[comp.sys.att] 3B2 Floppy Drive Substitute

Robb.Thomas@f1.n684.z89.onebdos.UUCP (Robb Thomas) (10/30/90)

   I appear to have found a 3B2/400 floppy disk drive substitute, which
means that for me, my 3B2 floppy troubles are now over!   I 'think'
I have just successfully 'hacked' an ordinary 1.2 Meg PC floppy disk drive
to work with my 3B2/400 computer.

   So far, I have just formatted/verified/created file systems, mounted them,
as well as mount disks formatted under the 3B2's old original floppy disk
drive.

   This also implies that it might be possible to interface a 720K 3.25"
floppy disk to the system as well...?  Hmmm, I wonder if I can 'hack'
2 floppies onto this box?  <GRIN>  Any Suggestions???

    I will run like this for the next few weeks, and verify that this sucker
is in fact working perfectly.  If anyone has managed to get two floppies 
drives interfaced, I would really be interested in heaaring about it!  If
it is possible, I can see myself interfacing a 720K 3.25" drive as a second
disk drive.

     The 'exact' drive I am using is a Panasonic JU-475-2AGJ drive, and all
did was move the DC jumper to RDY, and moved the CX jumper over to BX.  The
drive must setup to use Drive Select 0, and the terminating resistor MUST be 
installed.  If you are not that great in the 'hardware' department, then I
suggest you do not try this....

Cheers......

                                                ---- Robb ----
                                              oneb!hakatac!rthomas

--- FD 1.99c
 * Origin: Sir Hackalot's Lair (89:684/1)
--  
        Robb Thomas - via IMEx node 89:681/1
        Robb.Thomas@f1.n684.z89.onebdos.UUCP

cyrill@scicom.AlphaCDC.COM (Cyro Lord) (12/09/90)

-   I appear to have found a 3B2/400 floppy disk drive substitute, which
-means that for me, my 3B2 floppy troubles are now over!   I 'think'
-I have just successfully 'hacked' an ordinary 1.2 Meg PC floppy disk drive
-to work with my 3B2/400 computer.
- ...deleted for space......
-    The 'exact' drive I am> using is a Panasonic JU-475-2AGJ drive, and all
-id was move the DC jumper >to RDY, and moved the CX jumper over to BX.  The
-rive must setup to use Dri>ve Select 0, and the terminating resistor MUST be 
-nstalled.  If you are not >that great in the 'hardware' department, then I
-uggest you do not try this>....
-                                              oneb!hakatac!rthomas

Well, I was not able to find a Panasonic JU-475-2AGJ in town but did find
a JU-475-4AEG and it worked. I had to change AX junper to MX and MS to EX
and everything is working find. This beast is a 1.6 meg drive and what it's
used for I don't know. I do believe the drive AT&T uses for 3b2 series is
a Panasonic (at least this is what I have been told by a AT&T dealer). Now
if I could just find out how to add a second drive without getting the full
kit from a VAR dealer, I would be happy, at least for about 5 minutes.
-Cyro
-- 

Cyro Lord	Alpha Comm. Dev. Corp. -  DOMAIN  cyrill@scicom.alphacdc.com
UUCP		{ncar,nbires,boulder,isis}!scicom!cyrill
Endeavor to Persevere - Chief Dan George