270 lines
49 KiB
HTML
270 lines
49 KiB
HTML
<html><!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
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<title>80386 Programmer's Reference Manual -- Appendix A</title>
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</head>
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<body>
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<b>up:</b> <a href="APP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/APP.HTM">Appendices</a><br>
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<b>next:</b> <a href="APPB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/APPB.HTM">Appendix B -- Complete Flag Cross-Reference</a><br>
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<p>
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<hr>
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<p>
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<h1>Appendix A -- Opcode Map</h1>
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The opcode tables that follow aid in interpreting 80386 object code. Use the high-order four bits of the opcode as an index to a row of the opcode table; use the low-order four bits as an index to a column of the table. If the opcode is 0FH, refer to the two-byte opcode table and use the second byte of the opcode to index the rows and columns of that table.
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<h3>Key to Abbreviations</h3>
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Operands are identified by a two-character code of the form Zz. The first character, an uppercase letter, specifies the addressing method; the second character, a lowercase letter, specifies the type of operand.
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<h3>Codes for Addressing Method</h3>
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<dl>
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<dt>A
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<dd>Direct address; the instruction has no modR/M byte; the address of the operand is encoded in the instruction; no base register, index register, or scaling factor can be applied; e.g., far <a href="JMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JMP.HTM">JMP</a> (EA).
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<dt>C
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<dd>The reg field of the modR/M byte selects a control register; e.g., <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> (0F20, 0F22).
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<dt>D
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<dd>The reg field of the modR/M byte selects a debug register; e.g., <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> (0F21,0F23).
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<dt>E
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<dd>A modR/M byte follows the opcode and specifies the operand. The operand is either a general register or a memory address. If it is a memory address, the address is computed from a segment register and any of the following values: a base register, an index register, a scaling factor, a displacement.
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<dt>F
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<dd>Flags Register.
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<dt>G
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<dd>The reg field of the modR/M byte selects a general register; e.g., <a href="ADD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ADD.HTM">ADD</a> (00).
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<dt>I
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<dd>Immediate data. The value of the operand is encoded in subsequent bytes of the instruction.
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<dt>J
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<dd>The instruction contains a relative offset to be added to the instruction pointer register; e.g., <a href="JMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JMP.HTM">JMP</a> short, <a href="LOOP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LOOP.HTM">LOOP</a>.
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<dt>M
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<dd>The modR/M byte may refer only to memory; e.g., <a href="BOUND.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BOUND.HTM">BOUND</a>, <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LES</a>, <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LDS</a>, <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LSS</a>, <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LFS</a>, <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LGS</a>.
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<dt>O
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<dd>The instruction has no modR/M byte; the offset of the operand is coded as a word or double word (depending on address size attribute) in the instruction. No base register, index register, or scaling factor can be applied; e.g., <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> (A0-A3).
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<dt>R
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<dd>The mod field of the modR/M byte may refer only to a general register; e.g., <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> (0F20-0F24, 0F26).
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<dt>S
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<dd>The reg field of the modR/M byte selects a segment register; e.g., <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> (8C,8E).
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<dt>T
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<dd>The reg field of the modR/M byte selects a test register; e.g., <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> (0F24,0F26).
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<dt>X
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<dd>Memory addressed by DS:SI; e.g., <a href="MOVS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVS.HTM">MOVS</a>, <a href="CMPS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMPS.HTM">CMPS</a>, <a href="OUTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OUTS.HTM">OUTS</a>, <a href="LODS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LODS.HTM">LODS</a>, <a href="SCAS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SCAS.HTM">SCAS</a>.
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<dt>Y
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<dd>Memory addressed by ES:DI; e.g., <a href="MOVS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVS.HTM">MOVS</a>, <a href="CMPS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMPS.HTM">CMPS</a>, <a href="INS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INS.HTM">INS</a>, <a href="STOS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STOS.HTM">STOS</a>.
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</dl>
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<h3>Codes for Operant Type</h3>
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<dl>
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<dt>a
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<dd>Two one-word operands in memory or two double-word operands in memory, depending on operand size attribute (used only by <a href="BOUND.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BOUND.HTM">BOUND</a>)
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<dt>b
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<dd>Byte (regardless of operand size attribute)
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<dt>c
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<dd>Byte or word, depending on operand size attribute.
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<dt>d
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<dd>Double word (regardless of operand size attribute)
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<dt>p
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<dd>32-bit or 48-bit pointer, depending on operand size attribute.
