karl@ddsw1.MCS.COM (Karl Denninger) (12/12/89)
Hello everyone! I have a quick question. Since I can't reach Adaptex (Roy Neese's machine) anymore for anonymous login, I will ask here in the hopes that someone has an answer. We wish to use a 1542 with a high speed CPU. Specifically, a Cached 25Mhz 80386 machine. What problems, if any, am I likely to run into doing this? I know the 1542 is a third-party DMA board, which implies that it will do it's own thing with the bus. Will this get me in trouble with the cache? Is this possible, and if so, what should I watch out for? Secondly, does anyone have the programs that were on adaptex to diddle the "mode pages"? I specifically want to get the read-ahead turned on for either a CDC or Maxtor fixed disk. Replies appreciated; users who actually have this combination working even more appreciated. If you DO have this combination working please indicate the configuration you are using (motherboard, etc). Thanks! -- Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl) Public Access Data Line: [+1 708 566-8911], Voice: [+1 708 566-8910] Macro Computer Solutions, Inc. "Quality Solutions at a Fair Price"
caf@omen.UUCP (Chuck Forsberg) (12/13/89)
I am running a 1542A on a 33 mHz Micronics motherboard, SCO Unix, CDC Wren V. With the Wren's track buffer turned on, I get slightly better than 500 kbytes/sec on large file reads (cp bigfile /dev/null). Three problems so far: 1. Orchid Pro Designer Plus SVGA and 1542A will not coexist. I've tried several different BIOS addresses on the 1542A and both 8 and 16 bit modes on the Orchid to no avail. The Orchid also bollixes the tape controller, so I don't know who's at fault here. 2. The Adaptec program to turn on the track buffer wouldn't run on a 1540 unless the computer was slowed to 6 mHz. I haven't tried the prog with the 1542A. 3. In switching from the 1540 to 1542, the old DOS partition was readable by both but the Xenix partitions were not. Why??? Obviously none of these were serious problems (it was about time to change to the Acer Fast File System anyway). With the current SCO Unix, I have not lost any files (that I know of) despite numberous power dips, etc. "Your mileage may vary."