Vintage Gateway2000 4DX-33: Disable On Board Video?

Discussion in 'Gateway' started by Michael Campbell, Apr 16, 2007.

  1. Hi, this is a followup to a news thread I started a while back. I am
    restoring on old Gateway2000 4DX-33 (33 MHz 486!). It has an on board
    Cirrus Logic video chip and 1 MB of video RAM. I have now acquired a
    Diamond Speedstar 64 ISA card, with 2 MB of video RAM and would like to
    use it instead (better resolution).

    However, I can't seem to figure out how to do this. I tried just
    plugging the card in - it did not simply take over from the on board
    stuff. In fact, the two video memories seemed to "fight" with each.
    While I still had video output from the onboard Cirrus Logic stuff (but
    none from the new Diamond card!) that video was really shaky/jittery. As
    soon as I took the Diamond card out, it was clean as a whistle again.

    I tried the BIOS, but no joy there either. There is no "disable on board
    video" setting there.

    So, I am down to hoping that there may be some motherboard jumpers that
    disable the Cirrus chip, or perhaps some deliberate damage I could do
    (cut a trace, bend a pin, whatever) to achieve the same result. However,
    I can't seem to find any identifying model name/number on the
    motherboard, making it difficult to find any documentation. I have
    scanned it carefully, looking for any obviously named jumpers - of
    course there are not any!

    Per the earlier thread, I have the square Intel made motherboard with
    the ISA slots up on a riser card that is perpendicular to the
    motherboard. Does anyone recognize this machine/motherboard, and perhaps
    still have some documentation on it?

    Thanks!
     
    Michael Campbell, Apr 16, 2007
    #1
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  2. Michael Campbell

    Ben Myers Guest

    Send me an email with your real email address in it and I can respond with a
    Microsoft Word attachment that contains the best info possible about the board
    you have.

    Unfortunately, back in the dark ages of 486s, it was not always possible to
    disable on-board video. Heck, some Pentium II systems with built-in video would
    even refuse to work with an add-on video card... Ben Myers

    On Mon, 16 Apr 2007 20:05:00 GMT, Michael Campbell <> wrote:

    >Hi, this is a followup to a news thread I started a while back. I am
    >restoring on old Gateway2000 4DX-33 (33 MHz 486!). It has an on board
    >Cirrus Logic video chip and 1 MB of video RAM. I have now acquired a
    >Diamond Speedstar 64 ISA card, with 2 MB of video RAM and would like to
    >use it instead (better resolution).
    >
    >However, I can't seem to figure out how to do this. I tried just
    >plugging the card in - it did not simply take over from the on board
    >stuff. In fact, the two video memories seemed to "fight" with each.
    >While I still had video output from the onboard Cirrus Logic stuff (but
    >none from the new Diamond card!) that video was really shaky/jittery. As
    >soon as I took the Diamond card out, it was clean as a whistle again.
    >
    >I tried the BIOS, but no joy there either. There is no "disable on board
    >video" setting there.
    >
    >So, I am down to hoping that there may be some motherboard jumpers that
    >disable the Cirrus chip, or perhaps some deliberate damage I could do
    >(cut a trace, bend a pin, whatever) to achieve the same result. However,
    >I can't seem to find any identifying model name/number on the
    >motherboard, making it difficult to find any documentation. I have
    >scanned it carefully, looking for any obviously named jumpers - of
    >course there are not any!
    >
    >Per the earlier thread, I have the square Intel made motherboard with
    >the ISA slots up on a riser card that is perpendicular to the
    >motherboard. Does anyone recognize this machine/motherboard, and perhaps
    >still have some documentation on it?
    >
    >Thanks!
     
    Ben Myers, Apr 16, 2007
    #2
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  3. Hi Ben,

    Thanks so much - I have sent you the requested email! I too am afraid
    that the board may not support any graceful way of doing this, which is
    why I am starting to consider intentional but focused "damage" I could
    do to the board to simply disable that chip.

