Thread View: alt.comp.bios
4 messages
4 total messages
Started by Chainsaws and Code
Sat, 05 May 2001 17:50
DMA UNIT #1 ERROR - help?
Author: Chainsaws and Code
Date: Sat, 05 May 2001 17:50
Date: Sat, 05 May 2001 17:50
17 lines
1799 bytes
1799 bytes
I have an Everex 486 SX/33. Two days ago, it booted up fine, but now upon boot up, I see the POST info and memory/cache check. As soon as the RAM count is finished, the display switches to a nasty big bold text video mode and displays the message: DMA UNIT #1 ERROR SYSTEM HALTED The computer is a 486 with AMI BIOS (from 1986/7), and upon research of the error, I wasn't able to find much except this is a "Fatal Error"... duh. :) Anybody know how to fix this or how it may have came to happen in the first place? Any sugestions would be appreciated. Thanks, Dan
Re: DMA UNIT #1 ERROR - help?
Author: Ken Zboyan
Date: Sat, 05 May 2001 18:35
Date: Sat, 05 May 2001 18:35
33 lines
2560 bytes
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Chainsaws and Code wrote:
> I have an Everex 486 SX/33. Two days ago, it booted up fine, but now upon
> boot up, I see the POST info and memory/cache check. As soon as the RAM
> count is finished, the display switches to a nasty big bold text video
> mode and displays the message:
>
> DMA UNIT #1 ERROR
> SYSTEM HALTED
>
> The computer is a 486 with AMI BIOS (from 1986/7), and upon research of
> the error, I wasn't able to find much except this is a "Fatal Error"...
> duh. :)
>
> Anybody know how to fix this or how it may have came to happen in the
> first place? Any sugestions would be appreciated.
>
> Thanks,
> Dan
Dan,
You are ready for a new mother board. On your MB is a device called a
DMA controller, it sounds like the POST has determined this is failing. You
should be able to acquire a similar MB or better for $10 or so. I would look
for a Pentium MB if you are going to need to replace your current one.
Ken
--
I intend to live forever......So far, so good.
Re: DMA UNIT #1 ERROR - help?
Author: J Hayward
Date: Sat, 05 May 2001 19:25
Date: Sat, 05 May 2001 19:25
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2303 bytes
Hello,
More then likely the DMA controller integrated into the motherboards
chipset has failed. Only way to fix it is to replace the motherboard. :-(
You would need a hardware diagnostic program, like AMIDIAG or similar to
find out for sure what has failed.
Regards,
Jim H
Chainsaws and Code wrote:
> I have an Everex 486 SX/33. Two days ago, it booted up fine, but now upon
> boot up, I see the POST info and memory/cache check. As soon as the RAM
> count is finished, the display switches to a nasty big bold text video
> mode and displays the message:
>
> DMA UNIT #1 ERROR
> SYSTEM HALTED
>
> The computer is a 486 with AMI BIOS (from 1986/7), and upon research of
> the error, I wasn't able to find much except this is a "Fatal Error"...
> duh. :)
>
> Anybody know how to fix this or how it may have came to happen in the
> first place? Any sugestions would be appreciated.
>
> Thanks,
> Dan
>
>
>
Re: DMA UNIT #1 ERROR - help?
Author: J Hayward
Date: Sat, 05 May 2001 19:29
Date: Sat, 05 May 2001 19:29
32 lines
2293 bytes
2293 bytes
Hello,
More then likely the DMA controller integrated into the motherboards
chipset has failed. Only way to fix it is to replace the motherboard. :-(
You would need a POST diag card to find out what has failed.
Regards,
Jim H
Chainsaws and Code wrote:
> I have an Everex 486 SX/33. Two days ago, it booted up fine, but now upon
> boot up, I see the POST info and memory/cache check. As soon as the RAM
> count is finished, the display switches to a nasty big bold text video
> mode and displays the message:
>
> DMA UNIT #1 ERROR
> SYSTEM HALTED
>
> The computer is a 486 with AMI BIOS (from 1986/7), and upon research of
> the error, I wasn't able to find much except this is a "Fatal Error"...
> duh. :)
>
> Anybody know how to fix this or how it may have came to happen in the
> first place? Any sugestions would be appreciated.
>
> Thanks,
> Dan
>
>
>
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