Problem $\backslash$#$7$

The screen memory on the Hack is likely implemented using dual$-$port RAM in which there are two address inputs. One address is used by the CPU to read and write from a single location in memory, while the other is used to read from an independent location $($but never write to it$).$

Implement a RAM$4$dp chip, which is a $4-$word $(16-$bit words$)$ dual port RAM.

Problem $\backslash$#$8$

A common Boolean logic function is $\backslash ($ x $\backslash$rightarrow y $\backslash ),$ which is TRUE unless y is FALSE when x is TRUE.

Can the Hack ALU implement this function? If so$,$ what do the control inputs need to be$.$ If not, explain why not. Hint: How many minterms does this function's canonical SOP form have.

Problem $\backslash$#$9$

Design the jump logic for the Hack CPU $($i$.$e$.,$ the logic that drives the 'load' input of the program counter$).$

Problem $\backslash$#$10$

A common Boolean logic function is $\backslash ($ x $\backslash$rightarrow y $\backslash ),$ which is TRUE unless y is FALSE when x is TRUE.

Write a Hack Assembly language program that implements

$\backslash [$

z$=$x $\backslash$rightarrow y

$\backslash ]$

where $\backslash (\backslash$mathrm$\{$x$\},\backslash$mathrm$\{$y$\}\backslash ),$ and z are named variables. You may use R$13$ through R$15$ as a scratchpad.