Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!hybrid!torag!utdoe!generic!pnet91!taob
From: taob@pnet91.cts.com (Brian Tao)
Newsgroups: comp.sys.apple2
Subject: Re: DMA?
Message-ID: <613@generic.UUCP>
Date: 17 Apr 91 05:15:08 GMT
Sender: root@generic.UUCP
Organization: People-Net [pnet91], Etobicoke, ON
Lines: 11


    Since we are back on the topic of DMA devices for the time being, I have a
question concerning the RAMFast DMA SCSI card.  I've got it hooked up to a
Quantum 100-meg HD.  Using Prosel-16, I can get close to 600K/second on block
reads, but some reason, block WRITES max out at barely 150K/second.  I realize
that writing takes longer than reading, but 4 times longer?!?!  DMA is turned
on, I have a fully-populated Chinook RAM4000 card, no RAM disk, and I'm using
the GS/OS RAMFast driver.  Any suggestions?

Brian T. Tao   *B-) |  t569taob@bluffs.scar.utoronto.ca  | "Though this be
U of Metro Toronto  |               - or -               |  madness, yet there
Scarberia, ON       |        taob@pnet91.cts.com         |  is method in 't."