Question

RANDOM MEMORY ACCESS (RAM) EMULATOR: The following circuit is a memory with 8 addresses, each address holding a 4-bit data. The memory positions are implemented by 4-bit registers. The resetn and clock signals are shared by all the registers. Data is written onto (or read from) one of the registers. Memory Write (wr_rd = 1): The 4-bit input Din is written into one register. The address [2..0] signal selects the register to be written. Here, the 7- segment display must show 0. Example: if address= "101", then Din is written into register 5. Memory Read (wr_rd = 0): The MUX output appears on the 7-segment display (hex. value). The address [2..0] signal selects the register from which data is read. For example, if address= "010", then data in register 2 appears on the 7-segment display. If data in register 2 is "1010", then the symbol 'A' appears on the 7-segment display.

          RANDOM MEMORY ACCESS (RAM)
EMULATOR: The following circuit is a
memory with 8 addresses, each address
holding a 4-bit data. The memory
positions are implemented by 4-bit
registers. The resetn and clock
signals are shared by all the registers.
Data is written onto (or read from) one
of the registers.
Memory Write (wr_rd = 1): The 4-bit
input Din is written into one register. The
address [2..0] signal selects the
register to be written. Here, the 7-
segment display must show 0. Example:
if address= "101", then Din is written
into register 5.
Memory Read (wr_rd = 0): The MUX
output appears on the 7-segment display
(hex. value). The address [2..0]
signal selects the register from which
data is read. For example, if address=
"010", then data in register 2 appears
on the 7-segment display. If data in
register 2 is "1010", then the symbol 'A'
appears on the 7-segment display.

RANDOM MEMORY ACCESS (RAM)
EMULATOR: The following circuit is a
memory with 8 addresses, each address
holding a 4-bit data. The memory
positions are implemented by 4-bit
registers. The resetn and clock
signals are shared by all the registers.
Data is written onto (or read from) one
of the registers.
Memory Write (wrrd = 1): The 4-bit
input Din is written into one register. The
address [2..0] signal selects the
register to be written. Here, the 7-
segment display must show 0. Example:
if address= "101", then Din is written
into register 5.
Memory Read (wrrd = 0): The MUX
output appears on the 7-segment display
(hex. value). The address [2..0]
signal selects the register from which
data is read. For example, if address=
"010", then data in register 2 appears
on the 7-segment display. If data in
register 2 is "1010", then the symbol 'A'
appears on the 7-segment display.

Added by Holly B.

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