> Signed multiplication and division use an internal flag called F1 to keep track of the sign. The F1 flag is toggled by microcode through the CF1 (Complement F

> Signed multiplication and division use an internal flag called F1 to keep track of the sign. The F1 flag is toggled by microcode through the CF1 (Complement F1) micro-instruction. The F1 flag is implemented with a flip-flop, along with a multiplexer to select the value. It is cleared when a new instruction starts, set by a REP prefix, and toggled by the CF1 micro-instruction. Does this mean that one can run 'REP DIV' and get a negated quotient?