Subject: Re: 2nd Announcement: cheap fast Alpha PC164 boards available
To: None <firstname.lastname@example.org>
From: Wilko Bulte <email@example.com>
Date: 04/16/1999 22:26:08
As Feico Dillema wrote ...
> Your message dated: Fri, 16 Apr 1999 12:48:28 EDT
> >It's not just 36-bit, it's FPM memory. I don't know what the difference is, but
> >I know it's not compatible. (I believe the SparcLX also uses FPM memory, and
> >I've tried 32-bit SIMMS in it with no luck.)
> FPM == Fast Page Memory. It was the `standard' memory for workstations
> and PCs before EDO and SDRAM became popular. The 4 extra bits are for
> parity checking and have been dropped by most PC-manufacturers some
> years ago to save a few bucks. I think a lot of '486 machines needed
> 36 bit memory at the time. Some manufactorers worked around it by
> producing `fake' parity memory; 32 bit with some circuitry to similate
> the parity. AFAIK that won't work on the Alpha's.
It won't as the extra bits are on the Alpha used for ECC, not for parity.
Groeten / Cheers,
| / o / / _ Arnhem, The Netherlands
|/|/ / / /( (_) Bulte WWW : http://www.tcja.nl
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