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3. (H0pts) Design a microprocessor based system with an 8085 microprocessor, an 8155 PLA, an 8251 USART, a 6116 RAM, a 2716 EPROM, 74LS138 decoder(s)

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3. (H0pts) Design a microprocessor based system with an 8085 microprocessor, an 8155 PLA, an 8251 USART, a 6116 RAM, a 2716 EPROM, 74LS138 decoder(s) and logic gates. Connect a 2 MHz crystal to the microprocessor. Write a setup subroutine to communicate asynchronous at 2000 baud rate. I stop bit. 7 bits data and odd parity

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