Larry,

Ha!  Proof that some very experienced folks are members of TVARC.  A lot of that equipment is known to me.  My path was a bit different beginning in the '60s as a field engineer supporting vacuum- tube mainframes.  Sort of explains my focus on Collins equipment.  

That's what I love about amateur radio, the tremendous variety of activities and specialties that a person can get involved with.  Whether you like moonbounce, mountain-topping or working on boat anchors, it is all enjoyable and there is room for every interest in this hobby.

73
Cal - WA3CTZ


On Thu, Jan 16, 2025, 1:03 AM Larry Sheridan <larry10782@gmail.com> wrote:

Hi Cal:

I didn't do much of anything with CPM so wouldn't have any of that OS.  Furthest back I did was 1978 using PL/I on
U of Mich mainframe via dialup on a LA36 DecWriter at 300 baud, thought we were really living it up when 1200 came 
along.  Storage in Ann Arbor was on 9-track 10" tapes at 1,650 bits-per-inch, then moved up to 6,250 BPI later.  Had a
tape copy of all my PL/I stuff for many years, that finally got discarded in one of our moves. 

I can set you up with a clean full install of MS-DOS 5.0 off the original 360K 5-1/4" installation floppys if that helps (!).  
Might still have IBM DOS 3.3 and pretty sure I have a copy of latest last updated MS-DOS 6.22 on a 3.5".

Tried Red Hat LINUX awhile back, got it up & running but was stymied when I couldn't find a driver for the internal
modem to get the final packages & updates.  Looking at maybe trying LINUX again on a clean 17" HP laptop that
runs Win10 great but is 1 generation too old to take Win 11 update, need recommendation on best package to use.

I have some other 1/4" streaming backup tape drives & tapes, that piggyback on the floppy controller, but would have 
to search for the drivers to get them up & running.  Same with the 100 & 250 ZIP drives & cartridges although I may
have one of the 250 Zips with USB cable.

Got rid of a lot of stuff 4 years ago leaving WY and still brought too much, HI.

Larry Sheridan  K8XR
307-630-5697

   



 

On Wed, Jan 15, 2025 at 11:02 PM Cal Fuhrman <calfuhrman7@gmail.com> wrote:
Wow, Larry!  You need to open a museum.  Do you have any copies of CPM OS buried among all those other goodies?

😃

On Wed, Jan 15, 2025 at 10:09 PM Larry Sheridan <larry10782@gmail.com> wrote:

Hi Tim:

Pretty sure that I've got a 3.5" floppy, dual-drive data cable and dual-drive power cable here for you, you didn't specify
720K or 1.44M but may have both in a box.

IIRC, also have a couple 5-1/4" floppy drives in 360K & 1.2M sizes with cables, too.

I do have a tower PC available with all 4 floppy drive sizes in it, that can run any 2 floppys at a time, specifically for 
reading old floppy disks to a hard drive for data recovery if anyone has a need for that, an oldie but a goodie keeper.   

I'd have to look but might also still have a copy of the program COCO2PC which will read floppy disks from the 
Radio Shack CoCo Color Computer disk format to the standard PC floppy format.

Larry Sheridan  K8XR
307-630-5697







On Wed, Jan 15, 2025 at 8:52 PM Tim Leonard <tfleonard@pacbell.net> wrote:
Does anyone have a 3.5 inch floppy drive they would like to get rid of?  I am looking for the PC/AT version to use with an old Intel Pentium motherboard.
I also need the floppy disk ribbon cable. 

Tim
AA6DQ
. 
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Cal Fuhrman