Toshiba libretto alternatives to the external dock and memory expansion? \ VOGONS

Toshiba libretto alternatives to the external dock and memory expansion?

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First post, by theshinyknight

Posted on 2023-12-02, 23:43

theshinyknight Offline

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As per title, I am curious to know if there is any alternative to the official memory expansion and dock, as they are proprietary connectors.

My device screen is pretty much quite dark and I am not sure how long it has to live, so if I can get a way to at least keep it alive once the screen is gone, and use also an external mouse and keyboard on my 70CT, that would be awesome.

I found the schematics for the expansion port but it is a proprietary connector, so no way to get that wired and make my own VGA + PS2 ports. Any user here that own a Libretto, that can give some advice? Thanks!

Reply 1 of 4, by Thermalwrong

Posted on 2023-12-03, 00:49

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Schematics? You sure you don't mean the service manual with the pinouts for the dock connector specified?

Reply 2 of 4, by theshinyknight

Posted on 2023-12-03, 01:06

theshinyknight Offline

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Thermalwrong wrote on 2023-12-03, 00:49:

Schematics? You sure you don't mean the service manual with the pinouts for the dock connector specified?

Aye, the pinout, sorry. What is on the maintenance manual found online

Reply 3 of 4, by rasz_pl

Posted on 2023-12-03, 03:10

rasz_pl Offline

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expansion dock ps2 mod https://web.archive.org/web/20070303065247/ht … internalps2port
internal ps2 mod https://web.archive.org/web/20070316192744/ht … k/ps2guide.html https://web.archive.org/web/20070305232607/ht … &page=0&ADMIN=1

Open Source AT&T Globalyst/NCR/FIC 486-GAC-2 proprietary Cache Module reproduction

Reply 4 of 4, by theshinyknight

Posted on 2023-12-03, 03:51

theshinyknight Offline

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Thanks; it seems that the first option is clearly not feasible as I do not have the dock; but the second could work.

The image show 2 wires (maybe 3?) being soldered on the motherboard, close to the audio chip, but I can't really tell where. Not sure if I am blind or am I missing something... PS2 connector should have a clock and data pin, plus the usual ground and 5V, which I assume you can take from the AC connector; so I guess that yellow wire goes on one of these SMD resistors where the OPL chip is, and the other yellow wire goes above where the screw is, somewhere? The grey wire is there too but does not seem to be going in a different place... Seems to be connected in the same place as the yellow wire.

For VGA out I guess it is more complex; as you have more wires 🙁

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