How about a MR-BIOS ROM file repository?

Getting old software/games running on older hardware.

Re: How about a MR-BIOS ROM file repository?

Postby Auzner » 2018-3-22 @ 18:38

Thanks for the advice everyone. I will try dumping it again tonight as if it were a 28-pin 27c256:

Screen Shot 2018-03-22 at 12.36.21 PM.png


All these variants of the 28-pin!

512.png
Last edited by Auzner on 2018-3-22 @ 21:19, edited 1 time in total.
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Re: How about a MR-BIOS ROM file repository?

Postby keropi » 2018-3-22 @ 19:03

^ better try as 27C512 and see if you get duplicate data (2x32kb data)
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Re: How about a MR-BIOS ROM file repository?

Postby Anonymous Coward » 2018-3-24 @ 02:01

In my experience, almost all 386 BIOSes that use a single chip are the 512kbit variety.
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Re: How about a MR-BIOS ROM file repository?

Postby feipoa » 2018-3-24 @ 04:27

And 256kbit was largely for VGA ROM's?
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Re: How about a MR-BIOS ROM file repository?

Postby Anonymous Coward » 2018-3-24 @ 05:33

yup
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Re: How about a MR-BIOS ROM file repository?

Postby appiah4 » 2018-3-27 @ 13:20

Just dropping these two MR BIOS manuals here, I harvested them from the eSolutions web site; still poking and trying to find a way to get to the BIOS files :cool:

I have a board from 1991 with the MR BIOS on it, would anyone wager a guess as to what the HDD size limitation would be? I'll get a CF card of the according size. I'm thinking of playing it safe and going with 512MB which should be plenty enough for a DX2-66.. But if I can get away with 1 or 2GB, why not?
Attachments
mrb33x.zip
(1.8 MiB) Downloaded 45 times
mrb166.zip
(75.28 KiB) Downloaded 43 times
A500:+512K|ACA500+|C1084S
i386:Am386SX-25|4M|TVGA9000B|ES688
i486:U5S-33|8M|GD5428|YMF719/MUNT-Pi3
i586:P133|32M|S3T64+/MX2|V1|CT3980/32M
i686:K6-2/400|64M|V2/SLI|CT4500/32M
S370:P3-1200|384M|GF4Ti4200|MX300
S754:A3700+|2G|X1950PRO|SB0350
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Re: How about a MR-BIOS ROM file repository?

Postby clh333 » 2018-3-27 @ 19:27

I have a generic VLB board with a SiS 85C471 chip set . Can anyone say with certainty which of the indexed BIOSes fetaure that chip set?

Thanks for your replies.

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Re: How about a MR-BIOS ROM file repository?

Postby feipoa » 2018-3-28 @ 00:49

512 MB ok for your DX2-66 system? I need at least 2 GB. I use SCSI so the onboard BIOS limit is unimportant.
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Re: How about a MR-BIOS ROM file repository?

Postby Anonymous Coward » 2018-3-31 @ 13:59

appiah4 wrote:I am going to build a system with this board sometime in the near future, I will try to dump the bios with uniflash..

Image

For now, please see attached the copies I found of the latest and large HDD patched Mr BIOS bioses.


This board is supposedly based on Headland HT 340 "SHASTA" or possibly Opti 82C802G . Can you confirm which?
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Re: How about a MR-BIOS ROM file repository?

Postby keropi » 2018-3-31 @ 14:16

and why use uniflash for this? if the board runs then NSSI is better to make a BIOS dump
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Re: How about a MR-BIOS ROM file repository?

Postby feipoa » 2018-3-31 @ 21:56

Do you know what the benefits of NSSI copying a BIOS is compared to Uniflash?
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Re: How about a MR-BIOS ROM file repository?

Postby keropi » 2018-3-31 @ 22:56

not having to remove the IC and inserting it to a NIC to do the job?
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Re: How about a MR-BIOS ROM file repository?

Postby feipoa » 2018-4-01 @ 02:47

Doesn't uniflash work with most PC BIOSes in the computer?
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Re: How about a MR-BIOS ROM file repository?

Postby appiah4 » 2018-4-01 @ 05:20

Anonymous Coward wrote:
appiah4 wrote:I am going to build a system with this board sometime in the near future, I will try to dump the bios with uniflash..

Image

For now, please see attached the copies I found of the latest and large HDD patched Mr BIOS bioses.


This board is supposedly based on Headland HT 340 "SHASTA" or possibly Opti 82C802G . Can you confirm which?


It has the Headland chipset.
A500:+512K|ACA500+|C1084S
i386:Am386SX-25|4M|TVGA9000B|ES688
i486:U5S-33|8M|GD5428|YMF719/MUNT-Pi3
i586:P133|32M|S3T64+/MX2|V1|CT3980/32M
i686:K6-2/400|64M|V2/SLI|CT4500/32M
S370:P3-1200|384M|GF4Ti4200|MX300
S754:A3700+|2G|X1950PRO|SB0350
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Re: How about a MR-BIOS ROM file repository?

Postby Anonymous Coward » 2018-4-01 @ 13:55

Were there other 486 boards that used the HT340 chipset? Do they work with EDRAM as well?
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Re: How about a MR-BIOS ROM file repository?

Postby appiah4 » 2018-4-01 @ 14:36

Anonymous Coward wrote:Were there other 486 boards that used the HT340 chipset? Do they work with EDRAM as well?


This I do not know I only have experience with this one board.
A500:+512K|ACA500+|C1084S
i386:Am386SX-25|4M|TVGA9000B|ES688
i486:U5S-33|8M|GD5428|YMF719/MUNT-Pi3
i586:P133|32M|S3T64+/MX2|V1|CT3980/32M
i686:K6-2/400|64M|V2/SLI|CT4500/32M
S370:P3-1200|384M|GF4Ti4200|MX300
S754:A3700+|2G|X1950PRO|SB0350
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Re: How about a MR-BIOS ROM file repository?

Postby Auzner » 2018-4-08 @ 21:04

Here's the correct binary for the Forex 300 MR BIOS as a 27C512 (64kB as opposed to the 16kB)

27c512.PNG


Just recently I got several other motherboards so I ordered a USB programmer.

Motherboard photo:
download/file.php?id=42321&mode=view
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forex300.zip
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Re: How about a MR-BIOS ROM file repository?

Postby keropi » 2018-4-09 @ 11:15

thanks for the update Auzner - I'll fix my post with the new dump :)
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Re: How about a MR-BIOS ROM file repository?

Postby Anonymous Coward » 2018-6-21 @ 14:36

I think I finally tracked down the BIOS image for Macronix 305/306. It's for the Octek Jaguar V. It came from a Russian Hardware Museum site.

http://hwmuseum.pp.ua/index.php?route=hardware&dev=3

I think this image is actually floating around as an attachment on vogons somewhere, but it hasn't been added yet.
Attachments
Bios_rom_image_TMS27C512_JAGUAR_V.zip
For Octek Jaguar V Rev 1.4
(40.25 KiB) Downloaded 37 times
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Re: How about a MR-BIOS ROM file repository?

Postby keropi » 2018-6-24 @ 21:56

thanks Anonymous Coward , added the BIOS image in the 2nd post list
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