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- Path: sparky!uunet!stanford.edu!rutgers!cbmvax!mks
- From: mks@cbmvax.commodore.com (Michael Sinz)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: Problems with the A4000
- Message-ID: <35075@cbmvax.commodore.com>
- Date: 14 Sep 92 14:32:07 GMT
- References: <1992Sep12.083819.17967@news.iastate.edu>
- Reply-To: mks@cbmvax.commodore.com (Michael Sinz)
- Organization: Commodore, West Chester, PA
- Lines: 36
-
- barrett@iastate.edu (Marc N Barrett) writes:
- >
- > For about a week or so, I've been promising to post my detailed explanation
- ... more drivel from Marc...
-
- ... about IDE...
- >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. This is a reasonable effort to make the most of a bad
- >situation, IMO, but the simple fact is that a design like this must have cost
- >quite a lot to develop, and would not have been necessary had the A3000's
- >existing SCSI design simply been left in the design for the A4000.
-
- Well, Marc, you really know how to be completely wrong about things.
- I will not push the issues too much, but this is one that is so completely
- *wrong* that I had to tell the real story. (But then, if Marc ever
- posted something that was not all washed up, I would think the net would
- be worried that the "end of the world" was about upon us...)
-
- The IDE interface on the A4000 has no new hardware to do anything special other
- than standard IDE. In fact, it is functionally almost exactly the same as the
- A600. In fact, the driver for it is exactly the same source code with just
- a few equates different for the addresses of the registers. What you call
- the "SCSI" work-a-like was work that Randall had done even for the A600.
- This is why the IDE driver is called scsi.device. HDToolBox works with
- it unmodified. In fact, programs that do scsi-direct do too. And this
- is true in the A600 and the A4000.
-
-
- /----------------------------------------------------------------------\
- | /// Michael Sinz - Senior Amiga Systems Engineer |
- | /// Operating System Development Group |
- | /// BIX: msinz UUNET: mks@cbmvax.commodore.com |
- |\\\/// From the home of the irrational deadlines: |
- | \XX/ "It will take 2i weeks to do that project." |
- \----------------------------------------------------------------------/
-