From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 27 Oct 1995 10:50:50 -0400
From: Peter Van Epp vanepp@sfu.ca
Subject: datasheets for the CMD640b and RZ1000 PCI IDE chips
Topicbox-Message-UUID: 30b1269a-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19951027145050.egWqDM_RsZL7DkFvolejgNBpTN0bt_R5coBxjYyBtR8@z>

In comp.os.plan9 you write:

>I've been unable to get the datasheets for these chips from the respective
>manufacturers so I can turn off prefetch and, in the case of the CMD at least,
>enable the second controller. If someone has either the datasheets and could
>FAX them to me (+1 908 582 4417) or can supply the missing parts of the 
>following pseudo-code I'd be most grateful. Thanks.

>	if controller is one of the above
>		read some PCI config register
>		alter some bits
>		write the config register back

	I saw an article in the local free computer paper that said both of 
these chips have a number of bugs. A set of test programs and places for
discussion are listed as follows:

the article itself

 ftp.cdrom.com/.4/os2/incoming/eidete16.zip

	The author is Roedy Green (Roedy@bix.com)

PC tech essay:

http://www.mei.microm.com/rz1000/rz1000.txt

Pat Duffy's Web site

hhtp://warp.eecs.berkeley.edu/os2/workbench/work.htm


Peter Van Epp / Operations and Technical Support 
Simon Fraser University, Burnaby, B.C. Canada