.include "appnotes/tn26def.inc"

.def     Temp=R16
.def     Temp1=R17
.def     Temp2=R18
.def     Temp3=R19
.def     Temp4=R20

.cseg
.org 0

Reset:
ldi Temp, 0b11111111
out DDRB,Temp 
out DDRA,Temp
out PORTB,Temp
out PORTA,Temp