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Thread: Dos Issue...I think !!!

  1. #1
    Join Date
    Mar 2006
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    Angry Dos Issue...I think !!!

    So,I have a IBM 5150 which runs perfect.....has 10 mg Hard Drive...running Dos 3.3. The other day when I started it up.......Instead of going directly to "C" prompt....it prints the line......" f600 ROM" then the "C" prompt.......?????? Runs perfect otherwise???? checked all cables ,plugs etc. Even re-wrote autoexec, but to no avail !!!!! Anyone got any ideas? I have changed "NOTHING" on this computer in months.....just started with this message a couple of days ago.

    HEEELP

  2. #2

  3. #3
    Join Date
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    Default

    Bit-rot...???

    --T
    Teach your children how to think, not what, and hold 'em close, not tight.
    _____________________________________________

    Please visit the Vintage-Computer Wiki. Contributers welcome.

  4. #4

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    Maybe the previous owner put MS-DOS on ROM?

    EDIT: Sorry, reread & saw the mistake...
    Last edited by atari2600a; July 10th, 2006 at 11:17 PM.
    http://trs80hack.ytmnd.com/ YTMND: TRS-80 Hacking Secrets Revealed!!!

    There are 10 types of people in this world: Those who understand binary, & those who don't.

    http://mtac.profusehost.net/
    http://mtac.profusehost.net/forum/index.php

  5. #5
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    Damn, just when you were beginning to redeem yourself!
    Focus on the V-C forum game, it showz off your inate intelligence & creativity so much better than replying to vintage computer qwestionz in which you have too little experience to contribute anything meaningful.
    BTW, take this as a left-handed compliment...I really like where you're going with the game. If you have any specific questions about early systems, don't be bashful about asking.

    --T
    Last edited by Terry Yager; July 17th, 2006 at 02:06 PM.
    Teach your children how to think, not what, and hold 'em close, not tight.
    _____________________________________________

    Please visit the Vintage-Computer Wiki. Contributers welcome.

  6. #6

    Default

    Error Code - F600 ROM
    Computer - PC
    Location of Faulty ROM - U29


    Found here:

    http://support.microsoft.com/default...Ben-us%3B76922

    You should try to get chip out and clean it's connectors.
    I don't know what's in U29, it could be BASIC...
    This is hardware issue I think.

  7. #7
    Join Date
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    Chilliwack,BC,Canada eh
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    Talking Got It...

    Ok...Im "On It".......I'll check it out and advise.......Thanx for the help.

    Dave

  8. #8
    Join Date
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    Smile Its Running Again...

    Actually,always was running....just had error code....(see first post). Anyways,Running PERFECT now !!!!!! Took Lukes advice.....went and checked out error codes etc. I striped out Daughter Cards etc...and what ever was in the way......got out my handy dandy little book of chip locations.....found U29.....cleaned up whole Motherboard....removed chip and replaced it after cleaning iit up(along with socket(?).put it all back together....same problem !!! SOo....went down to my workshop.....dug out my "Parts" machine.....poped out U29....cleaned it up...Installed it my "Baby" and IT WORKS PERFECT! So my parts machine now needs a U29 chip..... I put the BAD one in just to see what happened.....It now has error code....So,I guess I'll be lookin for a U29 Chip sooner or later.....Thanx Again Luke.

  9. #9

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    No problem, just googled a bit.

    Wow, this chip isn't BASIC, this is BIOS...
    How it can run with BIOS damaged?

  10. #10

    Default

    Part of the BASIC interpreter is in the BIOS chips of the machine ..

    For anybody who wants a good overview of how an IBM PC works, get Peter Norton's 'Inside the IBM PC'. It explains all of this stuff.

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