Rep instruction

cmpsb instruction in 8086repnz scasb
assembly rep instruction
rep stosd
x64 rep
rep assembly
reps
rep c

REP - Repeat String Operation Usage: REP Modifies flags: None Repeats execution of string instructions while CX != 0. After each string operation, REP/REPE/REPZ/REPNE/REPNZ -- Repeat Following String Operation. Opcode, Instruction, Clocks, Description, Example. F3 6C, rep insb, 13+6*(E)CX,x86 Instruction Set Reference · REP/REPE/REPZ/REPNE/REPNZ. REP/REPE/REPZ/REPNE/REPNZ -- Repeat Following String Operation. Opcode Instruction Clocks Description F3 6C REP INS r/m8, DX 13+6*(E)CX, pm=7+6*(E)CX If CPL There's a whole blog named after this instruction. And the first post describes the reason behind it: repzret.org/p/repzret/. REP is a prefix written before one of the string instructions. It is used for repeating an instruction count number of times, where count is stored in the The REP prefixes apply only to one string instruction at a time. To repeat a block of instructions, use the LOOP instruction or another looping construct. All