# The OS/K Team licenses this file to you under the MIT license.
# See the LICENSE file in the project root for more information.

Instruction encoding:

15             0 15             0
xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx
││└────────────┘ │└───┘└───┘└───┘
││    INSTR.     │ CND  FT1  FT2
││               │
LM               R

M       No more words
L       LOCK prefix
R       REP prefix
FT1     First operand format
FT2     Second operand format

Values for COND:
00000       (none)
00001       .C
00010       .O
00011       .Z .E
00100       .S
00101       .P
00110       .A
00111       .AE
01000       .B
01001       .BE
01010       .G
01011       .GE
01100       .L
01101       .LE
01110       .CXZ
01111       (reserved)
Highest (6th) bit of COND indicates negation

Fx values:
00000       (none)
00001       reg
00010       imm64

xxx00       [imm64]
xxx01       [reg+reg]                   code(reg)|code(reg)
xxx10       [reg+reg+imm16]             code(reg)|code(reg)     imm16
xxx11       [reg+reg*imm16+imm16]       code(reg)|code(reg)     imm16    imm16

Where xxx is:
001          8-bit access
010          16-bit access
011          32-bit access
100          64-bit access