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<dt>s
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<dd>Six-byte pseudo-descriptor
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<dt>v
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<dd>Word or double word, depending on operand size attribute.
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<dt>w
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<dd>Word (regardless of operand size attribute)
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</dl>
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<h3>Register Codes</h3>
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When an operand is a specific register encoded in the opcode, the register is identified by its name; e.g., AX, CL, or ESI. The name of the register indicates whether the register is 32-, 16-, or 8-bits wide. A register identifier of the form eXX is used when the width of the register depends on the operand size attribute; for example, eAX indicates that the AX register is used when the operand size attribute is 16 and the EAX register is used when the operand size attribute is 32.
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<h3>One-Byte Opcode Map</h3>
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<pre>
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0 1 2 3 4 5 6 7 8 9 A B C D E F
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+-----------------------------------------------------------+--------+--------+-----------------------------------------------------------+--------+--------+
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| <a href="ADD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ADD.HTM">ADD</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> | <a href="OR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OR.HTM">OR</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | 2-byte |
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0|---------+---------+---------+---------+---------+---------+ | +---------+---------+---------+---------+---------+---------+ | |
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| Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | ES | ES | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | CS | escape |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="ADC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ADC.HTM">ADC</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> | <a href="SBB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SBB.HTM">SBB</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> |
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1|---------+---------+---------+---------+---------+---------+ | +---------+---------+---------+---------+---------+---------+ | |
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| Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | SS | SS | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | DS | DS |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="AND.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AND.HTM">AND</a> | SEG | | <a href="SUB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SUB.HTM">SUB</a> | SEG | |
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2|---------+---------+---------+---------+---------+---------+ | <a href="DAA.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DAA.HTM">DAA</a> +---------+---------+---------+---------+---------+---------+ | <a href="DAS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DAS.HTM">DAS</a> |
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| Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | =ES | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | =CS | |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="XOR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/XOR.HTM">XOR</a> | SEG | | <a href="CMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMP.HTM">CMP</a> | SEG | |
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3|---------+---------+---------+---------+---------+---------+ | <a href="AAA.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AAA.HTM">AAA</a> +---------+---------+---------+---------+---------+---------+ | <a href="AAS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AAS.HTM">AAS</a> |
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| Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | =SS | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,Ib | eAX,Iv | =CS | |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="INC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INC.HTM">INC</a> general register | <a href="DEC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DEC.HTM">DEC</a> general register |
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4|---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> general register | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> into general register |
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5|---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| | | <a href="BOUND.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BOUND.HTM">BOUND</a> | <a href="ARPL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ARPL.HTM">ARPL</a> | SEG | SEG | Operand| Address| <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="IMUL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IMUL.HTM">IMUL</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="IMUL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IMUL.HTM">IMUL</a> | <a href="INS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INS.HTM">INSB</a> | <a href="INS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INS.HTM">INSW/D</a> | <a href="OUTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OUTS.HTM">OUTSB</a> |<a href="OUTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OUTS.HTM">OUTSW/D</a> |
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6| <a href="PUSHA.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSHA.HTM">PUSHA</a> | <a href="POPA.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POPA.HTM">POPA</a> | | | | | | | | | | | | | | |
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| | | Gv,Ma | Ew,Rw | =FS | =GS | Size | Size | Ib | GvEvIv | Ib | GvEvIv | Yb,DX | Yb,DX | Dx,Xb | DX,Xv |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| Short displacement jump of condition (Jb) | Short-displacement jump on condition(Jb) |
