.segment "IRQFILE" ; simirq - simulate an irq (for cassette read) ; enter by a jsr simirq ; simirq php pla ;fix the break flag and #$ef pha ; puls - checks for real irq's or breaks ; puls pha txa pha tya pha tsx lda $104,x ;get old p status and #$10 ;break flag? beq puls1 ;...no jmp (cbinv) ;...yes...break instr puls1 jmp (cinv) ;...irq ; pcint - add universal to cinit ; pcint jsr cint p0010 lda vicreg+18 ;check raster compare for zero bne p0010 ;if it's zero then check value lda vicreg+25 ;get raster irq value and #$01 sta palnts ;place in pal/ntsc indicator jmp iokeys ; ; piokey - add universal to iokeys ; piokey lda #$81 ;enable t1 irq's sta d1icr lda d1cra and #$80 ;save only tod bit ora #%00010001 ;enable timer1 sta d1cra jmp clklo ;release the clock line***901227-03***