    Thanks again, Michael


    Ben Myers wrote:
    > Send me an email with your real email address in it and I can respond with a
    > Microsoft Word attachment that contains the best info possible about the board
    > you have.
    >
    > Unfortunately, back in the dark ages of 486s, it was not always possible to
    > disable on-board video. Heck, some Pentium II systems with built-in video would
    > even refuse to work with an add-on video card... Ben Myers
    >
    > On Mon, 16 Apr 2007 20:05:00 GMT, Michael Campbell <> wrote:
    >
    >> Hi, this is a followup to a news thread I started a while back. I am
    >> restoring on old Gateway2000 4DX-33 (33 MHz 486!). It has an on board
    >> Cirrus Logic video chip and 1 MB of video RAM. I have now acquired a
    >> Diamond Speedstar 64 ISA card, with 2 MB of video RAM and would like to
    >> use it instead (better resolution).
    >>
    >> However, I can't seem to figure out how to do this. I tried just
    >> plugging the card in - it did not simply take over from the on board
    >> stuff. In fact, the two video memories seemed to "fight" with each.
    >> While I still had video output from the onboard Cirrus Logic stuff (but
    >> none from the new Diamond card!) that video was really shaky/jittery. As
    >> soon as I took the Diamond card out, it was clean as a whistle again.
    >>
    >> I tried the BIOS, but no joy there either. There is no "disable on board
    >> video" setting there.
    >>
    >> So, I am down to hoping that there may be some motherboard jumpers that
    >> disable the Cirrus chip, or perhaps some deliberate damage I could do
    >> (cut a trace, bend a pin, whatever) to achieve the same result. However,
    >> I can't seem to find any identifying model name/number on the
    >> motherboard, making it difficult to find any documentation. I have
    >> scanned it carefully, looking for any obviously named jumpers - of
    >> course there are not any!
    >>
    >> Per the earlier thread, I have the square Intel made motherboard with
    >> the ISA slots up on a riser card that is perpendicular to the
    >> motherboard. Does anyone recognize this machine/motherboard, and perhaps
    >> still have some documentation on it?
    >>
    >> Thanks!
     
    Michael Campbell, Apr 17, 2007
    #3
  4. Hey Ben, could you confirm that you received the email I sent? I haven't
    seen an email back from you, so I just wondering if my email to you got
    stuck in a spam filter or some such. Thanks!

    Michael Campbell wrote:
    > Hi Ben,
    >
    > Thanks so much - I have sent you the requested email! I too am afraid
    > that the board may not support any graceful way of doing this, which is
    > why I am starting to consider intentional but focused "damage" I could
    > do to the board to simply disable that chip.
    >
    > Thanks again, Michael
    >
    >
    > Ben Myers wrote:
    >> Send me an email with your real email address in it and I can respond
    >> with a
    >> Microsoft Word attachment that contains the best info possible about
    >> the board
    >> you have.
    >>
    >> Unfortunately, back in the dark ages of 486s, it was not always
    >> possible to
    >> disable on-board video. Heck, some Pentium II systems with built-in
    >> video would
    >> even refuse to work with an add-on video card... Ben Myers
    >>
    >> On Mon, 16 Apr 2007 20:05:00 GMT, Michael Campbell <> wrote:
    >>
    >>> Hi, this is a followup to a news thread I started a while back. I am
    >>> restoring on old Gateway2000 4DX-33 (33 MHz 486!). It has an on board
    >>> Cirrus Logic video chip and 1 MB of video RAM. I have now acquired a
    >>> Diamond Speedstar 64 ISA card, with 2 MB of video RAM and would like
    >>> to use it instead (better resolution).
    >>>
    >>> However, I can't seem to figure out how to do this. I tried just
    >>> plugging the card in - it did not simply take over from the on board
    >>> stuff. In fact, the two video memories seemed to "fight" with each.
    >>> While I still had video output from the onboard Cirrus Logic stuff
    >>> (but none from the new Diamond card!) that video was really
    >>> shaky/jittery. As soon as I took the Diamond card out, it was clean
    >>> as a whistle again.
    >>>
    >>> I tried the BIOS, but no joy there either. There is no "disable on
    >>> board video" setting there.
    >>>
    >>> So, I am down to hoping that there may be some motherboard jumpers
    >>> that disable the Cirrus chip, or perhaps some deliberate damage I
    >>> could do (cut a trace, bend a pin, whatever) to achieve the same
    >>> result. However, I can't seem to find any identifying model
    >>> name/number on the motherboard, making it difficult to find any
    >>> documentation. I have scanned it carefully, looking for any obviously
    >>> named jumpers - of course there are not any!
    >>>
    >>> Per the earlier thread, I have the square Intel made motherboard with
    >>> the ISA slots up on a riser card that is perpendicular to the
    >>> motherboard. Does anyone recognize this machine/motherboard, and
    >>> perhaps still have some documentation on it?
    >>>
    >>> Thanks!
     
