M68000 Instruction Set Summary

Below is a summary of all the instructions explained in the document Sega Megadrive Programming Basics. This list is not exhausive, and many more different instructions also exist. Details of these can be found in the M68000 Programmer's Reference.

ADD	Add source to destination
ADDA	Add source to address register
ADDI	Add immediate to destination
AND	AND source with destination
ANDI	AND immediate source with destination
BEQ	Branch if equal
BGE	Branch if greater than or equal to
BLE	Branch if less than or equal to
BNE	Branch if not equal
BRA	Branch to relative address
BSR	Branch to subroutine using relative address
CLR	Clear destination
CMP	Compate source with destination
CMPI	Compare immediate immediate source with destination
DBRA	Decrement data register and branch
DIVS	Divide (signed) destination by source
DIVU	Divide (unsigned) destination by source
EOR	Exclusive OR source with destination
EORI	Exclusive OR immediate source with destination
JMP	Jump to definate address
JSR	Jump to suroutine using definate address
LEA	Load effective address into an address register
MOVE	Move data from source to destination
MOVEM	Move multple data from sources to destinations
MOVEQ	Move one byte of data quickly
MULS	Multiply (signed) destination by source
MULU	Multiply (unsigned) destination by source
NEG	Make Destination a negative
NOP	No Operation
NOT	Invert Destination
OR	OR source with destination
ORI	OR immediate source with destination
RTS	Return from subroutine
SUB	Sutract source from destination
SUBA	Subtract source from address register
SUBI	Subtract immediate from destination
TST	Test destination for zero or negative