[vcf-midatlantic] SASI Hard Drive Controllers

william degnan billdegnan at gmail.com
Sat Dec 17 10:06:04 EST 2016


Related to my post yesterday, I have a SASI XEBEC 104526 rev 4 that works
ok when there is a fan blowing on it but overheats after a while.  It
controls a SASI external hard drive used by a Visual 1050 computer.  OK, I
will look through the electronics and replace failing components and sure
it up.  Seems like the typical course of action for an XEBEC and other
(SASI) external controllers.  I am also thinking about the CBM 9090 and
related 5-10Mb drives. 35 years in, they all seem to be failed or failing.
Similar XEBEC controllers for things like IBM PC's seem to have fared
better.  Why?  Or just a coincidence?  Is there a common component that
fails more often in SASI controllers but not IDE and others of the era?

I know the history of SASI/SCSI and I have some XEBEC docs.    I can
research further on my own, but maybe someone who actually supported these
back when they were new has some casual knowledge to pass along.  How
reliable were these when they were new/current?

Bill



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