#define __SFR_OFFSET 0
#include <avr/io.h>

.org 0x00
reset:
 jmp init_ports

;--------------------------------------------------------------------------------------------------
init_ports:
 ldi    r16,                    0x03                    ; Configure A[0,1] output, A[2,7] input
 out    _SFR_IO_ADDR(DDRA),     r16
 ldi    r16,                    0xFC                    ; Configure A[2,7] enable pull-ups
 out    _SFR_IO_ADDR(PORTA),    r16
 ldi    r16,                    0xFF                    ; Configure C[0,7] output
 out    _SFR_IO_ADDR(DDRC),     r16
 out    _SFR_IO_ADDR(PORTC),    r16

;--------------------------------------------------------------------------------------------------
init_program:
 ldi    r16,                    0x01                    ; Turn on first LED
 out    _SFR_IO_ADDR(PORTA),    r16

;--------------------------------------------------------------------------------------------------
main_loop:
 rjmp main_loop