AND

REG0=GPR8_B():rw IMM0:r:b

x86_64 X86_LEGACY LOGICAL I86 source: xed

XED_AND_GPR8_IMMb_80r4

Encoding

encoding_kindX86_LEGACY
opcode_bytes80
opcode_mapONEBYTE
mandatory_prefix-
has_modrmTrue
modrm.reg = /4/4
imm_size_bytes1
attributesBYTEOP
cpl3
raw_encoding0x80 MOD[0b11] MOD=3 REG[0b100] RM[nnn] UIMM8()

Operands (2)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG RW EXPLICIT MODRM_REG
1 IMM0 IMM b R EXPLICIT IMM

Flag effects (6)

CF = SET_0 PF = WRITE AF = UNDEFINED ZF = WRITE SF = WRITE OF = SET_0

Micro-ops sequence (0)

No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.