From: mahmha@crl.com (Mark A. Horton) Subject: Re: Adaptec 1542B vs 1542C vs 1740 Date: 21 Sep 1993 20:19:45 -0700
$ Burkhard Kohl (buk@taz.de) wrote:
: $ Burkhard Kohl (buk@taz.de) wrote:
: : Well the 1542C supports SCSI-2 whereas the B does not. Furthermore 1542C allows
: : you to enter the SCSI-select program for test and configuration purposes from
: : ROM at boot time, so you don't need SCSI-select utilities :-)
: : --
: Sorry, but thats just wrong. Of course both adaptors are SCSI-2. Sorry again.
: To prevent being flamed I'll withdraw my stupid statement
: One of the main differences between B and C is the SCSI select feature which
: can entered during boot time by just pressing Ctrl-A. This feature allows you to
: modify the settings of the card (e.g. disabling the host bus termination,
: selecting the DMA transfer rate, testing the bus, and a lot more) without
: changing any jumpers and without the need of any other utility progs.
: Actually the 1542C allows a slighty higher DMA transfer rate (10 Mb/s instead
: of 8 Mb/s) but this feature is only of theoretical use, because the bus is
: not affected - the recommend setting for most hardware combinations is still 5 Mb/s.
A IMHO, once the card is configured and the jumpers set, I never need
to fiddle about with it again. Therefore, I've been happy with the
B model... although for the first-timer, the setup utilities are nice
rather than mucking about with the juumpers! But you can get some
good deals on the Bs now if the local mercchants have them -- I paid
$180.00 (us) for a new one a few days agago - as opposed to 220+
-- Mark
: --
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: _/ _/ _/ _/ buk@taz.de
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: _/ _/ _/ _/ Germany
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