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- Path: mhaynes.interlog.com!user
- From: mhaynes@interlog.com (Martin Haynes)
- Newsgroups: comp.sys.amiga.emulations
- Subject: Oh that Emplant. The SCSI problem continues.
- Date: Wed, 13 Mar 1996 13:38:18 -0500
- Organization: Dead Philosophers' Union
- Message-ID: <mhaynes-1303961338180001@mhaynes.interlog.com>
- NNTP-Posting-Host: mhaynes.interlog.com
-
- I know it has been a while since anyone has complained about any
- Emplant SCSI problems but here we go again. Maybe myself and others
- should start a c.s.a.e.crazy.emplant.scsi newsgroup...
-
- Oh well here goes:
-
- System: 18 meg A4000/EC030 Buster '090 rev :^(
- Emplant Deluxe with software ver. 5.5
- 2meg EGS Spectrum Gfx card
- 80 meg IDE/850 meg Quantum SCSI (not apple specific)
- Toshiba internal 2x CDROM
- -------------------------
-
- I updated the LOGIC brand SCSI chip found on the card ages ago, when the
- incompatibility was discovered at UU, but still I have not been able to
- get the SCSI controller functioning properly on the Amiga or MAC sides of
- my system.
-
- Originally I had an 80 meg Quantum hooked up to the Emplant. I would get
- periodic checksum errors reported on the Amiga side and excessive Finder
- Bus Errors on the Mac side. I took the checksum errors to be the fault of
- the (old) drive and dismissed them, they were annoying, but there was no
- data loss and the HD behaved otherwise normally. The MAC errors I took to
- be the result of a necessarily imperfect emulation-- I had the internal
- Toshiba CDROM connected to the Emplant's SCSI and that worked fine.
- After I got the SCSI upgrade chip (NEC I believe), my belief
- that the problem lay in the drive was reinforced.
-
- When I recently got the 850 however, I changed my mind. No matter how I tried,
- I could not get the drive to work with the Emplant, with or without the
- Toshiba connected to the SCSI port, with or without the Emplant's termination
- jumper enabled, with or without the Qunatum/Toshiba as the last physical device
- on the chain etc., etc...
-
- The drive barely got through a Format (after prep in hdtoolbox empscsi.device)
- and eventually I gave up, resorting to a mothballed a2091 controller and
- a software patch to fix the DMA problems (vb2091 for anyone interested.
- works amazingly and best of all, patches the speed problems for the
- emulation as well
- cf. Aminet).
-
- Surprise, surprise, not only did the new HD perform beautifully, the old one
- did as well; no more checksum errors, no more finder errors and best of all,
- the drive is now auto-mounting. The Mac rarely crashes now and a few
- apps. that I thought were useless are now functioning fine. The toshiba BTW,
- is still hooked up to the Emplant (I know, it doesn't make sense).
-
- Any ideas? I have an old '09 BUSTER chip that I am beginnig to suspect,
- but I do not now how to go about getting a replacement. My EGS Spectrum
- card works in Zorro III mode (at least Sysinfo lists it as such) so I wonder.
- I don't have an MMU as I said, but I thought that was only a performance issue,
- and besides, the drive malfunctions on the Amiga side as well.
-
- I'd like to get a negative scanner for the Mac
- but I can't afford to shell out that much cash and not
- have it work...The a2091 does the job, but the DMA fix uses alot of memory,
- especially on the Mac side where memory must be contiguous.
-
- Any info at all will be helpful, please repond.
-
- Thanks in advance
- -martin
-
- What is the general impression of Mac Pro BTW?
- Like most UU customers I wait for feedback before purchasing :^)
-