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- Newsgroups: comp.sys.amiga.misc
- Path: sparky!uunet!gatech!rpi!batcomputer!theory.TC.Cornell.EDU!riley
- From: riley@theory.TC.Cornell.EDU (Daniel S. Riley)
- Subject: Re: Problems with the A4000
- Message-ID: <1992Sep13.183502.26758@tc.cornell.edu>
- Sender: news@tc.cornell.edu
- Nntp-Posting-Host: theory.tc.cornell.edu
- Organization: Cornell Theory Center
- References: <1992Sep12.083819.17967@news.iastate.edu>
- Date: Sun, 13 Sep 1992 18:35:02 GMT
- Lines: 31
-
- In article <1992Sep12.083819.17967@news.iastate.edu> barrett@iastate.edu (Marc N Barrett) writes:
- >A4000's design, though, we also have to consider the costs involved in
- >designing the IDE design. These costs would have been practically zero if
- >the A4000 had simply used the same IDE design as the A600. The problem is
- >that it does not -- the IDE design used in the A4000 is a whole new design.
- >The new design was created by Randall Jessup, and includes extra hardware to
- >make the IDE interface and HD look somewhat like a SCSI interface and HD to
- >Amiga software.
-
- Marc, could you cite some sources for your contention that the IDE
- driver is a new design? I have been told that the driver to make IDE
- look like SCSI *is* in the A600--you can run HDToolBox (or RDPrepX, if
- you like) on the A600, pointed at the ide driver, and they will
- happily talk scsi-direct to it.
-
- As for the hardware, The SDMAC chip has always had hooks in it for
- AT/IDE style interfaces, so I doubt the hardware was a big deal.
-
- So it sounds to me like the IDE interface on the A4000 was not a big
- additional investment (*trivial* compared to the AA development
- costs).
-
- That said, I'll agree with one thing--going with IDE was still stupid.
- The A3000 has a killer scsi interface (once the driver bugs are fixed),
- which is a *major* asset for multimedia work, where high io-bandwidth
- and the CDROM support are needed. Moving to IDE for the A4000 makes
- no sense at all.
-
- --
- -Dan Riley Internet: dsr@lns598.tn.cornell.edu
- -Wilson Lab, Cornell University HEPNET/SPAN: lns598::dsr (44630::dsr)
-