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Thread: IBM PC AT 5170 BIOS versions

  1. #1
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    Default IBM PC AT 5170 BIOS versions

    According to:
    1. Various editions of Upgrading & Repairing PC's (by Scott Mueller)
    2. ROMs in possession
    3. IBM's Technical Reference for the 5170


    -------------------------
    01/10/84
    -------------------------
    ROM U27 = 32K chip
    ROM U47 = 32K chip
    KNOWN ROM SETS = U27=6181028/U47=6181029
    ID/SUBMODEL/VERSION = FC/--/--
    * Found on the type 1 motherboard (type 1 uses 'piggyback' type RAM chips).
    * Designed for operation at 6 MHz only.
    * Supports 15 hard drive types (with type 15 being reserved).
    * Support for 360K and 1.2M floppy drives.

    Memory map:
    b = ROM BASIC
    R = ROM BIOS
    ------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
    0F0000: RRRRRRRRRRRRRRRRRRRRRRRRbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbRRRRRRRR
    ------: |<------------------------ U27/U47 ---------------------------->|



    -------------------------
    06/10/85
    -------------------------
    ROM U27 = 32K chip
    ROM U47 = 32K chip
    KNOWN ROM SETS = U27=6480090/U47=6480091
    ID/SUBMODEL/VERSION = FC/00/01
    * Found on the type 2 motherboard (refer 5170 entry at the VCF Wiki).
    * "POST fixes clock rate to 6 MHz"
    * Supports 22 hard drive types (with type 15 being reserved).
    * Added support for 720k diskette drive.

    Memory map:
    b = ROM BASIC
    R = ROM BIOS
    ------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
    0F0000: RRRRRRRRRRRRRRRRRRRRRRRRbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbRRRRRRRR
    ------: |<------------------------ U27/U47 ---------------------------->|



    -------------------------
    11/15/85
    -------------------------
    ROM U27 = 32K chip
    ROM U47 = 32K chip
    KNOWN ROM SETS = U27=61X9266/U47=61X9265 (EPROM) or U27=62X0820/U47=62X0821 (PROM)
    ID/SUBMODEL/VERSION = FC/01/00
    * Found on the type 3 motherboard (refer 5170 entry at the VCF Wiki).
    * "POST fixes clock rate to 8 MHz"
    * Supports 23 hard drive types (with type 15 being reserved).
    * Added support for 1.44M diskette drive (you can boot from a 1.44M diskette).
    * Added support for the 101-key Enhanced keyboard.

    Memory map:
    b = ROM BASIC
    R = ROM BIOS
    ------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
    0F0000: RRRRRRRRRRRRRRRRRRRRRRRRbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbRRRRRRRR
    ------: |<------------------------ U27/U47 ---------------------------->|
    Last edited by modem7; June 19th, 2010 at 03:21 AM. Reason: Reflects fact that there are 3 (not 2) types of motherboard

  2. #2
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    Default Drive types in 5170 BIOS

    More 5170 BIOS related information for this sticky:

    Code:
    The first 5170 BIOS (dated 01/10/84) supports 15 drive types:
    
    Type Cyls  Heads   WPC  Ctrl    LZ  S/T
    ----------------------------------------------------------------------------
      1   306    4     128   00h   305   17   (10.2 MB)
      2   615    4     300   00h   615   17   (20.4 MB) (e.g. CMI6426, ST-4026)
      3   615    6     300   00h   615   17   (30.6 MB)
      4   940    8     512   00h   940   17   (62.4 MB)
      5   940    6     512   00h   940   17   (46.8 MB)
      6   615    4   65535   00h   615   17   (20.4 MB)
      7   462    8     256   00h   511   17   (30.7 MB)
      8   733    5   65535   00h   733   17   (30.4 MB)
      9   900   15   65535   08h   901   17   ( 112 MB)
     10   820    3   65535   00h   820   17   (20.4 MB)
     11   855    5   65535   00h   855   17   (35.5 MB)
     12   855    7   65535   00h   855   17   (49.7 MB)
     13   306    8     128   00h   319   17   (20.3 MB)
     14   733    7   65535   00h   733   17   (42.6 MB)
     15     0    0       0   00h     0    0   (Reserved)
    
    The second 5170 BIOS (dated 06/10/85) extents that to 22 types:
    
     16   612    4       0   00h   663   17   (20.3 MB)
     17   977    5     300   00h   977   17   (40.6 MB)
     18   977    7   65535   00h   977   17   (56.8 MB)
     19  1024    7     512   00h  1023   17   (59.5 MB)
     20   733    5     300   00h   732   17   (30.4 MB) (e.g. IBM0665, ST-4038)
     21   733    7     300   00h   732   17   (42.6 MB)
     22   733    5     300   00h   733   17   (30.4 MB)
    
    The third 5170 BIOS (dated 11/15/85) extents that to 23 types:
    