    Michael Campbell, Apr 18, 2007
    #4
  5. Michael Campbell

    Ben Myers Guest

    Michael,

    No email from you yet. Here's my email address: . Now
    the spammers will go nuts and send me lots of offers for viagra and home loans.
    So what? I get enough of those offers already just getting the mail and
    watching TV.

    .... Ben Myers

    On Wed, 18 Apr 2007 01:25:47 GMT, Michael Campbell <> wrote:

    >Hey Ben, could you confirm that you received the email I sent? I haven't
    >seen an email back from you, so I just wondering if my email to you got
    >stuck in a spam filter or some such. Thanks!
    >
    >Michael Campbell wrote:
    >> Hi Ben,
    >>
    >> Thanks so much - I have sent you the requested email! I too am afraid
    >> that the board may not support any graceful way of doing this, which is
    >> why I am starting to consider intentional but focused "damage" I could
    >> do to the board to simply disable that chip.
    >>
    >> Thanks again, Michael
    >>
    >>
    >> Ben Myers wrote:
    >>> Send me an email with your real email address in it and I can respond
    >>> with a
    >>> Microsoft Word attachment that contains the best info possible about
    >>> the board
    >>> you have.
    >>>
    >>> Unfortunately, back in the dark ages of 486s, it was not always
    >>> possible to
    >>> disable on-board video. Heck, some Pentium II systems with built-in
    >>> video would
    >>> even refuse to work with an add-on video card... Ben Myers
    >>>
    >>> On Mon, 16 Apr 2007 20:05:00 GMT, Michael Campbell <> wrote:
    >>>
    >>>> Hi, this is a followup to a news thread I started a while back. I am
    >>>> restoring on old Gateway2000 4DX-33 (33 MHz 486!). It has an on board
    >>>> Cirrus Logic video chip and 1 MB of video RAM. I have now acquired a
    >>>> Diamond Speedstar 64 ISA card, with 2 MB of video RAM and would like
    >>>> to use it instead (better resolution).
    >>>>
    >>>> However, I can't seem to figure out how to do this. I tried just
    >>>> plugging the card in - it did not simply take over from the on board
    >>>> stuff. In fact, the two video memories seemed to "fight" with each.
    >>>> While I still had video output from the onboard Cirrus Logic stuff
    >>>> (but none from the new Diamond card!) that video was really
    >>>> shaky/jittery. As soon as I took the Diamond card out, it was clean
    >>>> as a whistle again.
    >>>>
    >>>> I tried the BIOS, but no joy there either. There is no "disable on
    >>>> board video" setting there.
    >>>>
    >>>> So, I am down to hoping that there may be some motherboard jumpers
    >>>> that disable the Cirrus chip, or perhaps some deliberate damage I
    >>>> could do (cut a trace, bend a pin, whatever) to achieve the same
    >>>> result. However, I can't seem to find any identifying model
    >>>> name/number on the motherboard, making it difficult to find any
    >>>> documentation. I have scanned it carefully, looking for any obviously
    >>>> named jumpers - of course there are not any!
    >>>>
    >>>> Per the earlier thread, I have the square Intel made motherboard with
    >>>> the ISA slots up on a riser card that is perpendicular to the
    >>>> motherboard. Does anyone recognize this machine/motherboard, and
    >>>> perhaps still have some documentation on it?
    >>>>
    >>>> Thanks!
     
    Ben Myers, Apr 18, 2007
    #5
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