VOGONS


Reply 20 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie
jakethompson1 wrote on 2020-10-09, 02:16:

There should be three extra jumpers to set for a WB CPU. I believe these connect the WB/WT#, HITM#, and CACHE# pins. You can read a bit about what changes were made to the 486 pinout to accommodate WB it here. http://datasheets.chipdb.org/SGS%20Thomson/x86/486/4193.PDF

Tks Jake!

(I kinda deserve the newbie badge!)

I have found these pages on the manual which would point differences on JP28, 29 and 30 from a standard DX4-100:

160221336500294998529059680748.jpg
Filename
160221336500294998529059680748.jpg
File size
1.21 MiB
Views
697 views
File license
Fair use/fair dealing exception
1602213201933192914956691484976.jpg
Filename
1602213201933192914956691484976.jpg
File size
1.14 MiB
Views
697 views
File license
Fair use/fair dealing exception

Tryed that P24D pin-out (green jumpers)

16022136147341532968475338024819.jpg
Filename
16022136147341532968475338024819.jpg
File size
998.79 KiB
Views
697 views
File license
Fair use/fair dealing exception

But still ended up with this:

16022134705418688438154709707887.jpg
Filename
16022134705418688438154709707887.jpg
File size
1.53 MiB
Views
697 views
File license
Fair use/fair dealing exception
16022144970785486596197580633867.jpg
Filename
16022144970785486596197580633867.jpg
File size
1.76 MiB
Views
696 views
File license
Fair use/fair dealing exception

Any suggestions on wherelse I should poke on this board?

I've also done the BIOS update for the AMI Dec 1995 version (from an Award Bios) but still no juice!

TIA

Reply 22 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie
jakethompson1 wrote on 2020-10-09, 03:39:

Weird, and you definitely have a V1.7 board?
I'm using the same jumpers for my Am5x86, except for JP31 which needs the 2x setting which it interprets as 4x.

Yep! V1.7 here! Just like the one in the 2nd post on this thread!

Maybe a BIOS thing?

16022160338511277387534822230668.jpg
Filename
16022160338511277387534822230668.jpg
File size
1.28 MiB
Views
692 views
File license
Fair use/fair dealing exception

TIA,

Ricardo

Reply 23 of 119, by jakethompson1

User metadata
Rank Oldbie
Rank
Oldbie

I'm using the 12/01/1995 BIOS I uploaded earlier in this thread. I think the "X" version out there works too. Even if it were possible to misconfigure the BIOS somehow, I don't think it's possible to do it so badly that it would change the CPUID.
You said the CPU is definitely an &EW right? No missing pins?
Out of ideas otherwise, maybe try an Am5x86 if you can get one. They're faster too!

Reply 24 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie

I did the same for the bios - just used the one that was linked here. As for the &EW, it does says that on the IC. I'd love to try one Am5x86, although they are pretty rare to find here in Brazil.

I'll sleep over this and see if someone also throws in new ideas!

Thanks again!

Reply 25 of 119, by Deksor

User metadata
Rank l33t
Rank
l33t

Wait you have the original manual ? Can you scan it please 😁
The only ressources we have are HTML pages and MTL pages but no original manual scans.

Trying to identify old hardware ? Visit Ultimate Retro - Project's thread The Ultimate Retro project - a stason.org/TH99 alternative

Reply 26 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie
Deksor wrote on 2020-10-09, 08:37:

Wait you have the original manual ? Can you scan it please 😁
The only ressources we have are HTML pages and MTL pages but no original manual scans.

I have the manual for the DX-6900 - which I understand is one of the versions of the M912. This manual was from my board when I was a kid - and I no longer have it. It is NOT the one that came with my current board (ie my board came with an Award BIOS and the Manual has comments on AMI).

I'll scan it through the weekend and post it.

Best,

RC

Reply 27 of 119, by cyclone3d

User metadata
Rank l33t++
Rank
l33t++

I should probably scan my manual as well. It was originally for the v1.4 board but there are some inserts and a bunch of notes for the 1.7 board.

