The following hardware interface can be used to achieve the memory map indicated:
1. A multiplexer connected to the address bus of the microprocessor unit. The select inputs of the multiplexer can be connected to control signals generated by the microprocessor unit to select different memory spaces.
2. A decoder connected to the output of the multiplexer. The decoder can decode the address lines to generate chip select signals for different memory locations.
3. ROM chip connected to the output of the decoder. The chip select signal generated by the decoder will enable the ROM to respond to the microprocessor unit during the memory access cycle.
4. RAM 1 chip connected to the output of the decoder. The chip select signal generated by the decoder will enable the RAM 1 to respond to the microprocessor unit during the memory access cycle.
5. RAM 2 chip connected to the output of the decoder. The chip select signal generated by the decoder will enable the RAM 2 to respond to the microprocessor unit during the memory access cycle.
6. I/O ports connected to the output of the decoder. The chip select signal generated by the decoder will enable the I/O ports to respond to the microprocessor unit during the I/O access cycle.
The memory map can be achieved as follows:
ROM: 0000 - 07FF --> Connected to the decoder through the multiplexer, using the address lines A0-A10.
RAM 1: 1200 - 13FF --> Connected to the decoder through the multiplexer, using the address lines A0-A10.
RAM 2: 5000 - 50FF --> Connected to the decoder through the multiplexer, using the address lines A0-A10.
I/O: E110 - E11F --> Connected to the decoder through the multiplexer, using the address lines A0-A15.
With this hardware interface, the microprocessor unit can access different memory locations depending on the memory space selected. The ROM, RAM 1, RAM 2, and I/O ports are mapped to different address ranges, and the decoder generates chip select signals to enable each memory location during the memory access cycle.
Combine simplified Microprocessor Unit, RAM 1 & 2, ROM, and I/O ports using appropriate hardware interface in order to achieve the memory map indicated.
ROM: 0000 - 07FF
RAM 1: 1200 - 13FF
RAM 2: 5000 - 50FF
I/O: E110 - E11F
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