RMS.G.EH%MIT-OZ%mit-mc@sri-unix.UUCP (06/18/83)
From: Edward Huang <RMS.G.EH%MIT-OZ@mit-mc> Hello, When running Heath/Zenith CP/M with the Z37-89 DD controller and Tandon TM-100-4 drives, I often get BDOS SELECT errors. Notice that this Tandon drive was brought from an outside dealer NOT from Heath [Heath jacks up the price on outside things they sell in their stores]. The drive is rated for 3ms seek - those Bdos error SELECT happen during warm boot @ 6ms When I increased the speed to 12 ms step, the errors went away as well as all those soft errors I didnt know about. (see SECERR counter in Heath BIOS listing - they give you # of soft errors and retries) Does any-one know what is wrong?? Is it because I used a non-Heath drive or what? Thank you very much, -Ed RMS.G.EH@MIT-OZ via MIT-MC
RMS.G.EH@mit-oz@sri-unix.UUCP (09/25/83)
From: Edward Huang <RMS.G.EH@mit-oz> Hi,thanks for your message (my msg was long ago!). I'm not sure what I said in there but anyway,i noticed that if i increase the seek speed to 12 ms, the problems go away. Thats fine with me now but will keep power supply in mind ($$$). Thanks again, -Ed -------