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Wanted: ST-RAM board for the Atari TT030

Posted: Wed Sep 19, 2018 10:45 pm
by dhedberg
Hi,

Just got my new TT setup properly but it has only the built-in 2MB ST-RAM and I'd like to have at least 4MB ST-RAM. Anyone interested in selling me a working 2MB or 8MB ST-RAM board for the TT?

Thanks,
Daniel

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Thu Sep 20, 2018 1:13 am
by stormy
Why not just upgrade it? Lynxman sells kits.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Thu Sep 20, 2018 2:55 pm
by dhedberg
What kind of kit is this? Where can I find more information?

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Thu Sep 20, 2018 3:14 pm
by frank.lukas
no kits. It is a Upgrade PCB to mod a Atari 2MB DIL package Ram Board to 8MB with SMD chips.
eingebaut_klein.jpg

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Thu Sep 20, 2018 8:56 pm
by dhedberg
Oh, sounds interesting, but I don't have a 2MB board to mod (yet). I only have the 2MB that is present on the motherboard. However those memory chips are in DIL sockets. 16*128k. Would it be possible to replace those with 16*256k or 16*512k chips to achieve 4MB or 8MB total ST-RAM?

Is Lynxman still selling these boards?

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 5:18 am
by stormy
Oh I didn't realise you didn't have the stram board at all. Just message Lynxman he might even have one for sale.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 7:49 am
by dhedberg
I did. Let's see what comes out of it.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 7:56 am
by frank.lukas
You can remove the onboard 2MB ST Ram and solder two 4MB PS/2 Simms in, so you have 8MB ST Ram.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 11:21 am
by dhedberg
frank.lukas wrote:You can remove the onboard 2MB ST Ram and solder two 4MB PS/2 Simms in, so you have 8MB ST Ram.
Sounds like it would be quite a mess. Do you have pictures of that mod? Would like to keep this TT fairly clean as it's in mint condition.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 11:23 am
by frank.lukas
@tuxie has a Atari TT with 8MB on the Mainboard.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 11:29 am
by dhedberg
Thanks. Will try and reach him.

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 11:45 am
by frank.lukas
It is a lot of work solder the two ps/2 Simm in. The ST Ram is 64bit wide ...

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 2:38 pm
by Gaiyan

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 6:12 pm
by frank.lukas

Re: Wanted: ST-RAM board for the Atari TT030

Posted: Fri Sep 21, 2018 6:34 pm
by dhedberg
I rather not touch the motherboard. I think I'll try and find a 2MB board and upgrade it to 8MB. Should be fairly straight-forward as long as I find the chips. Thanks for your help guys!
So, still looking for a 2MB board, or 8MB board for that matter!