 0x4a
+	.db	0x04, 0xcb, 0xf9, 0xc5, 0x7c, 0xe4, 0x48, 0x1c
+	.db	0xae, 0x75, 0xbe, 0xb4, 0x9f, 0xd9, 0x37, 0x11
+	.db	0x46, 0xcd, 0x3f, 0xe2, 0x9a, 0xe1, 0x9d, 0xb2
+	.db	0xc0, 0xb3, 0xa3, 0x77, 0x34, 0x80, 0xfd, 0x1e
+	.db	0xa1, 0xed, 0x07, 0x6c, 0x30, 0x6a, 0x69, 0x97
+	.db	0x23, 0xd7, 0x3e, 0xde, 0x4f, 0x79, 0x8b, 0x4d
+	.db	0xc2, 0xb6, 0x84, 0xa4, 0x66, 0xd1, 0xba, 0x0c
+	.db	0xf4, 0xbc, 0x8f, 0xd4, 0x40, 0xdb, 0xaa, 0xcf
+	.db	0x8a, 0x56, 0xad, 0x7b, 0x0e, 0x3c, 0xc7, 0x71
+	.db	0xfb, 0x49, 0x90, 0x98, 0x5e, 0xf3, 0x12, 0x38
+	.db	0x00, 0xe3, 0x0b, 0xec, 0x55, 0x39, 0x89, 0xbb
+	.db	0x78, 0x91, 0x15, 0x51, 0xe6, 0x47, 0x43, 0x0d
+	.db	0xa9, 0xb9, 0x6b, 0x62, 0x73, 0xa0, 0xdc, 0x2d
+	.db	0xe8, 0x63, 0xda, 0xd2, 0xfe, 0xc9, 0x29, 0xa2
+	.db	0x20, 0x8d, 0x53, 0xa8, 0x19, 0x4c, 0x6f, 0x86
+	.db	0xce, 0x92, 0x06, 0xe7, 0x7e, 0xb8, 0x5a, 0x3d
+	.db	0xb5, 0x85, 0x44, 0x16, 0xb7, 0xcc, 0x41, 0xbd
+
-- 
2.43.0