class rd16
XX ii		XYZ	#imm8
XX+10 dd		pg0addr
XX+20 hh ll		extaddr
XX+30 ee ff		off16,X
XX+40 ff		off8,X
XX+50			,X
9E XX+40 ff		off8,SP
9E XX+30 ee ff		off16,SP
SUB=A0 CMP=A1 SBC=A2 CPX=A3 AND=A4 BIT=A5
LDA=A6 EOR=A8 ADC=A9 ORA=AA ADD=AB LDX=AE

class wr16
XX dd		XYZ	pg0addr
XX+10 hh ll		extaddr
XX+20 ee ff		off16,X
XX+30 ff		off8,X
XX+40			,X
9E XX+30 ff		off8,SP
9E XX+20 ee ff		off16,SP
STA=B7 STX=BF

class imm8
XX ii		XYZ	#imm8
AIS=A7 AIX=AF

class rw8ax
XX dd		XYZ	pg0addr
XX+10			A
XX+20			X
XX+30 ff		off8,X
XX+40			,X
9E XX+30 ff		off8,SP
NEG=30 COM=33 LSR=34 ROR=36 ASR=37 ASL=38
LSL=38 ROL=39 DEC=3A INC=3C TST=3D

class branch
XX rr		XYZ	rel
BRA=20 BRN=21 BHI=22 BLS=23 BNE=26 BEQ=27
BCC/BHS=24 BCS/BLO=25 BHCC=28 BHCS=29
BPL=2A BMI=2B BMC=2C BMS=2D BIL=2E BIH=2F
BGE=90 BLT=91 BGT=92 BLE=93
BSR=AD

class jump
XX dd		XYZ	pg0addr
XX+10 hh ll		extaddr
XX+20 ee ff		off16,X
XX+30 ff		off8,X
XX+40			,X
JMP=BC JSR=BD

class bitop
XX+oo dd	XYZ	bitnum,pg0addr
BCLR=11 BSET=10

class bitbranch
XX+oo dd rr	XYZ	bitnum,pg0addr,rel
BRCLR=01 BRSET=00

class ahx
XX		XYZ	A
XX+04			H
XX+02			X
PSH=87 PUL=86

class inherent
XX		XYZ
CLC=98 CLI=9A DAA=72 DIV=52 MUL=42 NOP=9D NSA=62 RSP=9C
RTI=80 RTS=81 SEC=99 SEI=9B SWI=83 TAP=84 TAX=97 TPA=85
TSX=95 TXA=9F TXS=94
STOP=8E WAIT=8F

class imm16
XX ii jj	XYZ	#imm16
XX+10 dd		pg0addr
CPHX=65 LDHX=45

class cbeq
31 dd rr	XYZ	pg0addr,rel
41 ii rr		A,#imm8,rel
51 ii rr		X,#imm8,rel
61 ff rr		off8,X+,rel
71 rr			,X+,rel
9E 61 ff rr		off8,SP,rel

class clr
3F dd		CLR	pg0addr
4F			A
5F			X
6F ff			off8,X
7F			,X
9E 6F ff		off8,SP
8C			H

class dbnz
3B dd rr	DBNZ	pg0addr,rel
4B rr			A,rel
5B rr			X,rel
6B ff rr		off8,X,rel
7B rr			,X,rel
9E 6B ff rr		off8,SP,rel

class mov
4E dd dd	MOV	pg0addr,pg0addr
5E dd			pg0addr,X+
6E ii dd		#imm8,pg0addr
7E dd			,X+,pg0addr

class sthx
35 dd		STHX	pg0addr