At 11:45 AM 9/7/04 -0700, Dwight wrote:
>>From: "Joe R." <rigdonj_at_cfl.rr.com>
>>
>---snip---
>>>>
>>>> Intel sold a disk-drive subsystem that consisted of two Shugart 801 8"
>>floppy
>>>> drives. They could work as single density or double density depending on
>>>> whether you had the 201 or 202 controller board set. Yes, it was a set
>>of TWO
>>>> multibus board to control those two floppy drives.
>>>>
>---snip---
>>
>>
>> Here are some pictures of a couple of my 800s
>><http://www.classiccmp.org/hp/mds800_3/> and
>><http://www.classiccmp.org/hp/mds800_4/>. Here
>><http://www.classiccmp.org/hp/mds.htm> is a webpage that I started (but
>>never finished) that describes some of the 2xx models. Here is a MOL
>>finished webpage about one of my other MDS-800s,
>><http://www.classiccmp.org/hp/mds-800/mds-800.htm>. It includes pictures
>>and descriptions of most of the various MDS-800 cards.
>>
>> Here, <http://www.classiccmp.org/hp/multibus/multibus.html> is a webpage
>>that I swtarted about Multibus cards. It includes both Intel and non_intel
>>cards. I'm WAY behind with the updates for it.
>>
>> Joe
>>
>
>Hi
> When I worked at Intel, I was responsible for the test of the
>1036 Floppy Disk Control Card ( this was for double density
>M2FM ). It seemed that I was one of the few people, even then,
>that knew what a phase locked loop was and how it needed to
>be tested.
> The Channel card used the 3000 series bit slice.
The channel cards are getting hard to find. The chip collectors are
gutting them for the bit-slice chips.
These were
>a reasonable bit slice but didn't compete well with AMD's
>2900 stuff. I suspect it was mostly the sequencer that put
>people off. It is almost impossible to read the code for these
>and takes a grand master to write the code effectively.
> I've got to get started on my MDS800. It just seems like other
>projects get in the way. Perhaps I should put it in the walkway.
>that way I'll be reminded of it each time I step over it.
> As for a terminal, other than the possible current loop issue,
>you may need the right emulator if you want to run CREDIT
>( their screen editor ). I believe this just used VT100 codes
>but I could be wrong. The original 800's used Beehive terminals
>that were painted Intel blue.
I have one but it doesn't work. Anyone got a service manual for it?
Joe
>Dwight
>
>
>
Received on Tue Sep 07 2004 - 16:48:42 BST