On Sep 21, 2015, at 12:28 PM, Jay Jaeger <cube1 at
charter.net> wrote:
On 9/21/2015 4:30 AM, Johnny Billquist wrote:
On 2015-09-21 02:11, Jerome H. Fine wrote:
Chuck
Guzis wrote:
Note that the RX50 was the same. DEC finally changed
their marketing policy with the RX33 drive which used the
same 3.5" HD floppy media as the PC. It was actually
possible to FORMAT those floppies under RT-11.
No, DEC actually did support users formatting RX50 floppies on their
own, but only on the Rainbow.
Johnny
There was also a standalone PDP-11 diagnostic program available that
could do it.
For RX50? On standard PDP11s, those used an MSCP controller, which means the controller
would have to do it. Did it? The only MSCP controller I remember that did formatting was
the UDA50.
I suppose you could on a Pro, since that had its own particularly disgusting junk
controller. But I haven't seen RX50 formatting there. My impression was that they
came factory formatted, with the DEC-specific 10 sector per track format.
paul