mirror of
https://github.com/uffejakobsen/acme.git
synced 2024-11-29 19:50:12 +00:00
163 lines
6.8 KiB
Plaintext
163 lines
6.8 KiB
Plaintext
|
|
||
|
65ce02 opcode table
|
||
|
|
||
|
There are no more undocumented opcodes.
|
||
|
All differences to the r65c02 are marked using '+' or '!' signs:
|
||
|
'!' marks (backward-compatible) changes to existing instructions.
|
||
|
'+' marks new instructions.
|
||
|
|
||
|
|
||
|
00 brk 01 ora (zp, x) 02+ cle 03+ see
|
||
|
04 tsb zp 05 ora zp 06 asl zp 07 rmb0 zp
|
||
|
08 php 09 ora #imm8 0a asl 0b+ tsy
|
||
|
0c tsb abs16 0d ora abs16 0e asl abs16 0f bbr0 zp, rel8
|
||
|
10 bpl rel8 11 ora (zp), y 12! ora (zp), z 13+ bpl rel16
|
||
|
14 trb zp 15 ora zp, x 16 asl zp, x 17 rmb1 zp
|
||
|
18 clc 19 ora abs16, y 1a inc 1b+ inz
|
||
|
1c trb abs16 1d ora abs16, x 1e asl abs16, x 1f bbr1 zp, rel8
|
||
|
|
||
|
20 jsr abs16 21 and (zp, x) 22+ jsr (abs16) 23+ jsr (abs16, x)
|
||
|
24 bit zp 25 and zp 26 rol zp 27 rmb2 zp
|
||
|
28 plp 29 and #imm8 2a rol 2b+ tys
|
||
|
2c bit abs16 2d and abs16 2e rol abs16 2f bbr2 zp, rel8
|
||
|
30 bmi rel8 31 and (zp), y 32! and (zp), z 33+ bmi rel16
|
||
|
34 bit zp, x 35 and zp, x 36 rol zp, x 37 rmb3 zp
|
||
|
38 sec 39 and abs16, y 3a dec 3b+ dez
|
||
|
3c bit abs16, x 3d and abs16, x 3e rol abs16, x 3f bbr3 zp, rel8
|
||
|
|
||
|
40 rti 41 eor (zp, x) 42+ neg 43+ asr
|
||
|
44+ asr zp 45 eor zp 46 lsr zp 47 rmb4 zp
|
||
|
48 pha 49 eor #imm8 4a lsr 4b+ taz
|
||
|
4c jmp abs16 4d eor abs16 4e lsr abs16 4f bbr4 zp, rel8
|
||
|
50 bvc rel8 51 eor (zp), y 52! eor (zp), z 53+ bvc rel16
|
||
|
54+ asr zp, x 55 eor zp, x 56 lsr zp, x 57 rmb5 zp
|
||
|
58 cli 59 eor abs16, y 5a phy 5b+ tab
|
||
|
5c+ aug 5d eor abs16, x 5e lsr abs16, x 5f bbr5 zp, rel8
|
||
|
|
||
|
60 rts 61 adc (zp, x) 62+ rtn #imm8 63+ bsr rel16
|
||
|
64! stz zp 65 adc zp 66 ror zp 67 rmb6 zp
|
||
|
68 pla 69 adc #imm8 6a ror 6b+ tza
|
||
|
6c jmp (abs16) 6d adc abs16 6e ror abs16 6f bbr6 zp, rel8
|
||
|
70 bvs rel8 71 adc (zp), y 72! adc (zp), z 73+ bvs rel16
|
||
|
74! stz zp, x 75 adc zp, x 76 ror zp, x 77 rmb7 zp
|
||
|
78 sei 79 adc abs16, y 7a ply 7b+ tba
|
||
|
7c jmp (abs16, x) 7d adc abs16, x 7e ror abs16, x 7f bbr7 zp, rel8
|
||
|
|
||
|
80 bra rel8 81 sta (zp, x) 82+ sta (o8, s), y 83+ bra rel16
|
||
|
84 sty zp 85 sta zp 86 stx zp 87 smb0 zp
|
||
|
88 dey 89 bit #imm8 8a txa 8b+ sty abs16, x
|
||
|
8c sty abs16 8d sta abs16 8e stx abs16 8f bbs0 zp, rel8
|
||
|
90 bcc rel8 91 sta (zp), y 92! sta (zp), z 93+ bcc rel16
|
||
|
94 sty zp, x 95 sta zp, x 96 stx zp, y 97 smb1 zp
|
||
|
98 tya 99 sta abs16, y 9a txs 9b+ stx abs16, y
|
||
|
9c! stz abs16 9d sta abs16, x 9e! stz abs16, x 9f bbs1 zp, rel8
|
||
|
|
||
|
a0 ldy #imm8 a1 lda (zp, x) a2 ldx #imm8 a3+ ldz #imm8
|
||
|
a4 ldy zp a5 lda zp a6 ldx zp a7 smb2 zp
|
||
|
a8 tay a9 lda #imm8 aa tax ab+ ldz abs16
|
||
|
ac ldy abs16 ad lda abs16 ae ldx abs16 af bbs2 zp, rel8
|
||
|
b0 bcs rel8 b1 lda (zp), y b2! lda (zp), z b3+ bcs rel16
|
||
|
b4 ldy zp, x b5 lda zp, x b6 ldx zp, y b7 smb3 zp
|
||
|
b8 clv b9 lda abs16, y ba tsx bb+ ldz abs16, x
|
||
|
bc ldy abs16, x bd lda abs16, x be ldx abs16, y bf bbs3 zp, rel8
|
||
|
|
||
|
c0 cpy #imm8 c1 cmp (zp, x) c2+ cpz #imm8 c3+ dew zp
|
||
|
c4 cpy zp c5 cmp zp c6 dec zp c7 smb4 zp
