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AMD-K6 Datasheet(PDF) 86 Page - Advanced Micro Devices |
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AMD-K6 Datasheet(HTML) 86 Page - Advanced Micro Devices |
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86 / 346 page ![]() 68 Software Environment Chapter 3 AMD-K6® Processor Data Sheet 20695H/0—March 1998 Preliminary Information XOR mem16/32, imm16/32 81h mm-110-xxx long load, alu, store XOR mreg16/32, imm8 (signed ext.) 83h 11-110-xxx short alux XOR mem16/32, imm8 (signed ext.) 83h mm-110-xxx long load, alux, store Table 11. Floating-Point Instructions Instruction Mnemonic First Byte Second Byte ModR/M Byte Decode Type RISC86® Opcodes Note F2XM1 D9h F0h short float FABS D9h F1h short float FADD ST(0), ST(i) D8h 11-000-xxx short float * FADD ST(0), mem32real D8h mm-000-xxx short fload, float FADD ST(i), ST(0) DCh 11-000-xxx short float * FADD ST(0), mem64real DCh mm-000-xxx short fload, float FADDP ST(i), ST(0) DEh 11-000-xxx short float * FBLD DFh mm-100-xxx vector * FBSTP DFh mm-110-xxx vector * FCHS D9h E0h short float FCLEX DBh E2h vector FCOM ST(0), ST(i) D8h 11-010-xxx short float * FCOM ST(0), mem32real D8h mm-010-xxx short fload, float FCOM ST(0), mem64real DCh mm-010-xxx short fload, float FCOMP ST(0), ST(i) D8h 11-011-xxx short float * FCOMP ST(0), mem32real D8h mm-011-xxx short fload, float FCOMP ST(0), mem64real DCh mm-011-xxx short fload, float FCOMPP DEh 11-011-001 short float FCOS ST(0) D9h FFh short float FDECSTP D9h F6h short float FDIV ST(0), ST(i) (single precision) D8h 11-110-xxx short float * FDIV ST(0), ST(i) (double precision) D8h 11-110-xxx short float * FDIV ST(0), ST(i) (extended precision) D8h 11-110-xxx short float * Note: * The last three bits of the modR/M byte select the stack entry ST(i). Table 10. Integer Instructions (continued) Instruction Mnemonic First Byte Second Byte ModR/M Byte Decode Type RISC86® Opcodes |
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