; season - junior
;
; author: hackbard@hackdaworld.dyndns.org
;


; at90s2313
; setup:
; vcc card --- vcc cam
; rst card --- rst cam --- atmel t0 (pd4)
; clk card --- clk cam --- atmel t1 (pd5)
; gnd card --- gnd cam --- atmel gnd
; i/o card --- atmel int0 (pd2)
; i/o cam  --- atmel int1 (pd3)

include "../include/2313def.inc"


;
; interrupt vectors:
;

; reset
rjmp INIT

; int0
rjmp REC_CARD

; int1
rjmp REC_CAM

; timer/counter capt 1
reti

; timer/counter compare
reti

; timer/counter overflow 1
rjmp T1_OVERFLOW

; timer/counter overflow 0
reti

; uart rx complete
reti

; uart data register empty
reti

; uart tx complete
reti

; analog comparator
reti

;
; init routine
;

INIT:

; set stackpointer
ldi r16,low(RAMEND)
out SPL,r16

; enable interrupts int0,int1
ldi r16,((1<<INT0)|(1<<INT1))
out GIMSK,r16
; int0/1 setup
ldi r16,((1<<ISC01)|(1<<ISC00)|(1<<ISC11)|(1<<ISC10))
out MCUCR,r16
sbis PORTD,PORTD2
cbi MCUCR,ISC00
sbis PORTD,PORTD3
cbi MCUCR,ISC10

; enable t/c overflow interrupt
sbi TIMSK,TOIE1
; setup t/c
ldi r16,((1<<CS12)|(1<<CS11)|(1<<CS10))
out TCCR1B,r16

; enable interrupts (global)
sei

;
; rec_card routine
;

REC_CARD:

; get port status
in .... continue here .. :)