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PIO 8255 and Multiplexer 74150

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carenas1

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Hi,
Need help with 8085 code (instruction set with mnemonic codes).
I have microprocessor 8085, 8-16 PIO (programable input / output) 8255 and multiplexer 74150. Need code to test this system.
Multiplexer is used for input signal from pio and output to microprocessor through SID then button is pressed.

Thanks for help.
 

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