src@scuzzy.in-berlin.de (Heiko Blume) (02/27/91)
mhoffos@janus.mtroyal.ab.ca writes: >Dumb question time: to do the DMA test on an Adaptec 1542B, do you have to >have a device attached to the controller? you don't need any device for the test. the board simply transfers data between the mainboard ram and it's own fifo memory. -- Heiko Blume <-+-> src@scuzzy.in-berlin.de <-+-> (+49 30) 691 88 93 public UNIX source archive [HST V.42bis]: scuzzy Any ACU,f 38400 6919520 gin:--gin: nuucp sword: nuucp uucp scuzzy!/src/README /your/home
mhoffos@janus.mtroyal.ab.ca (02/28/91)
In article <1991Feb25.234519.6263@janus.mtroyal.ab.ca>, mhoffos@janus.mtroyal.ab.ca writes: > Dumb question time: to do the DMA test on an Adaptec 1542B, do you have to > have a device attached to the controller? The reason I ask is that I just > got the controller, but my drive is still a month or so away, and I am curious > if I can do the DMA test anyways. > > Unless someone can tell me if it will work already: I have a Cheetah gold i486 > at 25 MHz. > > Thanks in advance, > > Mike Hoffos Thanks for all the replies. Yes, you can do it. And yes, it worked on my machine (but only at 5.0 MHz). Weirdly, I got mail saying that you can slow it down to 3.3 MHz through the command sequence (in the DOS debugger) of -o 331 09 -o 331 FF -q It wouldn't work! (I got the same error as I did at the faster speeds: R/W FIFO failed at 02000.) Strange, although I suppose that I can live with it at 5.0 MHz instead of 3.3 :-) Mike Hoffos PS. Any fellow Canadians know of a cheap Canadian supplier of SCSI drives? I really hesitate to use mail order to the states, as I have been burned (for $40US, at least it was a small amount) and I really don't want to take the risk. (Unless, of course, there is a highly recommended place to deal with in the US.) -- mhoffos@janus.mtroyal.ab.ca (Mount Royal College is a community college in Calgary, Alberta) Disclaimer: Mount Royal College doesn't speak for me, and I *certainly* don't speak for it.