| ??? 09/09/08 01:13 Read: times |
#158102 - Thank's Responding to: ???'s previous message |
>In fact, this was the second source for the originally proposed >memory (I don't remember the manufacturer nor part number, sorry);
It was cypress SRAM... >however, any of it might be hard to get as this sort of memories >(synchronous SRAM) used to be used as processor (L1) cache for the >486 processor. As the L1 cache in PC is on-chip since the era of >Pentiums, there is no demand for these anymore. >You might be more lucky looking for fast asynchronous SRAMs (they >were used as cache in 386 based boards; but they are still used in >niche applications so they might be easier to find). (This is what >I have used in the (unpublished) pikoLA mentioned above.) You >might also try to find them on old PC motherboards. Will find that... >In any case, you will need to recreate quite a lot of that >project yourself - even the replacement of CPLD doesn't sound as >trivial for me... Think the problem are EMC..the CPLD already attached at the board so..the connection with harddisk cables. --------------------------------------------------------------- 32 channels..sufficient with our 40 pins PDIP package... Best Regards JBJ |
