VOGONS


How about a MR-BIOS ROM file repository?

Topic actions

Reply 260 of 268, by matze79

User metadata
Rank l33t
Rank
l33t

Thanks for making this Collection, saved my Day 😀

MrBios:

MrBios.jpg
Filename
MrBios.jpg
File size
246.69 KiB
Views
141 views
File license
CC-BY-4.0

Ami BIOS:

ami.jpg
Filename
ami.jpg
File size
247.65 KiB
Views
141 views
File license
CC-BY-4.0

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 261 of 268, by Anonymous Coward

User metadata
Rank l33t
Rank
l33t

It seems to have made a big difference for your memory scores (at least according to speedsys). What chipset does your board use?

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 262 of 268, by matze79

User metadata
Rank l33t
Rank
l33t

https://stason.org/TULARC/pc/motherboards/C/C … 86-33-50-L.html
OPTI 495B Chipset

AMI BIOS has no Options for RAM or Cache and has WS on RAM and Cache Default.

Also Games show Speedup, improvment is great.

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 263 of 268, by bjwil1991

User metadata
Rank l33t
Rank
l33t

On my OPTi 495SX board, I cannot get MR BIOS to work at all. I can get it to set up just fine, but after the RAM count, it locks up. Not sure if it has anything to do with the EPROM speed or if it's something else. However, I did replace the RAM about a couple of months ago and left the MR BIOS on the back burner until I know if it was the RAM that caused it to lock up in the first place or if it's something else.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to FX-8350
Twitch: https://twitch.tv/retropcuser

Reply 264 of 268, by GigAHerZ

User metadata
Rank Oldbie
Rank
Oldbie
bjwil1991 wrote on 2021-10-12, 07:55:

On my OPTi 495SX board, I cannot get MR BIOS to work at all. I can get it to set up just fine, but after the RAM count, it locks up. Not sure if it has anything to do with the EPROM speed or if it's something else. However, I did replace the RAM about a couple of months ago and left the MR BIOS on the back burner until I know if it was the RAM that caused it to lock up in the first place or if it's something else.

If you have that capability, just one thing you can try, it never hurts: Try to change the keyboard controller. Try something older (maybe from 286 or 386) and try something newer. (maybe something from a PCI based 486 board)
I've observed some weird issues with mr bios sometimes and the cause has often been not "fully-compatible" keyboard controller.
I don't know about features to look for, it has been just a trial and error process.

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 265 of 268, by bjwil1991

User metadata
Rank l33t
Rank
l33t

Sadly, the current keyboard controller is soldered on and it doesn't hurt to add a socket to the board so the controller can get swapped easily.

Thankfully, the board doesn't have any battery damage and the battery started to leak, but it wasn't that much (2 droplets on the grounding point, but it's a big area and it powered on fine when I did the initial test after I took the battery off). My other board, on the other hand, doesn't POST and I even attempted to use both the AMI BIOS and the MR BIOS on it to no avail and it turns out there's more damage under the XT 8-bit slots than I thought and the RAM slots are fine and dandy, plus it needs a recap everywhere where the damage is at from the battery aftermath.

I'll look for a particular keyboard controller and slap it in and see what happens and I'll even attempt the one from my LB386DX board and see if that does anything. Were there any MR BIOS keyboard controller ICs back then as well?

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to FX-8350
Twitch: https://twitch.tv/retropcuser

Reply 266 of 268, by GigAHerZ

User metadata
Rank Oldbie
Rank
Oldbie
bjwil1991 wrote on 2021-10-12, 09:20:

Were there any MR BIOS keyboard controller ICs back then as well?

I've seen some pictures on the internet and read about them from archives of mr bios web, but never seen or touched one myself.

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 267 of 268, by dataino.it

User metadata
Rank Member
Rank
Member

mrbios-1989-Z.BIN MR 1.52 EFAR41Y l - MR BIOS (r) V1.52 - Copyright (c) 1989-93 MRI - Microid Research, Inc. - ALL RIGHTS RESERVED - 9 ASI BIOS (r) Copyright (c) 1993 Seanix Technology Inc.

Attachments

Reply 268 of 268, by furan

User metadata
Rank Member
Rank
Member
GigAHerZ wrote on 2021-10-12, 09:37:
bjwil1991 wrote on 2021-10-12, 09:20:

Were there any MR BIOS keyboard controller ICs back then as well?

I've seen some pictures on the internet and read about them from archives of mr bios web, but never seen or touched one myself.

I installed one in my MR-BIOS-ified am386DX today. I don't think it makes a difference but it's cool to have a MR-BIOS BIOS and KBC. It works fine, but I am not sure if it is different in any useful way.

ruzqz7q.png

Still waiting on my sticker order to MR-BIOS-ify the EPROM