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7|---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JO</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNO</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JB</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNB</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JZ</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNZ</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JBE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNBE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JS</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNS</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JP</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNP</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JL</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNL</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JLE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNLE</a> |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| Immediate Grpl | | Grpl | <a href="TEST.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/TEST.HTM">TEST</a> | <a href="XCHG.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/XCHG.HTM">XCHG</a> | <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> | <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> | <a href="LEA.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LEA.HTM">LEA</a> | <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> |
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8|---------+---------+ | +---------+---------+--------+--------+---------+---------+---------+---------+ | | | |
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| Eb,Ib | Ev,Iv | | Ev,Iv | Eb,Gb | Ev,Gv | Eb,Gb | Ev,Gv | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | Ew,Sw | Gv,M | Sw,Ew | Ev |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| | <a href="XCHG.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/XCHG.HTM">XCHG</a> word or double-word register with eAX | | | <a href="CALL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CALL.HTM">CALL</a> | | <a href="PUSHF.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSHF.HTM">PUSHF</a> | <a href="POPF.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POPF.HTM">POPF</a> | | |
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9| <a href="NOP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/NOP.HTM">NOP</a> +---------+---------+---------+---------+---------+--------+--------+ <a href="CBW.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CBW.HTM">CBW</a> | <a href="CWD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CWD.HTM">CWD</a> | | <a href="WAIT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/WAIT.HTM">WAIT</a> | | | <a href="SAHF.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAHF.HTM">SAHF</a> | <a href="LAHF.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LAHF.HTM">LAHF</a> |
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| | eCX | eDX | eBX | eSP | eBP | eSI | eDI | | | Ap | | Fv | Fv | | |
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+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
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| <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> | <a href="MOVS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVS.HTM">MOVSB</a> | <a href="MOVS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVS.HTM">MOVSW/D</a> | <a href="CMPS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMPS.HTM">CMPSB</a> |<a href="CMPS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMPS.HTM">CMPSW/D</a> | <a href="TEST.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/TEST.HTM">TEST</a> | <a href="STOS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STOS.HTM">STOSB</a> | <a href="STOS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STOS.HTM">STOSW/D</a> | <a href="LODS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LODS.HTM">LODSB</a> | <a href="LODS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LODS.HTM">LODSW/D</a> | <a href="SCAS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SCAS.HTM">SCASB</a> |<a href="SCAS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SCAS.HTM">SCASW/D</a> |
|
|
A|---------+---------+---------+---------+ | | | +---------+---------+ | | | | | |
|
|
| AL,Ob | eAX,Ov | Ob,AL | Ov,eAX | Xb,Yb | Xv,Yv | Xb,Yb | Xv,Yv | AL,Ib | eAX,Iv | Yb,AL | Yv,eAX | AL,Xb | eAX,Xv | AL,Xb |eAX,Xv |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> immediate byte into byte register | <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> immediate word or double into word or double register |
|
|
B|---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| AL | CL | DL | BL | AH | CH | DH | BH | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| Shift Grp2 | <a href="RET.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RET.HTM">RET</a> near | <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LES</a> | <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LDS</a> | <a href="MOV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOV.HTM">MOV</a> | <a href="ENTER.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ENTER.HTM">ENTER</a> | | <a href="RET.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RET.HTM">RET</a> far | <a href="INT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INT.HTM">INT</a> | <a href="INT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INT.HTM">INT</a> | | |
|
|
C|---------+---------+---------+---------+ | +--------+--------+ | <a href="LEAVE.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LEAVE.HTM">LEAVE</a> +---------+---------+ | | <a href="INT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INT.HTM">INTO</a> | <a href="IRET.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IRET.HTM">IRET</a> |
|
|
| Eb,Ib | Ev,Iv | Iw | | Gv,Mp | Gv,Mp | Eb,Ib | Ev,Iv | Iw,Ib | | Iw | | 3 | Ib | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| Shift Grp2 | | | | | |
|
|
D|---------+---------+---------+---------+ <a href="AAM.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AAM.HTM">AAM</a> | <a href="AAD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AAD.HTM">AAD</a> | | <a href="XLAT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/XLAT.HTM">XLAT</a> | ESC(Escape to coprocessor instruction set) |
|
|
| Eb,1 | Ev,1 | Eb,CL | Ev,CL | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+-----------------------------+-------------------+-----------------+
|
|
