X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/30ef1ae0e1d60f55aee401ad9741cb8d5a0feef0..f8fc136727e9a5259529a58e2a2ada1c93d0dd17:/rom.asm?ds=sidebyside diff --git a/rom.asm b/rom.asm deleted file mode 100644 index 0c25fab..0000000 --- a/rom.asm +++ /dev/null @@ -1,73 +0,0 @@ - SECTION "a",HOME - -main: - ld c, $51 ; Note that we are alive. - ld a, $FF - ld [c],a - - ld sp, $DFF0 - - ld hl, $DF81 - ld a, $80 - ld [hl], a - - ld c, $07 - ld a, $04 ;start timer, 4.096KHz - ld [c], a -;diqs: ei -; ld a, $80 -; ld c, $51 -; ld [c], a -; jr diqs - call irqhand - ei -coqs: jr coqs - - section "Diq", HOME[$38] -fuqed: - di - jr fuqed - - section "fuq",HOME[$100] -irqhand: - PUSH AF - PUSH BC - PUSH DE - PUSH HL - - xor a - ld c, $0F ; ack the irq - ld [c], a - - ld a, $41 ; print A - call putc - - ld hl, $DF81 - ld a, [hl] - ld b, 1 - add b - ld c, $51 - ld [c], a - ld [hl], a - - - POP HL - POP DE - POP BC - POP AF - RETI - db $18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE - db $18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE - db $18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE,$18,$FE - -putc: - ld b, 0 - ld c, $50 - push af -.waitport: - ld a,[c] - cp b - jr nz,.waitport - pop af - ld [c],a - ret diff --git a/rom.asm b/rom.asm new file mode 120000 index 0000000..2dfb2b3 --- /dev/null +++ b/rom.asm @@ -0,0 +1 @@ +bootrom.asm \ No newline at end of file