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From: amorsin@cs.vu.nl (A.W.Morsink)
Newsgroups: comp.sys.amiga.hardware
Subject: Sync SCSI transfer support in A2091?
Keywords: Sync SCSI A2091
Message-ID: <9854@star.cs.vu.nl>
Date: 6 May 91 12:18:29 GMT
Sender: news@cs.vu.nl
Lines: 16

Does anyone know if it's possible to use synchronous transfers (SCSI) on the
CBM A2091 controller? It is supported by the Quantum ProDrive HD, rite? I ask
this because I recently came across a utility called "battmem" that enables
A3000 users to "initiate syncronous SCSI" by flipping a bit in it's battery
back-upped RAM.

How much difference with the 3000 design is there? Is it just a software pro-
blem that could be fixed?

I am planning to buy an A2630 board, how much of the transfer rate that can be
attained is a result of sync. vs async transfers (all limited by the ZorroII
bus speed since it can't 32-bit-DMA into the A2630's memory)?

Thanks,
Marco Niese
(Using: amorsin@swi.psy.uva.nl)