VOGONS


First post, by Downer

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Howdy,

I acquired an ATC6240V-01 motherboard sometime ago and have been using it for a retro build of mine. It has a 440bx chipset but when I look for information about this board most of the things I find about it is that it should be a VIA chipset. I am looking to upgrade the bios so that a SL4KL pentium 3 is read correctly on boot up (it doesn't say its 1000 mhz but does while in windows 98). I have read elsewhere that golden PCB means it could be a ver 2 or 3 but the Bios suggests it is a version 1. I have a found a "ver. 2" on the board but with everything pointing that this should be a VIA chipset I am a bit stumped.

https://www.elhvb.com/mboards/a-trend/bios/index.html this website has a few different versions of bios but I am very leery of flashing any of those because of the conflictions of information.

Any information about this board would be awesome.

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Reply 1 of 9, by AmiSapphire

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Um, weird. Searching that VER:1.0r01 WB1 string brings up conflicting info by itself.

However, going through my A-Trend BIOS stash and reading them in a BIOS editor, the date on that screenshot seems to match the ATC6240M v3 BIOS version 3.0r02. It seems your board is actually an ATC6420M V3: PCB rev R06, despite the PCB silk printing. But I need the BIOS ID located on the bottom left screen area on POST to confirm before going any further.

It should presumably match this:
BIOS info: 01/09/2000-i440BX-W977-62400000C-EC

The BIOS message is informational only.
BIOS message: 6240 VER:3.0r02 WB1

Also, A-Trend was placing stickers over the board revision silkscreen with the revision they made depending on the design, and yours may be missing that sticker. (ATC6240M v2: PCB rev R05, ATC6240M V3: PCB rev R06, and ATC6420V-01 use the same PCB layout, hence the confusion.)

Edit: newer post corrects the mainboard PCB differences.

Last edited by AmiSapphire on 2021-09-30, 18:58. Edited 1 time in total.

Computer in my collection that had too much work done is... Compaq Armada 1573DM!

- Original DSTN panel replaced with an HPA panel (now gone)
- Left hinge repaired twice
- Front panel replaced thrice
- Replaced busted inverter
- Chassis replacement

Reply 2 of 9, by Robin4

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I have also this kind of motherboard.

My Atrend board is called: ATC6240 without anything.
Its a gold kind of board v2. Because its Intel 440BX it should be ATC6240M

~ At least it can do black and white~

Reply 3 of 9, by Downer

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AmiSapphire wrote on 2021-09-28, 15:52:

It should presumably match this:
BIOS info: 01/09/2000-i440BX-W977-62400000C-EC

Sure enough, it does say "i440BX-W977-62400000C-EC" on post. Since it does say that do you believe flashing it with a bios for a "ATC6240M V3: PCB rev R06" would work rather than brick it?

Thank you for pointing me in the right direction. Also thank you for the information about A-trend in general. It totally makes sense they would use reuse boards and use stickers to cover up model numbers.

Reply 4 of 9, by AmiSapphire

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Downer wrote on 2021-09-29, 13:01:
AmiSapphire wrote on 2021-09-28, 15:52:

It should presumably match this:
BIOS info: 01/09/2000-i440BX-W977-62400000C-EC

Sure enough, it does say "i440BX-W977-62400000C-EC" on post. Since it does say that do you believe flashing it with a bios for a "ATC6240M V3: PCB rev R06" would work rather than brick it?

Thank you for pointing me in the right direction. Also thank you for the information about A-trend in general. It totally makes sense they would use reuse boards and use stickers to cover up model numbers.

That string does point to that particular version board, though I would come up with a backup plan in any case something goes wrong.
BIOS updates are located here: http://www.win3x.org/uh19/motherboards/7078

ATC-6240BX BIOS Released Note.doc: with the only BIOS note for rev R06 preserved.

ATC-6240 BX

This BIOS version 3.0r05 support for :
1. new Celeron ( so far 766 MHZ above )
2. Pentium III ( Coppermine ) up to 850 MHZ .
3. implement Win ME & Win 2000 Hibernate feature .
4. VIA Cyrix III CPU

--

Also I JUST noticed this note on the page I linked:

"backside of the motherboard near the DIMM slots gives PCB rev, only R06 has Coppermine support"

I wonder if it says some form of "R06" on the bottom of the board? No one person would normally think to take a photo of the bottom side of the board. However, I checked my own Atrend 6240M board, and sure enough, "391-6355-C00R03" was printed on the silkscreen. So mine is a rev R03 board. My board is a green color, however.

