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Thread: IBM PC XT 5160 BIOS versions

  1. #21
    Join Date
    May 2006
    Location
    Melbourne, Australia
    Posts
    5,876

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    Quote Originally Posted by nc_mike View Post
    would that board have the latest 4/86 BIOS that supports the 101 keyboards, and if not, can the BIOS be upgraded/flashed using a diskette?
    Both questions are answered at [here].

  2. #22

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    I've tested with BIOS (08/16/82) on 5150 machine. (Of course IBM PC 5150/5160 emulator.)

    It works well.

    I think this BIOS is for IBM PC 5150 than 5160.

    I've run PC-Tools on 5160 machine configulation with this BIOS.

    The result is on screenshot.



    According to PC-Tools, it recognize as IBM PC (Not IBM PC XT)

    But PCTools recognize as IBM PC-XT correctly on BIOS (11/08/82)


  3. #23
    Join Date
    Nov 2008
    Location
    Portsmouth RI
    Posts
    348

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    Just looked at the 5160 MB that I replaced the 12v line caps on.

    This is a IBM 256 - 640 system board

    U18 = 62x0890
    U19 = 68x4370
    dated 1986 no month shown

    Chips stamped IBM

  4. #24
    Join Date
    Jan 2012
    Location
    Connecticut, USA
    Posts
    1,506

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    can I upgrade my 5160 XT (256KB board) to accept the new bios which supports 720K and 1.2mb disk drives? What is involved? Right now I have to use a card with onboard bios to utilize a 1.44 drive.

  5. #25

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    I'm wondering if it's possible to "upgrade" a clone PC-XT by changing its ROM chip for an IBM one ?

  6. #26
    Join Date
    Jan 2013
    Location
    Marietta, GA
    Posts
    2,753

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    Many generic ERSO style XT clones will happily accept IBM ROMs so people could add IBM BASIC. But not all clones are that hardware compatible. Doing that may not work at all or lose smaller features that were added to later clone BIOSes (For example, commonly in turbo 8-mhz 8088 boards you can lose keyboard turbo switching).

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