Draw three more diagrams, each showing the state of machine after execution of every instruction viz. LOAD, ADD and STOR. Show the changes in the values of Registers and memory locations, if any, due to execution of instruction. Show all the addresses and values in hexadecimal notations.

Initial State:

Registers:

• AC: 0000
• PC: 11FE
• MAR: Not specified (Assumed 0)
• MBR: Not specified (Assumed 0)
• IR: Not specified (Assumed 0)

Memory:

• (11FE)h: LODA A
• (11FF)h: 4321
• (2000)h: 1FFE
• (2001)h: 0000

After Execution of LODA A:

Registers:

• AC: 4321
• PC: 1200
• MAR: Not specified (Assumed updated based on PC)
• MBR: Not specified (Assumed updated based on Memory)
• IR: LODA A

Memory (Unchanged):

• (11FE)h: LODA A
• (11FF)h: 4321
• (2000)h: 1FFE
• (2001)h: 0000

After Execution of ADD B:

Registers:

• AC: 6341
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