[10 pts] Design an instruction that subtracts an operand held in the main memory from a...

 

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[10 pts] Design an instruction that subtracts an operand held in the main memory from a value stored in the accumulator register. Instruction Opcode Present State 0 1 Subtract 3 2 3 Description Pin number Next step[1:0] 13:12 11:10 Use pc 9 Load mar 8 arith 7 invert 6 pass 5 load acc 4 acc_to_db 3 read 2 write 1 load ir 0 HEX Equivalent [10 pts] Design an instruction that subtracts an operand held in the main memory from a value stored in the accumulator register. Instruction Opcode Present State 0 1 Subtract 3 2 3 Description Pin number Next step[1:0] 13:12 11:10 Use pc 9 Load mar 8 arith 7 invert 6 pass 5 load acc 4 acc_to_db 3 read 2 write 1 load ir 0 HEX Equivalent