SIPP & SIMM RAM chips database

[Teti]

Hi guys, I have processed a lot of data to generate out my database of vintage SIMM and SIPP DRAM chips and modules:

http://martenelectric.cz/simm-sipp-ram-chip-database.html

This should be handy for those brewing at home

 

[kerr]

Massive effort, well done! If you want to branch out to 40 PIN SIMMs (rare, proprietary RAM used in the Toshiba T5200), there's some pics on my github:

https://github.com/SpitFire-666/Toshiba-T5200/blob/main/README.md#memory-ram

 

[Teti]

Amazing, thank you for your feedback kerr. I will definitely add 40 PIN SIMMS to my database! I will go through your github page over the weekend. From what I can see at first glance these are normal chips but with different pinout? do you have pinout or datasheets to these sticks? Thanks again

 

[kerr]

Sorry I don't know much about the pinouts exactly but some madman managed to rig up 72-pin SIMMs, with some info here:

http://[URL]https://www.vogons.org/viewtopic.php?f=46&t=57998&p=647324&hilit=simm#p647324

[/URL]


EDIT: I found some specs in the maintenance manual - page 159:

http://www.minuszerodegrees.net/manuals/Toshiba/Other/Toshiba T5200 - Maintenance Manual.pdf

 

[Teti]

Yes I did check that out, it is remarkable piece of work. Just so you know I have already mapped chips on some of these modules and add you to contributions.
I have made my own 30 pin SIMMs and SIPPs hence need to map out chips produced. so far I have 4Mx9 SIMM, but would like to run production for 4M, 1M and then 1M SIPP modules which prices are like sky high on fleabay. £30 +

 

[mR_Slug]

Fantastic, great work. Bookmarked.

Small correction, on your 256K x 4 (1M) DRAM section, you have the package type in the notes field. Hope this helps.

 

[Teti]

Fantastic, great work. Bookmarked.

Small correction, on your 256K x 4 (1M) DRAM section, you have the package type in the notes field. Hope this helps.

Thank you, I haven't been improving it for last month, I think my database is almost complete, now I will focus on actual sticks.

 

[kerr]

Dunno if this is helpful, but the Toshiba T3200SX(C) uses semi-proprietary 30-pin SIMMs. You can "hack" standard modules to be accepted in the T3200SX by "cut the trace on the SIMM module that is connected to pin 28 (CASP line) and reconnect it to pin 2 (CAS line)." There's some info on my Github here:

Toshiba-T3200SX/README.md at main · SpitFire-666/Toshiba-T3200SX

Info, mods, disassembly of the Toshiba T3200SX portable computer - SpitFire-666/Toshiba-T3200SX

github.com