home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!rutgers!cbmvax!daveh
- From: daveh@cbmvax.commodore.com (Dave Haynie)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Amiga 3000 - Static Column RAM's
- Message-ID: <34952@cbmvax.commodore.com>
- Date: 9 Sep 92 18:36:32 GMT
- References: <PyFqqB2w165w@blackhl.hacktic.nl> <1992Sep8.080513.28019@ifi.uio.no>
- Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
- Organization: Commodore, West Chester, PA
- Lines: 22
-
- In article <1992Sep8.080513.28019@ifi.uio.no> eriks@ifi.uio.no (Erik Saastad) writes:
-
- >I thought that (at least on the older 3000's) there was a bug in ramsey.
-
- All A3000s have the same RAMSEY, and the same RAMSEY bug. This is a bug in
- page-detect mode (one of the modes that requires static column DRAM) which
- causes RAS precharge in conjunction with hard disk activity to sometimes last
- only 40ns, rather than the 80ns its supposed to last. We found this bug
- quite late because the software people had already determined that page-detect
- mode didn't buy anything with the 68030 and AmigaOS (other CPU/OS combinations
- could find this more more useful).
-
- >This bug does so that you will have no difference in performance with static or
- >page ram. Maybe this bug is corrected on newer 3000's ?
-
- All A3000s will run faster with static-column DRAM using RAMSEY's other special
- mode, burst mode. This has always worked.
-
- --
- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
- {uunet|pyramid|rutgers}!cbmvax!daveh BIX: hazy
- "Work like a horse, drink like a fish" - Psychefunkapus
-