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).
--
------- Alex Holden -------
http://www.linuxhacker.org/
http://www.robogeeks.org/
Received on Sat Jan 27 2001 - 05:09:02 GMT