VOGONS


First post, by TimWolf

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I want to used this:

https://www.ebay.com/itm/Coprocessor-IIT-4C87 … 0-/333352131386

Probably on a 386 motherboard that has a regular PGA socket on Opti 82C495SLC chipset.

Do I need to use this:

http://www.chipquik.com/store/product_info.ph … ucts_id=3600004

Or can it be more like these? The last link is cheapest but all the pics have bent pins.

https://www.newark.com/multicomp/mc-68plcc/pl … y-me-pd-mi-alte

https://www.ebay.com/itm/SOCKET-PLCC-68-PIN-T … MP/392086765222

https://www.ebay.com/itm/10pcs-PLCC68-68-Pin- … CE/392453418852

Thanks in advance!

Reply 1 of 3, by Anonymous Coward

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This is the one you want:

https://www.ebay.com/itm/SOCKET-PLCC-68-PIN-T … MP/392086765222

However, be aware that these PLCC type FPUs for 386DX systems are pretty bloody uncommon, so I would recommend you solder in a regular 68 pin PGA socket to your board, and then just plug the plcc 88 socket into that socket. If you solder the PLCC68 to the board, you'll be limited to pretty much just that IIT FPU.

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 2 of 3, by TimWolf

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@Anonymous Coward, Thank you! Yes, my Opti boards already have the PGA sockets on there, but I didn't know if the sizing was the same or if the adapter needed to be the wider one with the PCB on it. So the straight down pins and relative size should be just about the same between the 68 PGA / PLLC?

Thanks for the clarification!