Question: A CPU has the horizontal microcode and micro - operations shown below. When SEL = 0 the microsequencer obtains the next address from the ADDR

A CPU has the horizontal microcode and micro-operations shown below. When SEL=0 the microsequencer obtains the next address from the ADDR field; the next address is generated by the mapping hardware when \(\mathrm{SEL}=1\). The mapping function is \(1,1,\mathrm{IR},\mathrm{IR}\). IR is a 2-bit register, AR and PC are 6-bit registers, and DR and AC are 8-bit registers.
a) Show the instruction set realized by this CPU. Show the instruction code and overall function for each instruction.
b) Which micro-instructions within the address range 8-15 are never accessed, if any?
A CPU has the horizontal microcode and micro -

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