Mercurial > repos > blastem
view test.s68 @ 820:cf6149b7c6e5
Implement a tiny bit of CPM BDOS and add a corresponding Z80 core driver so that simple CPM programs like ZEXDOC/ZEXALL can be run against my Z80 core
author | Michael Pavone <pavone@retrodev.com> |
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date | Wed, 29 Jul 2015 00:05:21 -0700 |
parents | 3adbd97f71f2 |
children |
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dc.l $0, start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l start dc.l after dc.l after dc.l after dc.l after dc.l after dc.l after dc.l after dc.l after start: bra after after: abcd d0, d1 abcd -(a2), -(a3) add.b #42, d1 add.w d3, d4 add.l d5, (a0)+ addq.w #5, d0 addx d6, d7 addx -(a4), -(a5) and.w d5, d7 andi.l #5, (a0)+ andi #8, CCR andi #9, CCR foo: asl d0, d3 asr #3, d7 bne foo bchg #5, d0 bclr #7, d0 bset #1, d0 bsr bar btst #3, d0 chk.w #53, d7 clr d5 cmp d0, d1 bar: dbra d0, bar divs.w d5, d7 divu.w d3, d4 eor.w d0, d6 eori.l #5, d2 eori #5, ccr eori #2700, sr exg d5, d6 ext d2 illegal jmp (a0) jsr (a5) lea (a0, 8), a3 link.w a6, #32 lsl d0, d3 lsr #3, d7 move.b (a0)+, (32, a5) moveq #5, d0 move #89, ccr move sr, d0 move #2700, sr move a5, usp movem.l d0-d3/a4/a6, -(a7) movep.w d4, (40, a3) muls.w d6, d7 mulu.w d2, d4 nbcd -(a2) neg.l d7 negx.b d5 nop not.b d3 or.w d5, d7 ori.b #7, d5 ori #5, ccr ori #2700, sr pea (24, a3) reset rol.l #7, d0 rol.w d5, d0 ror.w d1, d3 roxl.l #7, d0 roxl.w d5, d0 roxr.w d1, d3 rte rtr rts sbcd d0, d1 sbcd -(a2), -(a3) slt d5 stop #3 sub.b #42, d1 sub.w d3, d4 sub.l d5, (a0)+ subq.w #5, d0 subx d6, d7 subx -(a4), -(a5) swap d6 tas (a3) trap #7 trapv tst.w (a4)+ unlk a6