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Slot 1 GA-BX2000+ Motherboard problem

Posted on 2020-03-13, 11:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello all. I was tinkering with this pc last night. (Swapping around some GPUs) After I had finished I put the system back together and turned it on. The system posted as normal but all the white text was purple. Not like when a VGA cable is loose, actual purple with a few words still in white. …

Re: Bought these (retro) hardware today

Posted on 2020-03-13, 08:37

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The top card screams "I might be a Voodoo3 2000" to me. [...] That was my first thought, but after a good look around I don't see any V3s that match it exactly. Also, neither of my V3s (2k & 3k) have a 1.5V AGP key - AFAIK none of them did. I actually have some junky FX5200s that look more like …

Re: Bought these (retro) hardware today

Posted on 2020-03-12, 23:17

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just won this auction on ebay. I wonder if I was bidding vs any of you lot! Paid quite a bit more than I wanted to but got carried away and that case would suit many potential builds regardless of other included hardware. If it is a nice machine it could finally end my quest for a nice 486. No …

Re: Bought these (retro) hardware today

Posted on 2020-03-12, 23:00

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just won this auction on ebay. I wonder if I was bidding vs any of you lot! Paid quite a bit more than I wanted to but got carried away and that case would suit many potential builds regardless of other included hardware. If it is a nice machine it could finally end my quest for a nice 486.

Re: Micro ATX 486 - what's the degree of interest?

Posted on 2020-03-12, 20:45

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nitroraptor53 wrote on 2020-03-08, 16:19: https://i.ebayimg.com/images/g/ZtEAAOSwAKxWU3g2/s-l1600.jpg could this board be tweaked with an onboard CPU, remove to EISA slots, and a few other tweaks? I have 2 of those exact boards and the CPU comes on a seperate board that is again half the size of …

Re: 486 Hobby Project - PSU and other help!

Posted on 2020-03-12, 20:19

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There also appears to be an extremely bent pin on the external battery connector(Judging by its location) JP1 Can also see a few areas of rust. Have you checked the board for any damaged traces? This wont be why its not powering but could be issues once it does get power.

Re: 486 Hobby Project - PSU and other help!

Posted on 2020-03-12, 20:04

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AT psu doesnt get its on signal from the motherboard. perhaps that connector is for some sort of relay that allows a button to turn it on instead of a switch?

Re: 486 CPU upgrade

Posted on 2020-03-12, 17:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well this is certainly interesting! Once I have the cache figured out I will see if the seller is willing to ship to the UK for a reasonable price. I have ordered 4 TAG chips so will be able to see how many are in fact needed for 128kb and 256kb.

Re: 486 CPU upgrade

Posted on 2020-03-11, 17:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The absolute best processor you can get in there would be an AMD P75 Overdrive. I recently bought one from ebay and it works very well on my Alaris Cougar. I would add a small fan to it, though. It does tend to get a little spicy... Ah the trouble is my board has no voltage regulation so I am stuck …

Re: 486 CPU upgrade

Posted on 2020-03-11, 11:43

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Micron made 16kx4 cache chips. They were pretty commonly used as tag RAMs during the 486 era. MT5C1604 I think was the model number. The Cyprus chips you found most likely work too. With your help I had adjusted my search terms and now have 4 chips on the way for a touch over £15 which is not too …

Re: 486 CPU upgrade

Posted on 2020-03-10, 18:19

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Unfortunately I cannot find anything online about this motherboard. The board will post how it is currently but hangs as soon as it has moved from POST to go and boot. Can anyone suggest some chips that would work in those dip22 sockets? the only ones I can find are CY7C164-15PC I am guessing even …

Re: 486 CPU upgrade

Posted on 2020-03-08, 22:22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

After thinking about this system I decided to take a look at the cache area and it was unpopulated so I thought I would add some chips from a dead socket 7 system. One thing I am unsure of is the TAG chips. These are not present on the socket 7 system. Underneath the socket it is asking for 16K x 4 …

Re: 486 CPU upgrade

Posted on 2020-03-07, 15:43

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The confusion was that those are 169 pin when I was in the belief my cpu is 168. Thanks for the responses 😀

Re: 486 CPU upgrade

Posted on 2020-03-07, 12:08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you. In that case there are none on eBay UK! Might have to look further afield.

Re: 486 CPU upgrade

Posted on 2020-03-07, 10:52

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

but the socket says it can accept overdrive chips. Something I have never seen in person before. https://upload.wikimedia.org/wikipedia/commons/thumb/3/35/KL_Intel_Overdrive_DX40DPR100.jpg/800px-KL_Intel_Overdrive_DX40DPR100.jpg That's a 5V DX4-100 Overdrive CPU. They shouldn't be that hard to find …

Re: 486 CPU upgrade

Posted on 2020-03-07, 00:41

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tiido wrote on 2020-03-06, 23:59: Take a photo of the entire board, if no voltage regulator is visible anywhere the board is likely 5V only. Here is the board, there is some hidden under the drives but that is just where the cache sockets are.

486 CPU upgrade

Posted on 2020-03-06, 23:20

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello all. I have a 486 system I enjoy using but would really like it to upgrade it to the best it can be (before costs become silly) although my first pc was a 486 I am still fairly unfamiliar with the differing socket types and requirements etc. I blindly got a 486 dx4 100 for it without even …

Re: Bought these (retro) hardware today

Posted on 2020-03-06, 16:47

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Saw an add on FB market "does anyone buy old computers?" Well yes. I do! £30 later and I have picked this up: https://i.ibb.co/kMxg2Mk/compaq.jpg I am a sucker for matching monitors! I already have a compaq kb/mouse. Was very surprised to see an AGP slot although it appears to only take compaq …

Re: Bought these (retro) hardware today

Posted on 2020-03-05, 22:54

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks! I am trying to thin out my parts before I turn into a hoarder! (I think its way too late for that! :) ) I have had some pleasant interactions with some buyers and sellers on eBay and I often wonder if they frequent these forums. I have been scoping this thread to see if anyone posts …

Re: First haul: 486DX4 100MHz + MMX 200MHz! Questions about what I have.

Posted on 2020-03-05, 22:23

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I dont have the answer to any of your questions but I have to comment and say those are 2 beauties! Excellent finds and I hope you enjoy them

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