Question: The SM chart for a simplified vending machine is shown here. The vending machine accepts only dimes and nickels. One soda costs 15 cents at

The SM chart for a simplified vending machine is shown here. The vending machine accepts only dimes and nickels. One soda costs 15 cents at this vending machine.

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D:Dime N:Nickel Z₀:0cent Z₁:5cents Z₂:10cents Z₃:15cents Z₄:soda
(a) Modify this figure to add one more functionality on resetting the vending machine. This reset could cancel the order.
(b) Derive the next-state equation and draw the state table.
(c) If the given SM chart (with reset function) is implemented using a traditional ROM method, how big a ROM is needed? Explain your calculation.
(d) Convert the SM chart (with reset function) to the proper form by adding a minimum number of extra states.
(e) Write the microcode for implementing the proper SM chart using single address microprogramming.

So/Zo SIZ, F (T S,IZ, SIZ,Z4

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