How many general-purpose registers are there in Intel’s 8085A µP? Which register pairs are allowed? Briefly explain role of program counter, instruction register and instruction decoder in a microprocessor.

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter4: Processor Technology And Architecture
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How many general-purpose registers are there in Intel’s 8085A µP? Which register pairs are allowed? Briefly explain role of program counter, instruction register and instruction decoder in a microprocessor.     

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