     23   306    4       0   00h   336   17   (10.2 MB)

  3. #3
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    Default

    Quote Originally Posted by modem7 View Post
    More 5170 BIOS related information for this sticky:

    Code:
    The first 5170 BIOS (dated 01/10/84) supports 15 drive types:
    
    Type Cyls  Heads   WPC  Ctrl    LZ  S/T
    ----------------------------------------------------------------------------
      1   306    4     128   00h   305   17   (10.2 MB)
      2   615    4     300   00h   615   17   (20.4 MB) (e.g. CMI6426, ST-4026)
      3   615    6     300   00h   615   17   (30.6 MB)
      4   940    8     512   00h   940   17   (62.4 MB)
      5   940    6     512   00h   940   17   (46.8 MB)
      6   615    4   65535   00h   615   17   (20.4 MB)
      7   462    8     256   00h   511   17   (30.7 MB)
      8   733    5   65535   00h   733   17   (30.4 MB)
      9   900   15   65535   08h   901   17   ( 112 MB)
     10   820    3   65535   00h   820   17   (20.4 MB)
     11   855    5   65535   00h   855   17   (35.5 MB)
     12   855    7   65535   00h   855   17   (49.7 MB)
     13   306    8     128   00h   319   17   (20.3 MB)
     14   733    7   65535   00h   733   17   (42.6 MB)
     15     0    0       0   00h     0    0   (Reserved)
    
    The second 5170 BIOS (dated 06/10/85) extents that to 22 types:
    
     16   612    4       0   00h   663   17   (20.3 MB)
     17   977    5     300   00h   977   17   (40.6 MB)
     18   977    7   65535   00h   977   17   (56.8 MB)
     19  1024    7     512   00h  1023   17   (59.5 MB)
     20   733    5     300   00h   732   17   (30.4 MB) (e.g. IBM0665, ST-4038)
     21   733    7     300   00h   732   17   (42.6 MB)
     22   733    5     300   00h   733   17   (30.4 MB)
    
    The third 5170 BIOS (dated 11/15/85) extents that to 23 types:
    
     23   306    4       0   00h   336   17   (10.2 MB)

    Do you happen to know if I can use the 2nd and third BIOS on my 286 6mhz motherboard which has the first BIOS version?

    edit: I see you answered this in another post, thanks!

  4. #4
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    Default

    i have the U27=62X0820 bios in my 5170 but it only allows me to configure a 720 K 3.5" drive, not a 1.44 MB drive. not sure why

  5. #5
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    Quote Originally Posted by afaiello View Post
    i have the U27=62X0820 bios in my 5170 but it only allows me to configure a 720 K 3.5" drive, not a 1.44 MB drive. not sure why
    Try using GSETUP.
    http://members.dodo.com.au/~slappane...are/GSETUP.ZIP

  6. #6

    Default

    I just got my IBM "bible" (well it has a lot of info anyway) and I am not sure if this has been posted here already but here goes.
    This comes from the Service Information Manual, page 9-21, 5170 System Information and has the BIOS part number per model and per serial number range.
    It talks about the models 068, 099, 239, 319 and 339.

    If anyone wants to I can scan the pages to a pdf or something.

    Ow and then there is also the AT/370 (just reading from the manual).
    My collection of brochures : http://classic.technology

  7. #7
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    I understand that there were after market bios for the 5170. Does anyone have any links or info about them? I believe Award had a bios that went in the 5170.

    I've come up blank doing searches.

    framer

  8. #8
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    Quote Originally Posted by framer View Post
    I understand that there were after market bios for the 5170. Does anyone have any links or info about them? I believe Award had a bios that went in the 5170.
    I've come up blank doing searches.
    See the bottom of http://members.dodo.com.au/~slappanel555/bios.htm

  9. #9
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    I just got an IBM 5170. After opening I noticed it doesn't have the original bios, but has two EPROMS with Quadtel bios instead. Can't find anything about that bios being in a 5170. I found the original bios at http://www.minuszerodegrees.net/bios/bios.htm, but before I empty the 'Quadtel'-eproms and load the correct bios in there I was wondering if anyone has information about this Quadtel bios and or is interested in a dump of these roms.

  10. #10
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    Quote Originally Posted by Erwin-c64 View Post
    I just got an IBM 5170. After opening I noticed it doesn't have the original bios, but has two EPROMS with Quadtel bios instead. Can't find anything about that bios being in a 5170. I found the original bios at http://www.minuszerodegrees.net/bios/bios.htm, but before I empty the 'Quadtel'-eproms and load the correct bios in there I was wondering if anyone has information about this Quadtel bios and or is interested in a dump of these roms.
    I'd be interested in a dump of the ROMS... do you have an EPROM programmer, or would you just dump them using debug and have me split them manually?

    EDIT: I see that modem7 put it on his page... nevermind. I should've checked first XD.

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