# Opcodes and mnemonics of MIXAL.
# From the endpapers in Knuth.
# 
# A `-' in the mnemonic stands for any of the general
# registers (A, X, and 1 through 6).  The C value then
# is the opcode for register A; the other opcodes are
# at a constant offset for each register.
#
# C is the opcode, or `x' for directives.
#
# F is the default F value for operands ((0:5) if blank).
# 
# An `x' in `field?' means the operand to an intruction
# of the given type must NOT specify the F value, because
# F is hardwired.  
#
# OP	C	F	field?
#-----------------------------
nop	00	0
add	01
sub	02
mul	03
div	04
num	05	0	x
char	05	1	x
hlt	05	2	x
sla	06	0	x
sra	06	1	x
slax	06	2	x
srax	06	3	x
slc	06	4	x
src	06	5	x
move	07	1
ld-	08
ld-n	16
st-	24
stj	32	2
stz	33
jbus	34	0	
ioc	35	0
in	36	0
out	37	0
jred	38	0	
jmp	39	0	x
jsj	39	1	x
jov	39	2	x
jnov	39	3	x
jl	39	4	x
je	39	5	x
jg	39	6	x
jge	39	7	x
jne	39	8	x
jle	39	9	x
j-n	40	0	x
j-z	40	1	x
j-p	40	2	x
j-nn	40	3	x
j-nz	40	4	x
j-np	40	5	x
inc-	48	0	x
dec-	48	1	x
ent-	48	2	x
enn-	48	3	x
cmp-	56
orig	x
equ	x
alf	x
con	x
end	x