Repeat Problem 8-22 for the two instructions: Add and check OV (AOV), described by the register transfer

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Repeat Problem 8-22 for the two instructions: Add and check OV (AOV), described by the register transfer

R[DR] R[SA] + R[SB], V:R8-1, V:R8-0

and branch on overlow (BRV), described by the register transfer

R8 R8, V: PC PC + se AD, V: PC PC + 1

The opcode for AOV is 1000101 and for BRV is 1000110. Note that register R8 is used as a “status” register that stores the overlow result V for the previous operation. All of the values N, Z, C and V could be stored in R8 to give a complete status on the prior arithmetic or logic operation.

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Related Book For  answer-question

Logic And Computer Design Fundamentals

ISBN: 9780133760637

5th Edition

Authors: M. Morris Mano, Charles Kime, Tom Martin

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