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Hi all,
I am trying to make my first assembler program that handles interrupts. On
PB[6:0] I have som leds and on PA[7:6] i have two buttons. The leds goes
on with a logic one from the port and the buttons is in tri-state when not
pushed and goes to logic zero when pushed.
I just trying to get a binary counter to show up on the leds when i am
pushing the buttons but nothing happens.
Does anyone know what could be wrong?
Regards, Manne

Here is the code:

.include "tn26def.inc"

; Interrupt service vectors

.org $0000
        rjmp Reset
.org IOPINSaddr
        rjmp IntPins

; define registers
.def TIME=r16
.def TEMP=r17

; define constants
.equ PORTB_IO=$7f       ; pb[6:0] = output
.equ PORTA_IO=$00       ; pa[7:0] = input

Reset:
        ldi     TEMP, RAMEND    ; set stack pointer to RAMEND
        out     SP, TEMP        ; (SP is one byte on attiny26)

        ldi TEMP, PORTB_IO
        out DDRB, TEMP
        ldi TEMP, $00           ; all lights off
        out PORTB, TEMP

        ldi TEMP, PORTA_IO
        out DDRA, TEMP
        ldi TEMP, (1<<PA3) + (1<<PA6) + (1<<PA7)                ; enable
pullup resistors
        out PORTA, TEMP


        ; set up interrupts

        ldi TEMP, (1<<PCIE1)
        out GIMSK, TEMP ; enable individual interrupt PCIE1 ( PB[7:4],
PA[7:6], PA3 )
        ldi TIME, $00   ; start from 0

        sei

loop:
        rjmp loop


IntPins:
        inc TIME
        out PORTB, TIME
        reti