The AMI BIOS is better as it actually supports larger HDDs.

I can't get either working reliably with cache enabled with the POD83 or the Evergreen AMD 5x86 133 upgrade.

Waiting on some new EEPROM chips to arrive so I can try the latest BIOS. The AMI one I currently have seems like a slightly older compared to the latest BIOS and I don't have any EEPROM chips that I was able to get to POST with the newest AMI BIOS.

I did find I actually have a second v1.7 board in one of my "spare" systems when I was going through stuff yesterday so I plan on taking that one out and seeing if it has a different BIOS.
That system came to me with a Cyrix DX4-100 installed so I'll be testing with that first.

Another thing.. I haven't been able to get the DUAL BIOS thing working either. It only seems to work with the AWARD BIOS.

Yamaha YMF modified setupds and drivers
Yamaha XG resource repository - updated November 27, 2018
Yamaha YMF7x4 Guide
AW744L II - YMF744 - AOpen Cobra Sound Card - Install SB-Link Header

Reply 28 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie

Alright fellas,

I've scanned the manual, but the file is larger than the allowed 5Mb here. I was not able to login on the vogonsdriver.com to upload there (I guess it is a different access allowed). I have uploaded it to the "vintage PC Enthusiasts" Facebook group. Still under moderation by the time I'm writing this, BUT it may have been released by the time you read this.

Anywhere else I should upload that would work with the forum?

https://www.facebook.com/groups/VintagePCEnthusiasts/files

As for the scan: I tried my best for having it organized, but I just don't know how to fix the huge 1st page. Tried a couple of tricks but couldn't make it better and my scanner was not very friendly today.

Best,

Ricardo Contieri

Reply 29 of 119, by Deksor

User metadata
Rank l33t
Rank
l33t

I made a improved version that's been ocr-ed and is now available right here http://www.win3x.org/uh19/motherboard/show/573 😀

Trying to identify old hardware ? Visit Ultimate Retro - Project's thread The Ultimate Retro project - a stason.org/TH99 alternative

Reply 30 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie

Just to add to the thread: I couldn't make the board recognize the WB in that processor. And to just found out that I have a relabeled processor hiding the real specs! I got so in doubt of what the processor was, that I decided to remove it. Took the cooler out, the thermal paste with isopropyl alcohol and surprise: a remarked processor!

Already started a dispute with the seller (Mercado Livre, a sort of eBay from Brazil). Probably the seller sourced from China and didn't have a clue about what had in his hands...

20201010_215519.jpg
Filename
20201010_215519.jpg
File size
386.19 KiB
Views
633 views
File license
Fair use/fair dealing exception
20201010_223042.jpg
Filename
20201010_223042.jpg
File size
1.18 MiB
Views
633 views
File license
Fair use/fair dealing exception

So bare with me kids: if your processor looks too nice, you might have been fooled!

Best,

Ricardo

Reply 31 of 119, by jakethompson1

User metadata
Rank Oldbie
Rank
Oldbie

Interesting! I kind of thought of that when I started asking if it could be missing pins but also thought there was no way.
I wonder whether it was remarked recently or back in the 90s when it feels like that might have been more worthwhile...
Are there any telltale signs on the underside that would have told you it's a WT?
Go for an Am5x86 this time? 😁 Wonder why those aren't popular in .br?

Reply 32 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie
jakethompson1 wrote on 2020-10-11, 02:04:
Interesting! I kind of thought of that when I started asking if it could be missing pins but also thought there was no way. I wo […]
Show full quote

Interesting! I kind of thought of that when I started asking if it could be missing pins but also thought there was no way.
I wonder whether it was remarked recently or back in the 90s when it feels like that might have been more worthwhile...
Are there any telltale signs on the underside that would have told you it's a WT?
Go for an Am5x86 this time? 😁 Wonder why those aren't popular in .br?

I have no clue when it was remarked. The looks was great before I cleaned it! And came quite neatly packed. It did look like a pulled IC though.

