Date: Sat, 7 Oct 1995 16:54:41 -0400 From: dennis@etinc.com (dennis) To: Mark Hittinger <bugs@ns1.win.net> Cc: hackers@freebsd.org Subject: re: VLB Disk Controllers Message-ID: <199510072054.QAA24822@etinc.com>
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>> >> Adaptec, Buslogic. Any possitive or negative comments on the drivers would >> be welcome. >> > >I have had problems with vlb cards running above 33 MHZ. The effect appears >like the loss of interrupts or extreme interrupt latency. I have seen this >especially bad on amd 486dx2/80 (vlb clk 40mhz) and 486dx2/100 (vlb clk 50mhz). >I suspect the problem would exist on 486dx50 as well. > >The effect seems to be very pronounced on vlb disk controller cards with >other i/o on board. > One big issue with VLB is that you have to know how to tune the bus. Most MBs have tuning parameters to overcome these problems. Dennis ---------------------------------------------------------------------------- Emerging Technologies, Inc. http://www.etinc.com Synchronous Communications Cards and Routers For Discriminating Tastes. 56k to T1 and beyond. Frame Relay, PPP, HDLC, and X.25
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