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Back to forum Reply to this topic Go to last reply Posted By unclouded on 2020-04-25 04:05:21  Expansion connector pin pitch What are the specifications for the expansion connector in the 264-series? I.e. what's the pin pitch and card thickness? Posted By gerliczer on 2020-04-25 16:26:22  Re: Expansion connector pin pitch According to a scanned page of a Hungarian magazine: width 52 mm, pitch ~1.98 mm (78 mil?), thickness 1.4 mm. It can be found here: ftp://ftp.zimmers.net/pub/cbm/plus4/schematics/connectors-1.jpg Posted By MMS on 2020-04-25 16:29:22  Re: Expansion connector pin pitch AFAIK 1.98mm is the pitch (=0.08inch) and the thickness is the same as on C64, 1,57mm. The ATARI ST ROM module connector has a same pitch, but with much less pins, and noone used it. Someone mentioned that the PC's PCI connector is exactly the double pitch, so if every second pin is covered/removed, than it will do the job. Maybe it could be utilized to make port expander too. Posted By unclouded on 2020-07-25 08:43:29  Re: Expansion connector pin pitch Do they mean PCIe rather than PCI? I had a look at some datasheets just now and PCI seems to be 1.27mm between centres and PCIe 1.00mm between centres, which would be close to half of 1.98mm. Back to top Reply to this topic Copyright © Plus/4 World Team, 2001-2024. Support Plus/4 World on Patreon