Setting chip to PENTIUMPRO Attempting to decode: da c0 iclass FCMOVB category FCMOV ISA-extension X87 ISA-set FCMOV instruction-length 2 operand-width 32 effective-operand-width 32 effective-address-width 32 stack-address-width 32 iform-enum-name FCMOVB_ST0_X87 iform-enum-name-dispatch (zero based) 0 iclass-max-iform-dispatch 1 Nominal opcode position 0 Nominal opcode 0xda Operands # TYPE DETAILS VIS RW OC2 BITS BYTES NELEM ELEMSZ ELEMTYPE REGCLASS # ==== ======= === == === ==== ===== ===== ====== ======== ======== 0 REG0 REG0=ST(0) IMPLICIT CW F80 80 10 1 80 LONGDOUBLE X87 1 REG1 REG1=ST(0) EXPLICIT R F80 80 10 1 80 LONGDOUBLE X87 2 REG2 REG2=X87STATUS SUPPRESSED W PSEUDO 0 0 1 0 INT PSEUDOX87 3 REG3 REG3=EFLAGS SUPPRESSED RW Y 32 4 1 32 INT FLAGS Memory Operands MemopBytes = 0 FLAGS: reads-rflags cf-tst fc0-u fc1-mod fc2-u fc3-u read: cf mask=0x1 written: fc0 fc1 fc2 fc3 mask=0xf0000000 undefined: fc0 fc2 fc3 mask=0xd0000000 ATTRIBUTES: NOTSX ISA SET: [FCMOV] 0 CPUID GROUP NAME: [FCMOV] 0 CPUID RECORD NAME: [CMOV] {Leaf 0x00000001, subleaf 0x00000000, EDX[15:15]} = 1 1 CPUID RECORD NAME: [FPU] {Leaf 0x00000001, subleaf 0x00000000, EDX[0:0]} = 1