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- Xref: sparky comp.unix.bsd:2521 comp.os.linux:6303
- Newsgroups: comp.unix.bsd,comp.os.linux
- Path: sparky!uunet!stanford.edu!rock!fletcher!boyd
- From: boyd@cs.unca.edu (Mark Boyd)
- Subject: Re: Query: Drivers for AHA >1522< ?
- Message-ID: <1992Jul21.151240.6572@cs.unca.edu>
- Organization: University of North Carolina at Asheville
- X-Newsreader: Tin 1.1 PL3
- References: <2A6B89E3.7DE5@tct.com>
- Date: Tue, 21 Jul 1992 15:12:40 GMT
- Lines: 22
-
- I also have a 1522, which I purchased used a year or so ago. At that
- time I asked Roy Neese ( I think I have his name right ) of Adaptec
- about the differences between the 1520 and the 1540 series. Roy is
- active in comp.periphs.scsi and is an excellent source of info on
- Adaptech controllers. He said that the major difference is that the
- 1540 series has its own, on board microprocessor.
-
- Now that is a big difference, from a programmers point of view,
- because it means that the 1520 drivers have to interact with the SCSI
- interface chip(s) directly, while the 1540 drivers interact with the,
- much higher level, interface provided by the microprocessor and its
- firmware. As a result, it is much harder to write drivers for the
- 1520 series.
-
- I think some programming information is available from Adaptech's
- technical Support BBS ((408) 945-7727 8 data bits, no parity, one stop
- bit ), but I'm not sure that it is enough to write a driver. I think
- Roy did mention a technical manual ($$) which does have all the
- necessary information. I decided not to pursue this, but I hope Chip
- will 8^). It would be nice to have source for 1522 driver.
-
- Mark
-