Q11) CPU control unit. What is/are true of vertical microprogrammed control vers

Question

Q11) CPU control unit. What is/are true of vertical microprogrammed control versus ''horizontal'' micro-programmed control? (Remember that vertical micro-instructions use coded fields rather than a dedicated bit for each control line). I. The control signals often need extra gates to decode the vertical fields. II. There is one bit per control word for every control signal in every control word. III. Both vertical and horizontal schemes would use ''stop Bits'' to avoid wasting space in the micro-control memory. (1)) I only (2)II only (3) III only (4) More than one of the above (5) None of the above

Explanation / Answer

3. III only

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