54 lines
1.2 KiB
Plaintext
54 lines
1.2 KiB
Plaintext
# The OS/K Team licenses this file to you under the MIT license.
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# See the LICENSE file in the project root for more information.
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Instruction encoding:
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15 0 15 0
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xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx
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││└────────────┘ │└───┘└───┘└───┘
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││ INSTR. │ CND FT1 FT2
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││ │
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LM R
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M No more words
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L LOCK prefix
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R REP prefix
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FT1 First operand format
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FT2 Second operand format
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Values for COND:
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00000 (none)
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00001 .C
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00010 .O
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00011 .Z .E
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00100 .S
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00101 .P
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00110 .A
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00111 .AE
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01000 .B
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01001 .BE
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01010 .G
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01011 .GE
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01100 .L
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01101 .LE
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01110 .CXZ
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01111 (reserved)
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Highest (6th) bit of COND indicates negation
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Fx values:
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00000 (none)
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00001 reg
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00010 imm64
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xxx00 [imm64]
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xxx01 [reg+reg] code(reg)|code(reg)
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xxx10 [reg+reg+imm16] code(reg)|code(reg) imm16
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xxx11 [reg+reg*imm16+imm16] code(reg)|code(reg) imm16 imm16
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Where xxx is:
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001 8-bit access
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010 16-bit access
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011 32-bit access
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100 64-bit access
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