RedPower CPU Instruction Table

x0

x1

x2

x3

x4

x5

x6

x7

x8

x9

xA

xB

xC

xD

xE

xF

0x

1x

2x

3x

4x

5x

6x

7x

8x

9x

Ax

Bx

Cx

Dx

Ex

Fx

Key: 6502 Base Instructions 65C02 Instructions 65C816 Instructions 65EL02 Instructions

An assembler is available here: ACME for RedPower.

Instruction Listing

Standard 6502 Instructions

Arithmetic

ADC	Add with carry	N,V,Z,C
CMP	Compare accumulator	N,Z,C
CPX	Compare X register	N,Z,C
CPY	Compare Y register	N,Z,C
DEC	Decrement memory location	N,Z
DEX	Decrement X register	N,Z
DEY	Decrement Y register	N,Z
SBC	Subtract with carry	N,V,Z,C

Load/Store

LDA	Load accumulator	N,Z
LDX	Load X register	N,Z
LDY	Load Y register	N,Z
STA	Store accumulator
STX	Store X register
STY	Store Y register
TAX	Transfer accumulator to X	N,Z
TAY	Transfer accumulator to Y	N,Z
TSX	Transfer stack pointer to X	N,Z
TXA	Transfer X to accumulator	N,Z
TXS	Transfer X to stack pointer	N,Z
TYA	Transfer Y to accumulator	N,Z

Logical

AND	Logical AND	N,Z
ASL	Arithmatic shift left	N,Z,C
BIT	Bit test	N,V,Z
BIT #	Bit test immediate	Z
EOR	Exclusive OR	N,Z
LSR	Logical shift right	N,Z,C
ORA	Logical OR	N,Z
ROL	Rotate left	N,Z,C
ROR	Rotate left	N,Z,C

Branching

BCC	Branch if carry flag clear
BCS	Branch if carry flag set
BEQ	Branch if zero flag set
BMI	Branch if negative flag set
BNE	Branch if zero flag clear
BPL	Branch if negative flag clear
BVC	Branch if overflow flag clear
BVS	Branch if overflow flag set
BRA	Branch always

Jumps and Calls

JMP	Jump
JSR	Jump saving return
RTS	Return from subroutine
RTI	Return from interrupt	All

Flag Manipulation

CLC	Clear carry flag	C
CLD	Clear decimal flag	D
CLI	Clear interrupt disable flag	I
CLV	Clear overflow flag	V
SEC	Set carry flag	C
SED	Set decimal flag	D
SEI	Set interrupt disable flag	I

System

BRK	Force an interrupt	B
NOP	No operation

Stack Operations

PHA	Push accumulator on stack
PHP	Push processor status on stack
PHX	Push X register on stack
PHY	Push Y register on stack
PLA	Pull accumulator from stack	N,Z
PLP	Pull processor status from stack	All
PLX	Pull X register from stack	N,Z
PLY	Pull Y register from stack	N,Z

65C02 Instructions

STZ	Store 0
TRB	Test and Reset Bits	Z
TSB	Test and Set Bits	Z
STP	Halt and Catch Fire
WAI	Wait for Interrupt

65C816 Instructions

PEA	Push effective address
PEI	Push effective indirect address
PER	Push effective relative address
REP	Reset Flags	All
SEP	Set Flags	All
TXY	Transfer X to Y	N,Z
TYX	Transfer Y to X	N,Z
XBA	Exchange A bytes
XCE	Exchange C and E flags	C,E

65EL02 Instructions

ENT	Enter word, RHI, I=PC+2, PC=(PC)
NXA	Next word into A, A=(I), I=I+1/I=I+2
NXT	Next word, PC=(I), I=I+2
TXR	Transfer X to R	N,Z
TRX	Transfer R to X	N,Z
TXI	Transfer X to I	N,Z
TIX	Transfer I to X	N,Z
RHA	Push accumulator to R stack
RLA	Pull accumulator from R stack	N,Z
RHX	Push X register to R stack
RLX	Pull X register from R stack	N,Z
RHY	Push Y register to R stack
RLY	Pull Y register from R stack	N,Z
RHI	Push I register to R stack
RLI	Pull I register from R stack	N,Z
RER	Push effective relative address to R stack
MMU	Prefix for MMU manipulation

Math Extensions

MUL	Signed multiply A into D:A	N,Z,O
DIV	Signed divide D:A, quotient in A, remainder in D	N,Z,O
ZEA	Zero extend A into D:A
SEA	Sign extend A into D:A
TAD	Transfer A to D	N,Z
TDA	Transfer D to A	N,Z
PHD	Push D register on stack
PLD	Pull D register from stack	N,Z