pete@titan.titan.rice.edu (Pete Keleher) (12/19/88)
Before you all say it, I'll say it. I SHOULD GET A NEW MACHINE. That out of the way, I'll just say in my defense that I AIN'T GOT THE BUCKS!!! My problem is that every so often, my mac gets hung. By using TMON, I can see that it seems to be looping in some code labeled scsi_dispatch. The reason that I am having this problem is probably because I am running system 6.0 on an ORIGINAL mac. The ~1984 mac does has been upgraded with the 128k roms, and I installed Dove 548s 2meg memory/scsi upgrade. Is there really a differance between the mother board of the Mac Plus and the origninal that could be causing this problem, or do I just have bad hardware? Failing an answer for that, has anyone else noted a similar problem? I am using a CMS MACSTACK 20 disk. pete pete@titan.rice.edu
jcl@hpausla.HP.COM (Jeff Laing) (12/21/88)
Pete Keleher (pete@titan.titan.rice.edu) writes in comp.sys.mac: > My problem is that every so often, my mac gets hung. By using TMON, > I can see that it seems to be looping in some code labeled scsi_dispatch. Now that you mention it, yeh. I do have the same problem 'from time to time' Loops in the same place every time (waiting for a bit to get set in scsi_disp) Running disk tests claim that the disk media is ok > The reason that I am having this problem is probably because I am > running system 6.0 on an ORIGINAL mac. The ~1984 mac does has been I'm not. I'm still on 4.3 (I don't trust these fancy new systems yet) on a Mac+ with 2.5 meg. > have bad hardware? Failing an answer for that, has anyone else noted a > similar problem? I had put it down to the fact that I am running a no-name drive (constructed by one of the local computer store hardware hackers, probably from a Seagate) I have already had to make one change to the driver he wrote (he managed to have a word being accessed at an odd address). My guess was that the drive does not really support blind read/writes properly, and its getting behind just long enough to hang... Anyone got any ideas?
ts@cup.portal.com (Tim W Smith) (12/23/88)
Have you tried calling Dove and asking if there are comparibility problems with that hard drive? They had to do some interesting things to get a SCSI port on the old Mac, and some software that manipulates the SCSI chip directly rather than going through the SCSI Manager can have problems. Tim Smith