Tandon TM 100 5 1/4" drives

From: Doug Coward <mranalog_at_home.com>
Date: Tue Oct 19 11:25:19 1999

> ------------------------------
>
> Date: Mon, 18 Oct 1999 14:41:47 -0400
"Bill Sudbrink" <bill_at_chipware.com> said:
> I've hunted around on the web to no avail...
> Can anybody give me the specs on these?

According to my Tandon OEM Operating and Service Manual
for the TM100-1 and TM100-2:

Tracks per inch 48 TPI both drives
Tracks per drive TM100-1 40 tracks, TM100-2 80 tracks
Disk Rotational Speed 300 RPM +/- 1.5%
Motor Start Time 250 milliseconds
Motor Stop Time 150 milliseconds
Seek Time,track to track 5 milliseconds
Head Settling Time 15 milliseconds
Ave Track Access Time 75 milliseconds
Typ. Recording Modes FM,MFM,MMFM
Data Transfer Rate 250,000 bits per second
Unformated Cap. TM100-1 250Kb per disk, TM100-2 500Kb per disk

Bill,
 Let me know if you need a copy of this. Thanks again for the C4P boot
disks. The C4P-MF is coming along nicely. The power supply checks out
and I'm pulling every socketed chip and reseating it during the
cleaning.
So far, I've found 5 chips with pins broken down inside the sockets.
Fortunately, I was able to remove the pins from the sockets.
Now I just need to pick-up some replacement 8T26 bus driver/receivers
and then check all of those 2114s on the two 527 Ram boards and I'll
be ready to fire this thing up. :)
--Doug
====================================================
Doug Coward dcoward_at_pressstart.com (work)
Sr. Software Eng. mranalog_at_home.com (home)
Press Start Inc. http://www.pressstart.com
Sunnyvale,CA

Curator
Analog Computer Museum and History Center
http://www.best.com/~dcoward/analog
====================================================
Received on Tue Oct 19 1999 - 11:25:19 BST

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