22 Feb
2022
22 Feb
'22
3:42 p.m.
On Tue, Feb 22, 2022 at 4:36 PM js--- via cctalk <cctalk at classiccmp.org>
wrote:
Rod,
Not sure an RX33 (if 1.2MB
equivalent) would write working RX50
800k (double density) disks. Very
different drives.
The RX-33 is the same sort of drive that you had in your PC if you wrote
RX-50s with your PC. Back in the day, lots of people used RX50.SYS to
have it setup the transfer rates, RPM and sectors per track parameters
so that you could read/write them on a PC running DOS. The parameters
are basically the same ones you need to write the 360k DOS floppies, only
with twice the number of tracks and 10 sectors per track instead of 9 (this
is
done by making the track gaps smaller and eeking an extra sector out of the
deal, but using at the same data rates).
I've successfully put an actual RX-50
drive on my PC, and written RX-50 images
using PUTR. You might try that route.
Did you have difficulties with Pin34 not being the change disk pin? That's
what
I ran into when I tried this many many years ago...
Warner
- John Singleton
On 2/22/2022 11:20 AM, Rod Smallwood via
cctalk wrote:
Hi All
I did find some RX50 images of
the MicroRSX distribution.
So I fired up my DEC Celebris FX.
It runs W95 and has a 3.5 inch floppy,
a real RX33 5.25 inch drive and a CD-R.
Its accessible on my network so
getting files onto it is not a problem.
So install putR.com , and transfer
the image files.
Huh! putR says the RX50 disk is
write protected. Its not and the drive
works normally with the disk from the
MS DOS prompt.
So much for putR writes RX50's on
RX33!
Rod