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  1. #1
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    keyboard interfacing with 8086

    hi to all
    I want to interface a keyboard (preferrably an AT type) to 8086 or z80 microprocessor. connection is serial and i might use an interface ic such as 8255.
    i will be pleased if anyone can help me with his instructions about timing, interface ic, asm program needed &etc.

    cheers.

    •   Alt2nd January 2005, 22:03

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  2. #2
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    8255 interfacing with 8086

    The standard AT keyboard uses a serial protocol. No interface ICs are required other than the standard 8255. www.beyondlogic.org gives a pretty complete description of the protocol and connections.



    •   Alt2nd January 2005, 23:08

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  3. #3
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    keyboard interfacing with 8086 mp

    Here is another example from Philips. This one is closer to 80-families and also includes all look-up tables. You can easily identify sections of code that will be useless for you (I2C subroutines for example).
    http://www.semiconductors.philips.co...otes/AN434.pdf



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