--

I'll also have to correct my own statement on the board layout, as I just have run into a picture of a gold version of the ATC-6240 with the earlier board layout that 6240M R01-R03 and 6240V-00 uses, possibly rev R05. (Ironically, they were adding stickers on those boards for the ATC-6240v-00.) So, only ATC-6240M V3: rev R06 and ATC-6240V-01 use the same board layout. Insane. The 6240M v2 board entry will need a photo change on win3x/Ultimate Hardware 2019, as it is the wrong photo for it.

It also seems I will have to update my own ATC-6240 page with this info.

Computer in my collection that had too much work done is... Compaq Armada 1573DM!

- Original DSTN panel replaced with an HPA panel (now gone)
- Left hinge repaired twice
- Front panel replaced thrice
- Replaced busted inverter
- Chassis replacement

Reply 5 of 9, by Downer

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AmiSapphire wrote on 2021-09-29, 15:43:
That string does point to that particular version board, though I would come up with a backup plan in any case something goes wr […]
Show full quote
Downer wrote on 2021-09-29, 13:01:
AmiSapphire wrote on 2021-09-28, 15:52:

It should presumably match this:
BIOS info: 01/09/2000-i440BX-W977-62400000C-EC

Sure enough, it does say "i440BX-W977-62400000C-EC" on post. Since it does say that do you believe flashing it with a bios for a "ATC6240M V3: PCB rev R06" would work rather than brick it?

Thank you for pointing me in the right direction. Also thank you for the information about A-trend in general. It totally makes sense they would use reuse boards and use stickers to cover up model numbers.

That string does point to that particular version board, though I would come up with a backup plan in any case something goes wrong.
BIOS updates are located here: http://www.win3x.org/uh19/motherboards/7078

ATC-6240BX BIOS Released Note.doc: with the only BIOS note for rev R06 preserved.

ATC-6240 BX

This BIOS version 3.0r05 support for :
1. new Celeron ( so far 766 MHZ above )
2. Pentium III ( Coppermine ) up to 850 MHZ .
3. implement Win ME & Win 2000 Hibernate feature .
4. VIA Cyrix III CPU

--

Also I JUST noticed this note on the page I linked:

"backside of the motherboard near the DIMM slots gives PCB rev, only R06 has Coppermine support"

I wonder if it says some form of "R06" on the bottom of the board? No one person would normally think to take a photo of the bottom side of the board. However, I checked my own Atrend 6240M board, and sure enough, "391-6355-C00R03" was printed on the silkscreen. So mine is a rev R03 board. My board is a green color, however.

--

I'll also have to correct my own statement on the board layout, as I just have run into a picture of a gold version of the ATC-6240 with the earlier board layout that 6240M R01-R03 and 6240V-00 uses, possibly rev R05. (Ironically, they were adding stickers on those boards for the ATC-6240v-00.) So, only ATC-6240M V3: rev R06 and ATC-6240V-01 use the same board layout. Insane. The 6240M v2 board entry will need a photo change on win3x/Ultimate Hardware 2019, as it is the wrong photo for it.

It also seems I will have to update my own ATC-6240 page with this info.

I just took apart the PC, removed the motherboard and it did have "391-6355-C00R06" behind the Dimm slots.

So even after updating the bios to "3.0r05 " the motherboard may still see the SL4KL at post incorrectly since it still is not technically supported. Hmm I may just have to risk it and see.

Reply 6 of 9, by squelch41

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My 440bx doesnt recognise my 1.1GHz coppermine celeron properly at POST - it doesn't matter, it runs fine and correct speed is confirmed with both softfsb and cpuz

V4P895P3 VLB Motherboard and AMD 486 133MHz CPU
64mb RAM, CF 4Gb HDD,
Realtek 8019 ethernet + XT-IDE bios ROM, ES1869 soundcard, VLB multi-io card Cirrus Logic GD5428 1mb VGA

440bx MSI 6119, modified slocket , celeron 1.1GHz, 256mb SD-RAM, CF 4GB HDD

Reply 8 of 9, by AmiSapphire

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^ You're welcome. Now that I know that BIOS 3.0r05 unofficially supports 1GHz Intel Coppermine CPUs that use the 100MHz bus speed, that note has just been added to my A-trend ATC-6240 page.

Computer in my collection that had too much work done is... Compaq Armada 1573DM!

- Original DSTN panel replaced with an HPA panel (now gone)
- Left hinge repaired twice
- Front panel replaced thrice
- Replaced busted inverter
- Chassis replacement

Reply 9 of 9, by evasive

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The 6240M v2 board entry will need a photo change on win3x/Ultimate Hardware 2019, as it is the wrong photo for it.

Done

VIA manuals have been replaced by the 6240/6240M manual. Picture of your board has been added with credits link to your website. If you have additional stuff, just post away. Email is fine too.