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- Path: FreeNet.Carleton.CA!de351
- From: de351@FreeNet.Carleton.CA (K. C. Lee)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Zip drive...~500K transfer rate?
- Date: 2 Apr 1996 12:20:02 GMT
- Organization: The National Capital FreeNet
- Sender: de351@freenet3.carleton.ca (K. C. Lee)
- Message-ID: <4jr61i$p5r@freenet-news.carleton.ca>
- References: <4j6hot$bf8@hobbes.compusult.nf.ca> <4j7e0l$3av@guava.epix.net> <4jalea$ru9@leol.net-link.net> <65641402%agos001@pn.itnet.it> <4jm5me$bt0@genesis.phantom.com> <4jq7l4$mu6@leol.net-link.net>
- Reply-To: de351@FreeNet.Carleton.CA (K. C. Lee)
- NNTP-Posting-Host: freenet3.carleton.ca
-
- Mike Williams (mikew@net-link.net) writes:
- >
- > Believe it. Taken right out of the Emplant documentation : "The SCSI interface
- > uses the popular 53C80 SCSI IC. It is a fast and reliable SCSI controller. It is not
- > SCSI-II. Transfer rates can be well over 1 megabyte per second depending on the
- > processor your Amiga has and how fast the device you are using is. ..."
-
- Didn't they had a lot of problems with timing and ended up using the
- slower AMD 5380 chips ? I believe there were some free downgrades in
- .emulations back then.
-
- > I tend to disagree with some of the claims: Specifically "fast and
- >reliable" and "well over 1 megabyte per second." On my 4000, the SCSI
- >port has NEVER worked
-
- The missing key phase is "if done correctly"... I have made my own SCSI
- controller for my A1000 using the similar XRDY wait state scheme and the
- slower AMD part that the Emplant uses.
-
- I managed to get 1.2 Meg/sec off my NEC drive on my 18MHz 020 A1000. It
- had been working fine for the past 2 months on my NEC 1 gig, Quantum Pro
- 40S, Pro105S, Sony 4X CDROM, IOmega ZIP. The low level SCSI code and the
- correct XRDY implementation PALs can make a lot of difference. I ended up
- writing my own low level driver from scratch.
-
- Did they say the Mac side can use the SCSI interfact just fine ? ;) ;) ;)
-
- K. C. Lee
-
-