Current source for RX50 media?

Ethan Dicks ethan.dicks at
Fri Jun 24 17:09:00 CDT 2016

On Fri, Jun 24, 2016 at 4:54 PM, Jay West <jwest at> wrote:
> Ethan;
> 1) I replaced a few RD52's with RD53's. I probably have some RD52's laying around if he wants to go that route.

10MB is better than 0MB.  I'll mention it to him.  In the meantime,
I've told him to look for ST-225 (RD31) and ST-251-1 (RD32).  I have a
MicroVAX 2000, so formatting for RQDX3 is no problem.

> 2) It's been too long so I don't remember, but don't you use normal pc floppies (5.25) and PUTR can format them?

Yes, but you need the right type of PC floppy because RX50 are
single-sided and 80 tpi and 10 sectors-per-track (400K on one side).
I'm sure there are FAQs and instructions all over about the process...
I just don't recall off the top of my head which keywords to shop for
that are merely good enough for TRS-80s and C-64s and which will do
for RX50s.  Single Sided Single Density will not cut it, not that uber
cheap floppies abound these days (Elephant?  BASF?  Only if you like
cleaning your heads between each diskette).

> 3) Starting with RT11 is great. Adding TSX+ on top of that is Muy Bueno :)

Back in the day, I mostly used raw RT-11, but I did dabble on a
project or two with TSX+.  Once I have some time to clean up a couple
of boxes, I do plan to dig out the TSX+ stuff and play with it.



More information about the cctech mailing list