OT memory too cheap to pass up

On 27 Jan 2001, Iggy Drougge wrote: > addon boards). Why shouldn't it be possible to make SDRAM to SIMM adapters?

SDRAM, FPM, and EDO are types of dynamic RAM. SIMM, DIMM, and SO-DIMM are types of memory card.

So I'm not sure what exactly you're asking. If you're talking about making an adaptor to plug DIMMs with EDO or FPM on them (which are pretty rare now) into a system designed for SIMM EDO or FPM RAM, that could probably be done. If you're talking about making an adaptor for plugging DIMMs with SDRAM on them into a system designed for SIMM EDO or FPM RAM, you're out of luck unless you design a specialised memory controller to drive the SDRAM signals (it can probably be done, but it'd take a lot of work). This has been something of a problem in the embedded systems world because most manufacturers have already stopped, or are planning to stop in the near future, all production of EDO and FPM RAM. However there are a great deal of embedded systems in production which have not been updated to use SDRAM (to do so would frequently mean moving to a whole new processor generation as older devices like the Z80 and 68000 family simply can't drive SDRAM without a specialised and complex external SDRAM controller).