| <a href="LOOP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LOOP.HTM">LOOPNE</a> | <a href="LOOP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LOOP.HTM">LOOPE</a> | <a href="LOOP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LOOP.HTM">LOOP</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JCXZ</a> | <a href="IN.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IN.HTM">IN</a> | <a href="OUT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OUT.HTM">OUT</a> | <a href="CALL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CALL.HTM">CALL</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNP</a> | <a href="IN.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IN.HTM">IN</a> | <a href="OUT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OUT.HTM">OUT</a> |
|
|
E| | | | +---------+---------+--------+--------+ +---------+---------+---------+---------+---------+--------+--------+
|
|
| Jb | Jb | Jb | Jb | AL,Ib | eAX,Ib | Ib,AL | Ib,eAX | Av | Jv | Ap | Jb | AL,DX | eAX,DX | DX,AL | DX,eAX |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | <a href="REP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/REP.HTM">REP</a> | | | Unary Grp3 | | | | | | |<a href="INC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INC.HTM">INC</a>/<a href="DEC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DEC.HTM">DEC</a> |Indirct |
|
|
F| <a href="LOCK.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LOCK.HTM">LOCK</a> | | <a href="REP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/REP.HTM">REPNE</a> | | <a href="HLT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/HLT.HTM">HLT</a> | <a href="CMC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMC.HTM">CMC</a> +--------+--------+ <a href="CLC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLC.HTM">CLC</a> | <a href="STC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STC.HTM">STC</a> | <a href="CLI.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLI.HTM">CLI</a> | <a href="STI.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STI.HTM">STI</a> | <a href="CLD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLD.HTM">CLD</a> | <a href="STD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STD.HTM">STD</a> | | |
|
|
| | | | <a href="REP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/REP.HTM">REPE</a> | | | Eb | Ev | | | | | | | Grp4 | Grp5 |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
</pre>
|
|
<h3>Two-Byte Opcode Map (first byte is 0FH)</h3>
|
|
<pre>
|
|
|
|
|
|
|
|
0 1 2 3 4 5 6 7 8 9 A B C D E F
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | <a href="LAR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LAR.HTM">LAR</a> | <a href="LSL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LSL.HTM">LSL</a> | | | | | | | | | | | | |
|
|
0| Grp6 | Grp7 | | | | | <a href="CLTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLTS.HTM">CLTS</a> | | | | | | | | | |
|
|
| | | Gw,Ew | Gv,Ew | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
1| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | | <a href="MOVRS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVRS.HTM">MOV</a> | | | | | | | | | |
|
|
2| | | | | | | | | | | | | | | | |
|
|
| Cd,Rd | Dd,Rd | Rd,Cd | Rd,Dd | Td,Rd | | Rd,Td | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
3| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
4| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
5| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
6| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
7| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| Long-displacement jump on condition (Jv) | Long-displacement jump on condition (Jv) |
|
|
8|---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JO</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNO</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JB</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNB</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JZ</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNZ</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JBE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNBE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JS</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNS</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JP</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNP</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JL</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNL</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JLE</a> | <a href="JCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JCC.HTM">JNLE</a> |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| Byte Set on condition (Eb) | | | | | | | | |
|
|
9|---------+---------+---------+---------+---------+---------+--------+--------+ <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETS</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNS</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETP</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNP</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETL</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNL</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETLE</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNLE</a> |
|
|
| <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETO</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNO</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETB</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNB</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETZ</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNZ</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETBE</a> | <a href="SETCC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SETCC.HTM">SETNBE</a> | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> | | <a href="BT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BT.HTM">BT</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHLD</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHLD</a> | | | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | <a href="POP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/POP.HTM">POP</a> | | <a href="BTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTS.HTM">BTS</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHRD</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHRD</a> | | <a href="IMUL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IMUL.HTM">IMUL</a> |
|
|
A| | | | | | | | | | | | | | | | |
|
|
