externe interrupts

das mit externen interrupts hat hier so funktioniert

;; (c) david vajda
;; 07/22/2022
;; externes interrupt

.include "m8def.inc"

.org 0x000
rjmp RESET
.org INT0addr
rjmp INT0hndlr
.org INT1addr
rjmp INT0hndlr

RESET:
ldi r16, HIGH (RAMEND)
out SPH, r16
ldi r16, LOW (RAMEND)
out SPL, r16

ldi r16, 0xff
out DDRB, r16
ldi r16, 0xff
out PORTB, r16


ldi r16, (1 << ISC11) | (1 << ISC10)
out MCUCR, r16

ldi r16, (1 << INT1) | (1 << INT0)
out GICR, r16

sei
main001: rjmp main001


INT0hndlr:
dec r16
out PORTB, r16
reti

INT1hndlr:
inc r16
out PORTB, r16
reti

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