Byte	0		1		2	3	4	5
halt	0	0
nop	1	0
rrmovl rA, rB	2	0	rA	rB
irmovl V, rB	3	0	F	rB	V
rmmovl rA, D(rB)	4	0	rA	rB	D
mrmovl D(rB), rA	5	0	rA	rB	D
OP1 rA, rB	6	fn	rA	rB
jXX Dest	7	fn	Dest
cmovXX rA, rB	2	fn	rA	rB
call Dest	8	0	Dest
ret	9	0
pushl rA	A	0	rA	F
popl rA	B	0	rA	F