14 Sep
2009
14 Sep
'09
10:51 a.m.
Check the 9885 manual for HP's format description,
and the DD MDS
controller description under Intel.
As an aside, does anyone happen to have any information on the host
interface to the 9885 disk unit?
OK, it's a 16 bit parallel data bus (commands sent there too) with some
control lines -- it was designed to link to a 98032 interface and the
spec of that is well-known.
But does anyone have any ideas as to the command set, etc. I think you
can deduce a little from the published source code in one of the
HP9000/200 Pascal technical manuals (on Bitsavers), but I'd rather not
battle through almost uncommented 68K assembler if I don't have to :-)
-tony