CHAPTER 16 A86 RESERVED SYMBOLS $ Current assembly pointer ? Uninitialized memory slot AAA ASCII adjust addition AAD ASCII adjust division AAM ASCII adjust multiply AAS ASCII adjust subtract ABS EXTRN specifier ADC Add with carry ADD Instruction ADD4S NEC Instruction AH Byte register AL Byte register AND Instruction/operator ARPL 286 Prot Instruction ASSUME Ignored, compatibility AT SEGMENT specifier AX Word register B Byte memory specifier BH Byte register BIT Bit-mask operator BL Byte register BOUND Instruction BP Word register BX Word register BY Bytes-combine operator BYTE Byte memory specifier CALL Instruction CALL80 NEC Instruction CBW Convert byte to word CH Byte register CL Byte register CLC Clear carry CLD Clear direction CLI Clear interrupt CLRBIT NEC Instruction CLTS 286 Prot Instruction CMC Complement carry CMP Compare CMP4S NEC Instruction CMPS Compare string CMPSB Compare string byte CMPSW Compare string word CODE Segment name COMMENT Directive COMMON SEGMENT specifier CS Segment register CWD Convert word to dword CX Word register 16-2 D Dword specifier DAA Decimal adjust add DAS Decimal adjust sub DATA Segment name DB Define bytes DD Define dwords DEC Decrement DH Byte register DI Word register DIV Divide DL Byte register DQ Define Qwords DS Segment register DT Define Twords DUP Duplicate operator DW Define words DWORD Memory specifier DX Word register ELSE Conditional term ELSEIF Conditional term END Start specifier ENDIF Conditional term ENDP End of procedure ENDS End of segment ENTER Instruction EQ Equals operator EQU Equate directive ES Segment register EVEN Coerce to even address EXTRN Ignored, compatibility F Far specifier F2XM1 87 Instruction F4X4 IIT-2C87 Instruction FABS 87 Instruction FADD 87 Instruction FADDP 87 Instruction FAR Far specifier FBANK IIT-2C87 Instruction FBLD 87 Instruction FBSTP 87 Instruction FCHS 87 Instruction FCLEX 87 Instruction FCOM 87 Instruction FCOMP 87 Instruction FCOMPP 87 Instruction FCOS 387 Instruction 16-3 FDECSTP 87 Instruction FDISI 87 Instruction FDIV 87 Instruction FDIVP 87 Instruction FDIVR 87 Instruction FDIVRP 87 Instruction FENI 87 Instruction FFREE 87 Instruction FIADD 87 Instruction FICOM 87 Instruction FICOMP 87 Instruction FIDIV 87 Instruction FIDIVR 87 Instruction FILD 87 Instruction FIMUL 87 Instruction FINCSTP 87 Instruction FINIT 87 Instruction FIST 87 Instruction FISTP 87 Instruction FISUB 87 Instruction FISUBR 87 Instruction FLD 87 Instruction FLD1 87 Instruction FLDCW 87 Instruction FLDENV 87 Instruction FLDL2E 87 Instruction FLDL2T 87 Instruction FLDLG2 87 Instruction FLDLN2 87 Instruction FLDPI 87 Instruction FLDZ 87 Instruction FMUL 87 Instruction FMULP 87 Instruction FNCLEX 87 Instruction FNDISI 87 Instruction FNENI 87 Instruction FNINIT 87 Instruction FNOP 87 Instruction FNSAVE 87 Instruction FNSTCW 87 Instruction FNSTENV 87 Instruction FNSTSW 87 Instruction FPATAN 87 Instruction FPREM 87 Instruction FPREM1 387 Instruction FPTAN 87 Instruction FRNDINT 87 Instruction FRSTOR 87 Instruction 16-4 FSAVE 87 Instruction FSCALE 87 Instruction FSETPM 87 Instruction FSIN 387 Instruction FSINCOS 387 Instruction FSQRT 87 Instruction FST 87 Instruction FSTCW 87 Instruction FSTENV 87 Instruction FSTP 87 Instruction FSTSW 87 Instruction FSUB 87 Instruction FSUBP 87 Instruction FSUBR 87 Instruction FSUBRP 87 Instruction FTST 87 Instruction FUCOM 387 Instruction FUCOMP 387 Instruction FUCOMPP 387 Instruction FWAIT 87 Instruction FXAM 87 Instruction FXCH 87 Instruction FXTRACT 87 Instruction FYL2X 87 Instruction FYL2XP1 87 Instruction GE Greater/equal operator GROUP Group of segments GT Greater than operator HIGH High byte of word op HLT Halt IDIV Integer divide