> CX does not need to change for any form of the rep instruction. If
 > what you are trying to say is that rep movsd uses ecx, guess
 > again. it does not.
According to my 386 tech manuals:
    REPcc     Repeat While Condition is Met (prefix)       8086
    Opcode    Format    
    F2 *      REP, REPNE, REPNZ   (E)CX>0 and ZF=0    INS, MOVS, OUTS, STOS
    F3 *      REPE, REPZ          (E)CX>0 and ZF=1    CMPS, SCAS
    
--- GEcho 1.02+
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