| FS | FS | | Ev,Gv | EvGvIb | EvGvCL | | | GS | GS | | Ev,Gv | EvGvIb | EvGvCL | | Gv,Ev |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LSS</a> | <a href="BTR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTR.HTM">BTR</a> | <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LFS</a> | <a href="LGS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGS.HTM">LGS</a> | <a href="MOVZX.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVZX.HTM">MOVZX</a> | | | Grp-8 | <a href="BTC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTC.HTM">BTC</a> | <a href="BSF.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BSF.HTM">BSF</a> | <a href="BSR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BSR.HTM">BSR</a> | <a href="MOVSX.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MOVSX.HTM">MOVSX</a> |
|
|
B| | | | | | +--------+--------+ | | | | | +-----------------+
|
|
| | | Mp | Ev,Gv | Mp | Mp | Gv,Eb | Gv,Ew | | | Ev,Ib | Ev,Gv | Gv,Ev | Gv,Ev | Gv,Eb Gv,Ew |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
C| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
D| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
E| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
| | | | | | | | | | | | | | | | |
|
|
F| | | | | | | | | | | | | | | | |
|
|
| | | | | | | | | | | | | | | | |
|
|
+---------+---------+---------+---------+---------+---------+--------+--------+---------+---------+---------+---------+---------+---------+--------+--------+
|
|
</pre>
|
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<h3>Opcodes determined by bits 5,4,3 of modR/M byte</h3>
|
|
<pre>
|
|
|
|
|
|
|
|
G +-------+-------+-------+
|
|
r | mod | nnn | R/M |
|
|
o +-------+-------+-------+
|
|
u
|
|
p 000 001 010 011 100 101 110 111
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
1| <a href="ADD.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ADD.HTM">ADD</a> | <a href="OR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/OR.HTM">OR</a> | <a href="ADC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ADC.HTM">ADC</a> | <a href="SBB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SBB.HTM">SBB</a> | <a href="AND.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/AND.HTM">AND</a> | <a href="SUB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SUB.HTM">SUB</a> | <a href="XOR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/XOR.HTM">XOR</a> | <a href="CMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMP.HTM">CMP</a> |
|
|
| | | | | | | | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
2| <a href="RCL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RCL.HTM">ROL</a> | <a href="RCL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RCL.HTM">ROR</a> | <a href="RCL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RCL.HTM">RCL</a> | <a href="RCL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/RCL.HTM">RCR</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHL</a> | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SHR</a> | | <a href="SAL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SAL.HTM">SAR</a> |
|
|
| | | | | | | | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
3| <a href="TEST.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/TEST.HTM">TEST</a> | | <a href="NOT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/NOT.HTM">NOT</a> | <a href="NEG.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/NEG.HTM">NEG</a> | <a href="MUL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/MUL.HTM">MUL</a> | <a href="IMUL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IMUL.HTM">IMUL</a> | <a href="DIV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DIV.HTM">DIV</a> | <a href="IDIV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IDIV.HTM">IDIV</a> |
|
|
| Ib/Iv | | | |AL/eAX |AL/eAX |AL/eAX |AL/eAX |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
4| INC | <a href="DEC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DEC.HTM">DEC</a> | | | | | | |
|
|
| Eb | Eb | | | | | | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
5| <a href="INC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/INC.HTM">INC</a> | <a href="DEC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/DEC.HTM">DEC</a> | <a href="CALL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CALL.HTM">CALL</a> | <a href="CALL.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CALL.HTM">CALL</a> | <a href="JMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JMP.HTM">JMP</a> | <a href="JMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/JMP.HTM">JMP</a> | <a href="PUSH.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/PUSH.HTM">PUSH</a> | |
|
|
| Ev | Ev | Ev | eP | Ev | Ep | Ev | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
</pre>
|
|
<h3>Opcodes determined by bits 5,4,3 of modR/M byte</h3>
|
|
<pre>
|
|
|
|
|
|
|
|
G +-------+-------+-------+
|
|
r | mod | nnn | R/M |
|
|
o +-------+-------+-------+
|
|
u
|
|
p 000 001 010 011 100 101 110 111
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
6| <a href="SLDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SLDT.HTM">SLDT</a> | <a href="STR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/STR.HTM">STR</a> | <a href="LLDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LLDT.HTM">LLDT</a> | <a href="LTR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LTR.HTM">LTR</a> | <a href="VERR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/VERR.HTM">VERR</a> | <a href="VERR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/VERR.HTM">VERW</a> | | |
|
|
| Ew | Ew | Ew | Ew | Ew | Ew | | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
7| <a href="SGDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SGDT.HTM">SGDT</a> | <a href="SGDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SGDT.HTM">SIDT</a> | <a href="LGDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGDT.HTM">LGDT</a> | <a href="LGDT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LGDT.HTM">LIDT</a> | <a href="SMSW.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/SMSW.HTM">SMSW</a> | | <a href="LMSW.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/LMSW.HTM">LMSW</a> | |
|
|
| Ms | Ms | Ms | Ms | Ew | | Ew | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
8| | | | | <a href="BT.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BT.HTM">BT</a> | <a href="BTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTS.HTM">BTS</a> | <a href="BTR.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTR.HTM">BTR</a> | <a href="BTC.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/BTC.HTM">BTC</a> |
|
|
| | | | | | | | |
|
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
|
</pre>
|
|
<p>
|
|
<hr>
|
|
<p><b>up:</b> <a href="APP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/APP.HTM">Appendices</a><br>
|
|
<b>next:</b> <a href="APPB.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/APPB.HTM">Appendix B -- Complete Flag Cross-Reference</a><br>
|
|
</body>
|
|
|