knudsen@ihnss.UUCP (01/25/84)
By now it's clear that you can't vary the step rates of /d0 and /d1 independently, since CCDISK doesn't look at the device descriptors. I have a RS /d0 and a Tandon /d1; the latter is rated at 8 (not 6) msec. Experiments show that the RS drive will almost hack 20 ms (the next faster rate after 30). So far the only published CCDSIK patches (on netnews or The Rainbow) are for 6 ms. I know about the bytes that end in 3, but what value should I put in that delay loop constant at locs 204 and 205 hex? Someone posted that even RS disks could hack 6 ms. Wish he could have heard one actually trying it. Also hope he adopts policy of not posting hearsay, wishful thinking, etc. The RS drive sounds very smooth at 20 ms, but gets occasional sector errors. I'm hoping that fixing that delay constant to something less drastic will clean things up. mike k