20201010_235731.jpg
Filename
20201010_235731.jpg
File size
1.35 MiB
Views
631 views
File license
Fair use/fair dealing exception

We were not big fans in AMDs back in the days here in Brazil - we thought they were just the "competitors/cloners" and not the "originals". I guess that Intel was better at branding their products around here than AMD.

And to top that: I'm trying to rebuild a computer I had when I was in my teens.

Ale 1994_14aninhos3.jpg
Filename
Ale 1994_14aninhos3.jpg
File size
569.91 KiB
Views
631 views
File license
Fair use/fair dealing exception

Cheers!

Reply 33 of 119, by Nexxen

User metadata
Rank Oldbie
Rank
Oldbie

I have a bios release date 12/02/1995D
Ami date 07/25/1994

The IBM Cx86C 100 that I have shows as 66mhz. I can't set it to 100mhz, won't go past boot screen and freezes.
Speedsys gives a score of 31.30, and 39.22 for Intel Dx4 100.

But is the one that has fake cache. I'll try to save it.

PC#1 Pentium 233 MMX - 98SE
PC#2 PIII-1Ghz - 98SE/W2K

Reply 34 of 119, by Nexxen

User metadata
Rank Oldbie
Rank
Oldbie
Nexxen wrote on 2020-10-11, 14:55:
I have a bios release date 12/02/1995D Ami date 07/25/1994 […]
Show full quote

I have a bios release date 12/02/1995D
Ami date 07/25/1994

The IBM Cx86C 100 that I have shows as 66mhz. I can't set it to 100mhz, won't go past boot screen and freezes.
Speedsys gives a score of 31.30, and 39.22 for Intel Dx4 100.

But is the one that has fake cache. I'll try to save it.

I tried an ami flash utility (ver 895) but the chipset is not supported.
Wich utility should I use to have it work?
Thanks

PC#1 Pentium 233 MMX - 98SE
PC#2 PIII-1Ghz - 98SE/W2K

Reply 35 of 119, by cyclone3d

User metadata
Rank l33t++
Rank
l33t++

Are you sure you have an EEPROM and not just an EPROM on the board? All of the ones I have came with EPROM.

I ordered a bunch of EEPROMs and just waiting for them to arrive from China.

Yamaha YMF modified setupds and drivers
Yamaha XG resource repository - updated November 27, 2018
Yamaha YMF7x4 Guide
AW744L II - YMF744 - AOpen Cobra Sound Card - Install SB-Link Header

Reply 36 of 119, by Nexxen

User metadata
Rank Oldbie
Rank
Oldbie
cyclone3d wrote on 2020-10-11, 21:01:

Are you sure you have an EEPROM and not just an EPROM on the board? All of the ones I have came with EPROM.

I ordered a bunch of EEPROMs and just waiting for them to arrive from China.

I have no idea of what I have.

I'm short on other things and I'll get back to it in a few days. I hope that putting 256kb o real cache will actually work. After 25 years I don't sweat it and I'm happy things are sorting out well.

Thanks in advance.

Last edited by Nexxen on 2020-10-13, 10:25. Edited 1 time in total.

PC#1 Pentium 233 MMX - 98SE
PC#2 PIII-1Ghz - 98SE/W2K

Reply 37 of 119, by ricardo.contieri

User metadata
Rank Newbie
Rank
Newbie
Nexxen wrote on 2020-10-11, 14:55:
I have a bios release date 12/02/1995D Ami date 07/25/1994 […]
Show full quote

I have a bios release date 12/02/1995D
Ami date 07/25/1994

The IBM Cx86C 100 that I have shows as 66mhz. I can't set it to 100mhz, won't go past boot screen and freezes.
Speedsys gives a score of 31.30, and 39.22 for Intel Dx4 100.

But is the one that has fake cache. I'll try to save it.

Have you checked the multiplier jumpers? Looks like they are set for 2x and not 3x.

As for the BIOS, maybe you will need to use a recorder such as the TL866 and get new EEPROMs, as that generstion of machines still didn't take advantages from the flash memory technology back then.

Best!