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HI Mike Dual sided dual drives jumper configurable, Motor control was planned but i mixed up my files and made the wrong one , i have a little daughter board that plugs into the open socket no cut's and 4 jumpers top or bottom. but for the amount of time these systems would be running i don't think ...

I am am interested in the OSI hard disks and would like to gather any info i can on the boards and drives

590,592,594,596,598 i have schematics for the 590,592,594 and hoping someone has info on the 596 and 598 plus any doc or reference material.

Thanks

It seems to be a bit quit around here, so i thought i would post a couple things i have been up to.. 555 replica- 2 printer ports 4 serial ports 1 network node and 8k ram D000 and E000 . 555a.jpg 470K hot rodded 470 with up to 64k ram or rom ,Data separator and ide sockets. These will be going in my...

Making the connection give the desired results, if your using hexdos for RTC you need the 1 sec pulse .

Just wondering if anyone one with a real 610 has this connection in copper, its not on my original 610, but it looks to be a later production run as it has solder mask on the back

Hi Sounds like you have it going, you need to load the track you want to write in memory say $4000 then use save command ie SAVE 01,1=4000/8 where SAVE TT,S=XXXX/P TT=track # S=sector # XXXX= where data is P= pages to write do track zero last you can call it from track 13 CA 0200=13,1 GO 0200 I thin...

Can some one check there 610 board if there is a connection between pin 9 of U10 and pin 1 of U11,
my 610 is missing the trace so the replica is also missing this trace.
Thanks

Ok, After what seemed like forever I have Successfully reconstructed the OS65U disk all 74 tracks of it.
Seems to be all working, I made a copy of it with itself to be safe (took about the same time as building 1 track )

Bad track 7 H/D/M?D -------------------------------------------------------------------------- : OS-65U V1.44 2/83 - CD-74 - 1 Mhz - Dev A ! Single User : : M/A-COM Office Systems Inc. Business BASIC ! : : Copyright 1981, 1982 - All Rights Reserved ! : -----------------------------------------------...

Ok using the above info I can get a ok prompt and basic is working , so that means im on the right path as far as I can tell from examining the memory track 7,8,9 are correct I will do a dump of them to check for a bad byte or? I did rewrite them still no luck I would assume track 1 through 6 should...

Hi and welcome

I have had success building disks this way http://osiweb.org/osiweb/osiforum/viewt ... ?f=4&t=178
but is a slow process

Good luck and don't hesitate to ask any questions

Grant