68000 ASM-to-Hex Code Reference
From Sonic Retro
(Document originally by Ambil)
Welcome to my Motorola 68000 programming reference. It consists a table containing useful examples of the 68k instructions, and it can be a very nice tool for everyone who is hacking MegaDrive / Genesis games in a hex editor. For your help and confort, the parameters in the ASM commands have been coloured along with their respective places in the 16-bit instruction codes.
ASM | Binary instruction | Hex code |
---|---|---|
Adda.w (a0), a1 | 1101 0010 1101 0000 | D2D0 |
Adda.w ($FFFFF100) w, a1 | 1101 0010 1111 1000 | D2F8 F100 |
Adda.l ($FFFFF100).l, a1 | 1101 0011 1111 1001 | D3F9 F100 |
Adda.w#$1337, a1 | 1101 0010 1111 1100 | D2FC 1337 |
Addi.b #$20, d1 | 0000 0110 0000 0001 | 0601 0020 |
Addi.w #$1337, ($FFFFF100).w | 0000 0110 0111 1000 | 0678 1337 F100 |
Addi.l #$19650917,
($FFFFF100).l |
0000 0110 1011 1001 | 06F9 1965 0917 F100 |
Addq.b #1, ($FFFFF100).w | 0101 0010 0011 1000 | 5238 F100 |
Addq.b #2, ($FFFFF100).w | 0101 0100 0011 1000 | 5438 F100 |
Addq.b #8, ($FFFFF100).w | 0101 0000 0011 1000 | 5038 F100 |
Andi.b #$36, d1 | 0000 0010 0000 0001 | 0201 0036 |
Andi.w #$2005, ($FFFFF100).w | 0000 0010 0111 1000 | 0238 2005 F100 |
Bra.s #$24 | 0110 0000 0010 0100 | 6024 |
Bra #$4E1A | 0110 0000 0000 0000 | 6000 4E1A |
Bsr.s #$10 | 0110 0001 0001 0000 | 6110 |
Bhi.s #$10 | 0110 0010 0001 0000 | 6210 |
Bls.s #$10 | 0110 0011 0001 0000 | 6310 |
Bcc.s #$10 | 0110 0100 0001 0000 | 6410 |
Bcs.s #$10 | 0110 0101 0001 0000 | 6510 |
Bne.s #$10 | 0110 0110 0001 0000 | 6610 |
Beq.s #$10 | 0110 0111 0001 0000 |
6710 |
Bvc.s #$10 | 0110 1000 0001 0000 | 6810 |
Bvs.s #$10 | 0110 1001 0001 0000 | 6910 |
Bpl.s #$10 | 0110 1010 0001 0000 | 6A10 |
Bmi.s #$10 |
0110 1011 0001 0000 |
6B10 |
Bge.s #$10 | 0110 1100 0001 0000 | 6C10 |
Blt.s #$10 | 0110 1101 0001 0000 | 6D10 |
Bgt.s #$10 | 0110 1110 0001 0000 | 6E10 |
Ble.s #$10 | 0110 1111 0001 0000 | 6F10 |
Clr.l d0 | 0100 0010 1000 0000 | 4280 |
Clr.w ($FFFF4500).w | 0100 0010 0111 1000 | 4278 4500 |
Cmpi.b #$26, ($FFFFFFE4).w | 0000 1100 0011 1000 | 0C38 0026 FFE4 |
Cmpi.w #$4170, ($FFFFFFB0).w | 0000 1100 0111 1000 | 0C78 4170 FFB0 |
Cmpi.l #$0, d2 | 0000 1100 1000 0010 | 0C82 0000 0000 |
Dbf.w d0, $556A | 0101 0001 1100 0000 | 51C0 556A |
Divs.w #$A, d0 | 1000 0001 1111 1100 | 81FC 000A |
Divu.w ($FFFFF314).w, d1 | 1000 0010 1111 1000 | 82F8 F314 |
Eori.b #$80, ($FFFFF00E).w | 0000 1010 0011 1000 | 0A38 0080 F00E |
Eori.w #$3119, ($FFFFF010).w | 0000 1010 0111 1000 | 0A78 3119 F010 |
Eori.l #$FFFF, (a0) | 0000 1010 1001 0000 | 0A90 FFFF |
Exg d 1, d 2 | 1100 0011 0100 0010 | C342 |
Exg a 3, a 4 | 1100 0111 0100 1100 | C74C |
Exg d 5, a 6 | 1100 1011 1000 1110 | CB8E |
Ext.w d0 | 0100 1000 1000 0000 | 4880 |
Ext.l d1 | 0100 1000 1100 0001 | 48C1 |
Illegal | 0100 1010 1111 1100 | 4AFC |
Jmp (a 1) | 0100 1110 1100 0001 | 4EA1 |
Jmp $65A70 | 0100 1110 1111 1001 | 4EF9 0006 5A70 |
Jsr $4B98C | 0100 1110 1011 1001 | 4EB9 0004 B98C |
Lea.l ($FFFFFFF4).w, a0 | 0100 0001 1111 1000 | 41F8 FFF4 |
Link.w a4, #$1087 | 0100 1110 0101 0100 | 4E54 1087 |
Lsl.b# 1, d0 | 1110 0011 0000 1001 | E309 |
