Help with identifying mobo

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wrecksan
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Help with identifying mobo

Post by wrecksan » Tue Jul 31, 2018 11:37 am

Hi all, apologies for my ignorance but I was wondering if it is possible to identify via these 2 (awkward) pictures, if I have the type of motherboard that can be upgraded to 4mb ram or not.

I know the pics are horrible, but I'm a bit reluctant to pull the entire thing apart without knowing much about it.

Thanks for your help!

https://imgur.com/QXpVdhP
https://imgur.com/Xrc4V1j
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exxos
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Re: Help with identifying mobo

Post by exxos » Tue Jul 31, 2018 11:47 am

Really need to see the whole board.. There are a LOT of revisions, some similar, some very different.

That actually looks to be 2 totally different motherboards ? CPU under the drive, then CPU not under the drive...
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rubber_jonnie
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Re: Help with identifying mobo

Post by rubber_jonnie » Tue Jul 31, 2018 11:55 am

It seems to be one of these: viewtopic.php?t=749

You can see C103175 printed on the board in this picture: https://imgur.com/Xrc4V1j

What you can't tell is the revision, but since you have it part disassembled, removing the top RF shield is quite trivial to do, it's just a few screws and some twist tabs, so you may as well go just a little bit further to see what you have.
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk
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wrecksan
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Re: Help with identifying mobo

Post by wrecksan » Tue Jul 31, 2018 2:45 pm

exxos wrote: ↑
Tue Jul 31, 2018 11:47 am
 That actually looks to be 2 totally different motherboards ? CPU under the drive, then CPU not under the drive...
I promise it is the same board, I just tilted the camera left and down a bit.
rubber_jonnie wrote: ↑
Tue Jul 31, 2018 11:55 am
 It seems to be one of these: viewtopic.php?t=749

You can see C103175 printed on the board in this picture: https://imgur.com/Xrc4V1j

What you can't tell is the revision, but since you have it part disassembled, removing the top RF shield is quite trivial to do, it's just a few screws and some twist tabs, so you may as well go just a little bit further to see what you have.
That's handy to know, I've actually reassembled this since, I had the board off a while ago when I took the pictures and put it back as the I wasn't allowed to leave an Atari in the middle of the living room :roll:

I'll have another look in a few days, as I'm busy/preparing for holiday at the moment.

Thanks so much for the responses and also 10/10 name rubber_jonnie :lol:
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rubber_jonnie
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Re: Help with identifying mobo

Post by rubber_jonnie » Tue Jul 31, 2018 2:51 pm

wrecksan wrote: ↑
Tue Jul 31, 2018 2:45 pm
That's handy to know, I've actually reassembled this since, I had the board off a while ago when I took the pictures and put it back as the I wasn't allowed to leave an Atari in the middle of the living room :roll:
What, you don't have a room in your house that's dedicated to Ataris?

:dizzy:
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk
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wrecksan
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Re: Help with identifying mobo

Post by wrecksan » Wed Aug 15, 2018 10:29 am

rubber_jonnie wrote: ↑
Tue Jul 31, 2018 2:51 pm
 What, you don't have a room in your house that's dedicated to Ataris?
Yet. I don't have a room dedicated to Ataris yet. :lol:
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rubber_jonnie
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Re: Help with identifying mobo

Post by rubber_jonnie » Wed Aug 15, 2018 12:36 pm

wrecksan wrote: ↑
Wed Aug 15, 2018 10:29 am
 Yet. I don't have a room dedicated to Ataris yet. :lol:
:lolbig: You'd better get on that ;)
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk
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