|
||
|
c8 iny c9 cmp #imm8 ca dex cb+ asw abs16
|
||
|
cc cpy abs16 cd cmp abs16 ce dec abs16 cf bbs4 zp, rel8
|
||
|
d0 bne rel8 d1 cmp (zp), y d2! cmp (zp), z d3+ bne rel16
|
||
|
d4+ cpz zp d5 cmp zp, x d6 dec zp, x d7 smb5 zp
|
||
|
d8 cld d9 cmp abs16, y da phx db+ phz
|
||
|
dc+ cpz abs16 dd cmp abs16, x de dec abs16, x df bbs5 zp, rel8
|
||
|
|
||
|
e0 cpx #imm8 e1 sbc (zp, x) e2+ lda (o8, s), y e3+ inw zp
|
||
|
e4 cpx zp e5 sbc zp e6 inc zp e7 smb6 zp
|
||
|
e8 inx e9 sbc #imm8 ea nop eb+ row abs16
|
||
|
ec cpx abs16 ed sbc abs16 ee inc abs16 ef bbs6 zp, rel8
|
||
|
f0 beq rel8 f1 sbc (zp), y f2! sbc (zp), z f3+ beq rel16
|
||
|
f4+ phw #imm16 f5 sbc zp, x f6 inc zp, x f7 smb7 zp
|
||
|
f8 sed f9 sbc abs16, y fa plx fb+ plz
|
||
|
fc+ phw abs16 fd sbc abs16, x fe inc abs16, x ff bbs7 zp, rel8
|
||
|
|
||
|
|
||
|
#imm8: 8-bit immediate value
|
||
|
#imm16: 16-bit immediate value (only for opcode f4)
|
||
|
zp: 8-bit zeropage address
|
||
|
abs16: 16-bit absolute address
|
||
|
rel8: 8-bit relative address offset
|
||
|
rel16: 16-bit relative address offset
|
||
|
o8: 8-bit offset (for stack-relative addressing, see opcodes 82 and e2)
|
||
|
|
||
|
|
||
|
The 65ce02 is a superset of the r65c02. It has several improvements:
|
||
|
|
||
|
new Z register
|
||
|
--------------
|
||
|
The "stz" mnemonic no longer means "store zero", but "store Z register"
|
||
|
(see opcodes 64, 74, 9c, 9e)
|
||
|
The "(zp)" addressing mode now becomes "(zp), z"
|
||
|
(see opcodes 12, 32, 52, 72, 92, b2, d2, f2)
|
||
|
Z defaults to zero after reset, so these changes are backward compatible
|
||
|
until Z is loaded with a non-zero value.
|
||
|
New instructions for this register:
|
||
|
1b inz increment Z
|
||
|
3b dez decrement Z
|
||
|
4b taz transfer A to Z
|
||
|
6b tza transfer Z to A
|
||
|
a3 ldz #imm8
|
||
|
ab ldz abs16
|
||
|
bb ldz abs16, x
|
||
|
c2 cpz #imm8
|
||
|
d4 cpz zp
|
||
|
db phz push Z
|
||
|
dc cpz abs16
|
||
|
fb plz pull Z
|
||
|
|
||
|
16-bit stack pointer
|
||
|
--------------------
|
||
|
02 cle clear stack extend disable
|
||
|
03 see set stack extend disable
|
||
|
0b tsy transfer stack_ptr_high to Y
|
||
|
2b tys transfer Y to stack_ptr_high
|
||
|
|
||
|
16-bit branches
|
||
|
---------------
|
||
|
13 bpl rel16
|
||
|
33 bmi rel16
|
||
|
53 bvc rel16
|
||
|
63 bsr rel16 relative jsr, "branch to subroutine"
|
||
|
73 bvs rel16
|
||
|
83 bra rel16 relative jmp
|
||
|
93 bcc rel16
|
||
|
b3 bcs rel16
|
||
|
d3 bne rel16
|
||
|
f3 beq rel16
|
||
|
To use these in ACME, use the mnemonics lbpl, lbmi, lbvc, ...
|
||
|
(except for "bsr", because there is no 8-bit version of it anyway)
|
||
|
|
||
|
new addressing modes for existing instructions
|
||
|
----------------------------------------------
|
||
|
22 jsr (abs16)
|
||
|
23 jsr (abs16, x)
|
||
|
82 sta (offset8, s), y
|
||
|
8b sty abs16, x
|
||
|
9b stx abs16, y
|
||
|
e2 lda (offset8, s), y
|
||
|
|
||
|
new instructions
|
||
|
----------------
|
||
|
42 neg negate A
|
||
|
43 asr
|
||
|
44 asr zp
|
||
|
54 asr zp, x
|
||
|
5b tab
|
||
|
5c aug "4-byte NOP reserved for future expansion"
|
||
|
62 rtn #imm8
|
||
|
7b tba
|
||
|
c3 dew zp
|
||
|
cb asw abs16
|
||
|
e3 inw zp
|
||
|
eb row abs16
|
||
|
f4 phw #imm16
|
||
|
fc phw abs16
|