First post, by alexthekid
On many old 286 mainboards and also on ISA graphics cards memory upgrades are possible via ICs (for example with the 71C4256).
Usually these boards / graphics cards have DIP sockets (dual in-line package).
I already have SOJ 20(26) memory chips (small-outline J-leaded package) and DIP-chips are kind of expensive at the moment. SOJ 20(26) means a SOJ26 format with the 3 middle pins missing on each side:
Does anybody have an idea for a convenient adapter? I was thinking about something like this: https://www.amazon.de/sourcing-map-1-27MM-0-6 … +dil+pcb&sr=8-2
but it is hard to find SOJ20(26) to DIP 20. I thought about soldering the SOJ-chips in a new DIP20 socket and then plugging this assembly into the mainboard/ graphics card sockets... this would be cheap but a lot of filigree soldering. So maybe there is a better way?
