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Michael Campbell
Guest
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 Posted: Mon Apr 16, 2007 11:54 pm Post subject: Vintage Gateway2000 4DX-33: Disable On Board Video? |
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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! |
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Ben Myers
Guest
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| Posted: Mon Apr 16, 2007 11:54 pm Post subject: Re: Vintage Gateway2000 4DX-33: Disable On Board Video? |
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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 <no@spam.net> wrote:
| Quote: | 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! |
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| Back to top |
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Michael Campbell
Guest
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| Posted: Mon Apr 16, 2007 11:55 pm Post subject: Re: Vintage Gateway2000 4DX-33: Disable On Board Video? |
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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:
| Quote: | 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 <no@spam.net> 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! |
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Michael Campbell
Guest
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| Posted: Wed Apr 18, 2007 6:25 am Post subject: Re: Vintage Gateway2000 4DX-33: Disable On Board Video? |
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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:
| Quote: | 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 <no@spam.net> 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! |
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Ben Myers
Guest
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| Posted: Wed Apr 18, 2007 6:27 am Post subject: Re: Vintage Gateway2000 4DX-33: Disable On Board Video? |
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Michael,
No email from you yet. Here's my email address: ben_myers@charter.net . 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 <no@spam.net> wrote:
| Quote: | 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 <no@spam.net> 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! |
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