tea6219@evtprp0b (Terry E. Acker) (08/31/90)
I currently have a 16Mhz 386SX clone, to which I would like to add more memory. The memory chips I now have are rated at 80ns. I want to add a memory card (such as an Intel Aboveboard) and I want to know if 80ns chips are required on the card. If the bus speed is only 8Mhz, couldn't I use slower chips without inserting "arteficial" wait-states? I am not a h/w person, so any help would be greatly appreciated. |----------------------------------------------------------------| |Terry Acker | |Boeing Commercial Airplanes ....uunet!bcstec!evtprp0b!tea6219 | |M/S 03-87, P.O. Box 3707, Seattle, WA 98124-0346 | |----------------------------------------------------------------|
shwake@raysnec.UUCP (Ray Shwake) (09/01/90)
tea6219@evtprp0b (Terry E. Acker) writes: >I currently have a 16Mhz 386SX clone, to which I would like to add >more memory. The memory chips I now have are rated at 80ns. I >want to add a memory card (such as an Intel Aboveboard) and I want >to know if 80ns chips are required on the card. If the bus speed is >only 8Mhz, couldn't I use slower chips without inserting "arteficial" >wait-states? I am not a h/w person, so any help would be greatly >appreciated. I currently run a NEC 386/20 with 2 MB of 80 ns RAM in a dedicated 32-bit slot. Given that the system has NO expansion potential without resorting to NEC's outrageously expensive daughter-card, I've resorted (when I REALLY need more RAM) to using my Intel Aboveboard 286/PS card, with 2 MB of 120 ns RAM residing in a 16-bit slot. The system recognizes the memory just fine, though it slows processing. (I assume wait states have been added to accommodate the differing memory speeds.) I understand, however, that not all systems will work in this fashion. Some reportedly will simply IGNORE your faster RAM and live off your slower RAM. Who knows, some may not run at all!