Adaptec 1522 question

[neese at adaptx1.UUCP]

>/* ---------- "Re: Adaptec 1522 question" ---------- */
>jgd at rsiatl.UUCP (John G. DeArmond) writes:
>
>>I was recently in a large chain PC store the other day trying to make an
>>emergency SCSI controller purchase.  The store had the usual ST-02s and the
>>like and then one of the people in the service department pulled out an
>>Adaptec board labeled AHA1522.  This is a half-card configuration with 
>>a blue-million jumpers and a couple of ASIC chips.
>
>>I've since talked to someone else who said that the card is register
>>compatable with the 1542 and Roy's utilities should run.  Not wanting to
>>risk my money, I passed on the deal.  So my question is:  What is this
>>card?  How does it compare to the 1542?  What is a good price for the card?

Here's the poop.  The 1522 is a PIO SCSI adapter.  It is in no way shape
or form anywhere close to the 1542 adapter.  It is not software compatible.
It is not hardware compatible either.
The intent of this adapter was to provide a lower cost, high performance
solution for MS-DOS.  The 1542 is a nice adapter, but it is overkill for
MS-DOS.  The 1542 cannot be fully utilized under MS-DOS, but only under
those operating environments that support true multi-threading.
My utilities will not work with the 1522.  I am doing a port of them for the
1522, but not complete yet.

			Roy Neese
			Adaptec Senior SCSI Applications Engineer
			UUCP @  neese at adaptex
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