Question: I. In the SAP-1 architecture, why is the input to RAM from MAR 4 bit but the output from RAM to the bus is 8

I. In the SAP-1 architecture, why is the input to RAM from MAR 4 bit but the output from RAM to the bus is 8 bit? II. Write down the program (assembly language and machine language) to get the result in SAP-1 for the following arithmetic expression: 25+20-18-30 (decimal) fast.

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