7 Apr
2005
7 Apr
'05
2:43 p.m.
From: "Joe R." <rigdonj at cfl.rr.com>
I have the schematic of the cable and adapter board somewhere but I won't
have time to look for them anytime soon. The adapter board has some tricky
wiring on it and IIRC the cable IS NOT straight through. I've had a hell
of a time getting non-Intel disk drives to work in the MDSs. I have quite a
few of the same model drives (with different revision boards) and I haven't
gotten ANY of them to work in a MDS. Yes, I've set all the jumpers. I've
spent at least three days trying various drives but never could get one to
work. My suggestion is to search out an Intel drive in the surplus places.
Intel sold a LOT of these systems and there used to be a lot of them in the
surplus equipment places.
Joe
Hi Joe
When I worked at Intel, ( I recall ) I was told that the
M2FM drives had a few capacitors changed in the input amp section
to increase the high frequency response. You might compare
the components from an Intel drive with the same model
drive ( mostly SA800's I thought ). It might be resistors
but it seems like I recall being told it was capacitors.
You could then post this for people that were bringing up
their MDS800's but didn't know where to find drives.
If I get a chance this weekend, I'll look at the drives
I have to see what changes there might be.
Dwight
7 Apr
7 Apr
3:17 p.m.
At 02:43 PM 4/7/05 -0700, you wrote:
One of the problems is that the "extra" drives I have use completely
different boards from those used in the MDSs, even tough they're both
Shugart 801 drives. They even have a lot of differently marked jumpers so
comparing the two drives is very confusing.
Joe
From: "Joe
R." <rigdonj at cfl.rr.com>
I have the schematic of the cable and adapter board somewhere but I won't
have time to look for them anytime soon. The adapter board has some tricky
wiring on it and IIRC the cable IS NOT straight through. I've had a hell
of a time getting non-Intel disk drives to work in the MDSs. I have quite a
few of the same model drives (with different revision boards) and I haven't
gotten ANY of them to work in a MDS. Yes, I've set all the jumpers. I've
spent at least three days trying various drives but never could get one to
work. My suggestion is to search out an Intel drive in the surplus places.
Intel sold a LOT of these systems and there used to be a lot of them in the
surplus equipment places.
Joe
Hi Joe
When I worked at Intel, ( I recall ) I was told that the
M2FM drives had a few capacitors changed in the input amp section
to increase the high frequency response. You might compare
the components from an Intel drive with the same model
drive ( mostly SA800's I thought ). It might be resistors
but it seems like I recall being told it was capacitors.
You could then post this for people that were bringing up
their MDS800's but didn't know where to find drives.
If I get a chance this weekend, I'll look at the drives
I have to see what changes there might be.
Dwight 
3:43 p.m.
Joe R. wrote:
One of the problems is that the "extra" drives I have use completely
different boards from those used in the MDSs, even tough they're both
Shugart 801 drives. They even have a lot of differently marked jumpers so
comparing the two drives is very confusing.
Joe
Joe,
Are you saying that you have trouble getting some 801's to work in the
MDS? These are drives that you know are otherwise good? Any chance of
some photos of the board of those drives? I _think_ I have gotten
800/801's with three different boards to work. Maybe we can compare
notes on that. Seems to me that all the different boards have similarly
marked jumpers, though. So maybe your drives are different than mine.
Dave
7151
days inactive
7151
days old
2 comments
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