Lsr.wd 2, d1 | 1110 0100 0110 1010 | E54A |
Move.b #$64, ($FFFFFFE0).w | 0001 0001 1111 1100 | 11FC 0064 FFE0 |
Move.w #$03E8, ($FFFFFFE0).w | 0011 0001 1111 1100 | 31FC 03E8 FFE0 |
Move.l #$05F5E100, ($FFFFFFE0).l | 0010 0001 1111 1100 | 21FC 05F5 E100 FFE0 |
Move.b #$20, d1 | 0001 0010 0011 1100 | 123C 0020 |
Move.w ($FFFF01A5).w, ($FFFFFFE0).w | 0011 0011 1111 1001 | 33F9 01A5 FFE0 |
Move.l d1, ($FFFFFFE0).w | 0010 0011 1100 0001 | 23C1 FFE0 |
Movea.w #$6000, a4 | 0011 1000 0111 1100 | 387C 6000 |
Moveq.l #$80, d1 | 0111 0010 1000 0000 | 7280 |
Muls.w #$19, d1 | 1100 0011 1111 1100 | E3FC 0019 |
Mulu.w #$19, d2 | 1100 0100 1111 1100 | E4FC 0019 |
Neg.w ($FFFFFE26).w | 0100 0100 0111 1000 | 4478 FE26 |
Neg.l d0 | 0100 0100 1000 0000 | 4480 |
Nop | 0100 1110 0111 0001 | 4E71 |
Not.w ($FFFFFE26).w | 0100 0110 0111 1000 | 4678 FE26 |
Not.l d0 | 0100 0110 1000 0000 | 4680 |
Ori.b #$36, d1 | 0000 0000 0000 0001 | 0001 0036 |
Ori.w #$2005, ($FFFFF100).w | 0000 0000 0111 1000 | 0074 2005 F100 |
Pea ($FFFFE53C).w | 0100 1000 0111 1000 | 4878 E53C |
Rol.wd 0, d1 | 1110 0001 0111 1001 | E1E9 |
Ror.l #1, d3 | 1110 0010 1001 1011 | E6EA |
Rol.w ($FFFFFFE0).w | 1110 0111 1111 1000 | E7F8 FFE0 |
Rtr | 0100 1110 0111 0111 | 4E77 |
Rts | 0100 1110 0111 0101 | 4E75 |
St.b ($FFFFF000).w | 0101 0000 1111 1000 | 50F0 F000 |
Sf.b ($FFFFF000).w | 0101 0001 1111 1000 | 51F0 F000 |
Shi.b ($FFFFF000).w | 0101 0010 1111 1000 | 52F0 F000 |
Sls.b ($FFFFF000).w | 0101 0011 1111 1000 | 53F0 F000 |
Scc.b ($FFFFF000).w | 0101 0100 1111 1000 | 54F0 F000 |
Scs.b ($FFFFF000).w | 0101 0101 1111 1000 | 55F0 F000 |
Sne.b ($FFFFF000).w | 0101 0110 1111 1000 | 56F0 F000 |
Seq.b ($FFFFF000).w | 0101 0111 1111 1000 | 57F0 F000 |
Svc.b ($FFFFF000).w | 0101 1000 1111 1000 | 58F0 F000 |
Svs.b ($FFFFF000).w | 0101 1001 1111 1000 | 59F0 F000 |
Spl.b ($FFFFF000).w | 0101 1010 1111 1000 | 5AF0 F000 |
Smi.b ($FFFFF000).w | 0101 1011 1111 1000 | 5BF0 F000 |
Sge.b ($FFFFF000).w | 0101 1100 1111 1000 | 5CF0 F000 |
Slt.b ($FFFFF000).w |
0101 1101 1111 1000 |
5DF0 F000 |
Sgt.b ($FFFFF000).w | 0101 1110 1111 1000 | 5EF0 F000 |
Sle.b ($FFFFF000).w | 0101 1111 1111 1000 | 5FF0 F000 |
Suba.w (a0), a1 | 1101 0010 1101 0001 | D2D1 |
Suba.w ($FFFFF100).w, a2 | 1101 0100 1111 1000 | D2F8 F100 |
Suba.l ($FFFFF100).l, a3 | 1001 1011 1111 1001 | D3F9 F100 |
Suba.w #$1337, a4 | 1001 1100 1111 1100 | D2FC 1337 |
Subi.b #$20, d1 | 0000 0100 0000 0001 | 0601 0020 |
Subi.w #$1337, ($FFFFF100).w | 0000 0100 0111 1000 | 0678 1337 F100 |
Subi.l #$19650917,
($FFFFF100).l |
0000 0100 1111 1001 | 06F9 1965 0917 F100 |
Subq.b #1, ($FFFFF100).w | 0101 0011 0011 1000 | 5238 F100 |
Subq.b #2, ($FFFFF100).w | 0101 0101 0011 1000 | 5438 F100 |
Subq.b #8, ($FFFFF100).w | 0101 0001 0011 1000 | 5038 F100 |
Swap.w d0 | 0100 1000 0100 0000 | 4840 |
Tas.b ($FFFFFE00).w | 0100 1010 1111 1000 | 4AF8 FE00 |
Trap #1 | 0100 1110 0100 0001 | 4E41 |
Trapv | 0100 1110 0111 0110 | 4E76 |
Tst.ld1 | 0100 1010 1000 0001 | 4A81 |
Tst.w ($FFFFAA80).w | 0100 1010 0111 1000 | 4A78 AA80 |
Tst.b ($FFFFAA80).w | 0100 1010 0011 1000 | 4A38 AA80 |
Unlk a0 | 0100 1110 0101 1000 | 4E58 |