Daewoo AL486V-D BIOS needed

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Daewoo AL486V-D BIOS needed

Postby feipoa » 2018-12-24 @ 08:28

I have one of these boards with version 298A BIOS, however, I see one of these motherboards on eBay with version 299 BIOS. Anyone have BIOS version 299 or later from a Daewoo AL486V-D and can share the image?

Stickers with 295 on them have BIOS identification string: 26XYR version 1.4
Stickers with 298A on them have BIOS identification string: 2600P version 1.7
299?

EDIT: These BIOSes appear to be produced or distributed by or for Leading Edge Products Inc, https://en.wikipedia.org/wiki/Leading_E ... e_Products
Unfortunately, I cannot find a website for them on wayback.

Daewoo_AL486-D_motherboard.jpg
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2018-12-27 @ 22:00

Nobody have this BIOS? Apparently "299" is version 1.9. Attached is an image I found online.

WinPro-d_version_1.9_299.jpg
WinPro-d_version_1.9_299.jpg (37.41 KiB) Viewed 255 times
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 08:51

*bump*

Nobody have this "299" BIOS?

If anyone ends up buying this board from eBay, I'd be grateful if you could send me an image of the "299" BIOS. It is a fantastic board for 386+VLB. It doesn't have the 486 socket, which in my mind, makes it even better - PGA132 only. The jumpers are very simple compared to other 386 and 486 boards. Board works with SXL chips as well.
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Re: Daewoo AL486V-D BIOS needed

Postby GigAHerZ » 2019-1-08 @ 09:02

OT:
Woah, i didn't know VLB is even possible with 386 processors! I have understood it's specific to the 486 architecture...
Does VLB work with the real 386 processors, or is it enabled only with 486DLC processors?
"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 09:14

I'm not sure. I have only tested it with a 486DLC and 486SXL. I still have the board on my test bed, so I will try it with an Am386DX-40.
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 11:27

I am able to use the VLB graphics card with the Am386DX-40, however, to get the system to boot up, I had to set the "Cycle Check Point" to "Normal" instead of "Fast". Doing so nearly negates the performance benefit of using the VLB graphics card over an ISA graphic card.

The graphics cards utilised in this test were a CL-GD5434 ISA and an S3 Trio64 VLB. I used Doom shareware, timedemo 3, with the -nomouse and -nosound flags, although the drivers were loaded.

SXL-40
Cycle Check Point = Fast
VLB = 5215 = 14.3 fps
ISA = 6589 = 11.3 fps
26 % increase when using VLB on a 486SXL

386DX-40
Cycle Check Point = Fast
VLB = system would not boot up, although it would count memory, run SCSI BIOS. Hangs just before POST.
ISA = 10591 = 7.1 fps

386DX-40
Cycle Check Point = Normal
VLB = 10346 = 7.2 fps
ISA = 12192 = 6.1 fps

2.4% increase when using VLB on a 386DX
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Re: Daewoo AL486V-D BIOS needed

Postby GigAHerZ » 2019-1-08 @ 11:49

feipoa, thank you! Amazing thing.
386 with support (even if not very beneficial) is something i didn't think would exist.
"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!
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Re: Daewoo AL486V-D BIOS needed

Postby Tiido » 2019-1-08 @ 12:10

386 support is in the VLB standard, only things that 386 cannot support with VLB are caching related stuff due to lack of internal cache and burst transfers support since the CPU is incapable of doing them. 386 and 486 buses are very similar still, those unsupported things are matter of only few extra signal lines.
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Re: Daewoo AL486V-D BIOS needed

Postby jesolo » 2019-1-08 @ 12:19

@feipoa, is there perhaps a BIOS ID string appearing on the POST screen?
Based on the picture you posted, it appears to be AMI derived?
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 12:30

Yes, AMI-based. String here:

298A_BIOS.jpg
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Re: Daewoo AL486V-D BIOS needed

Postby jesolo » 2019-1-08 @ 12:49

Interesting - based on the BIOS ID string, it identifies itself as an ECS (Elitegroup)/PC Chips BIOS.
Let me scratch a bit around and see if I come up with something.
EDIT: Seems like there was another user on here that had the same motherboard: viewtopic.php?t=41428&p=389843
Maybe he still has it?
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 13:09

Daewoo = ECS? Hmm...

He has it, but its stowed away in the back of some storage area without easy access. He doesn't know when he'll get to it.
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Re: Daewoo AL486V-D BIOS needed

Postby BastlerMike » 2019-1-08 @ 15:57

Isn't this the same board as the ECS PANDA 386V ?
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Re: Daewoo AL486V-D BIOS needed

Postby jesolo » 2019-1-08 @ 17:01

It would appear so.
By using this info, I was able to track down another Vogons user that bought this particular motherboard (albeit with a different chipset - ETEQ). It would appear that there was also a MR BIOS for this chipset.
viewtopic.php?f=46&t=17341&hilit=interleaving&start=13480#p523270
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-1-08 @ 18:22

Unfortunately, that user hasn't been active in over a year. I remember sending him a PM months ago which went unread.
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Re: Daewoo AL486V-D BIOS needed

Postby zoinknoise » 2019-8-14 @ 00:25

i have uploaded v299 of this board's BIOS here.

viewtopic.php?f=46&t=60356&p=777010#p777010
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Re: Daewoo AL486V-D BIOS needed

Postby feipoa » 2019-8-14 @ 00:46

zoinknoise wrote:i have uploaded v299 of this board's BIOS here.

viewtopic.php?f=46&t=60356&p=777010#p777010

That is fantastic; thank you!
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