IF Skip/conditional term IMUL Integer multiply IN Input from port INC Increment INCLUDE Ignored, compatibility INS Input string INSB Input string byte INSW Input string word INT Interrupt INTO Interrupt on overflow IRET Interrupt return 16-5 JA Jump on above JAE Jump above equal JB Jump on below JBE Jump below equal JC Jump on carry JCXZ Jump on CX zero JE Jump on equal JG Jump on greater JGE Jump greater equal JL Jump on less JLE Jump less equal JMP Jump unconditional JNA Jump not above JNAE Jump not above equal JNB Jump not below JNBE Jump not below equal JNC Jump not carry JNE Jump not equal JNG Jump not greater JNGE Jump not greater equ JNL Jump not less JNLE Jump not less equal JNO Jump not overflow JNP Jump not parity JNS Jump not sign JNZ Jump not zero JO Jump overflow JP Jump parity JPE Jump parity even JPO Jump parity odd JS Jump on sign JZ Jump on zero L2E Real constant L2T Real constant LABEL Declaration LAHF Load AH flags LAR 286 Prot Instruction LDS Load into DS LE Less equal operator LEA Load eff address LEAVE Instruction LES Load into ES LG2 Real constant LGDT 286 Prot Instruction LIDT 286 Prot Instruction LLDT 286 Prot Instruction LMSW 286 Prot Instruction LN2 Real constant 16-6 LOCK Instruction LODBITS NEC Instruction LODS Load string LODSB Load string byte LODSW Load string word LONG Operator LOOP Instruction LOOPE Loop on equal LOOPNE Loop not equal LOOPNZ Loop not zero LOOPZ Loop on zero LOW Operator LSL 286 Prot Instruction LT Less than operator LTR 286 Prot Instruction MACRO Directive MAIN Program strating label MEMORY Segment specifier MOD Operator MOV Instruction MOVS Move string MOVSB Move string byte MOVSW Move string word MUL Multiply NAME .OBJ module name NE Not equals operator NEAR Operator NEG Instruction NIL No code instruction NOP No operation NOT Instruction/operator NOTBIT NEC Instruction OFFSET Operator OR Instruction/operator ORG Directive OUT Output to port OUTS Output String OUTSB Output string byte OUTSW Output string word PAGE Ignored, compatibility PARA Segment specifier PI Real Constant POP Instruction POPA Pop all POPF Pop flags PROC Procedure Directive PTR Ignored, compatibility PUBLIC Ignored, compatibility PUSH Instruction PUSHA Push all PUSHF Push flags 16-7 Q Qword specifier QWORD Memory specifier RADIX Directive RCL Rotate carry left RCR Rotate carry right REP Repeat prefix REPC NEC Instruction REPE Repeat while equal REPNC NEC Instruction REPNE Repeat not equal REPNZ Repeat while zero REPZ Repeat non zero RET Return RETF Far Return ROL Rotate left ROL4 NEC Instruction ROR Rotate right ROR4 NEC Instruction SAHF Store AH to flags SAL Shift arith left SAR Shift arith right SBB Subtract with borrow SCAS Scan string SCASB Scan string byte SCASW Scan string word SEG Operator SEGMENT Directive SETBIT NEC Instruction SGDT 286 Prot Instruction SHL Instruction/operator SHORT Operator SHR Instruction/operator SI Word register SIDT 286 Prot Instruction SLDT 286 Prot Instruction SMSW 286 Prot Instruction SP Word register SS Segment register ST EQU 0 for compatibility STACK Segment specifier STC Set carry STD Set direction STI Set interrupts STOBITS NEC Instruction STOS Store string STOSB Store string byte STOSW Store string word STR 286 Prot Instruction STRUC Structure directive SUB Instruction SUB4S NEC Instruction SUBTTL Ignored, compatibility 16-8 T Tbyte specifier TBYTE Memory specifier TEST Instruction TESTBIT NEC Instruction THIS This-location specifier TITLE Ignored, compatibility TYPE Operator VERR 286 Prot Instruction VERW 286 Prot Instruction W Word specifier WAIT Instruction WORD Word specifier XCHG Instruction XLAT Translate byte XLATB Translate byte XOR Instruction/operator