Hi all,
after searching the archives for info on osi and m/a
comm computers, i found this list and subbed to it.
i am into mini computers and ham radio as well as most
tech fields.
currently i'm looking for info and pinouts/schems on
the osi boards.
i have some spare boards form a osi m/a-comm 220c
and a oem of the same but am trying to get a "dbi
db80"
working.
the db-80 uses all osi drives,powersupplies and
boards,
except for the two cpu/terminal/comms boards labeled
"dbi inc db1"
the comp also has a ohio memory systems 10" hard drive
in it.
the machine did work in the early 90's then a strange
problem started" upon a floppy command the head would
go to the end of the lead screw and the stepper would
not stop!
now after 6 years in storage i tried the spare boards
on a backplane and nothing (great more work to do).
i thought the drive might be bad also so i searched
the archives on this list and read about the
serial/parallel interface that osi used - a-ha! that
why osi dosnt use the read data pin on the siemans
drive.
the drive did head load and step ok when i tested them
last week and i got a good index sensor pulse so
perhaps the controller was going.
if needed i'll recap and replace all the chips on the
cards (i hope the eproms (rom) are ok.
might anyone have docs on the osi boards?
or is thier any osi owners.collectors on the list
anymore?
if so i'll send the board numbers later.
73 DE N8UHN
Bill
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Received on Wed Nov 20 2002 - 12:22:46 GMT