RL02 to PC image

systems_glitch systems.glitch at gmail.com
Fri Dec 15 12:51:00 CST 2017

This would be the Right Way. I've got my PDP-11/73 set up for that, I still
need to build the kernel driver for the Ethernet interface and get TCP/IP
going. I have dozens of RX02 floppies to work through, much faster than
serial, and the vtserver `rx` driver has a bug in it anyway where it
continues reading past the end of the media (not harmful to the disk/drive,
but you have to sit there and watch it).


On Fri, Dec 15, 2017 at 1:40 PM, Glen Slick via cctalk <
cctalk at classiccmp.org> wrote:

> On Fri, Dec 15, 2017 at 10:34 AM, Ethan Dicks via cctalk
> <cctalk at classiccmp.org> wrote:
> > On Fri, Dec 15, 2017 at 9:38 AM, systems_glitch
> > <systems.glitch at gmail.com> wrote:
> >> vtserver does indeed work for transferring RL02 contents to a binary
> image,
> >> suitable for use with SIMH or E11 or whatever.
> >
> > Yep.  I backed up the RD52 in a new-to-me MicroPDP-11 and it took hours.
> >
> >> Be advised, it takes a *long*
> >> time, even on a 11/73 with the serial port turned up to 38400 bps.
> >
> > Has anyone done any console serial port hacking for speed on Qbus or
> > Unibus?  On something integrated like a KDF11-B it might not be so
> > easy, but maybe a DLV11J or a DL11W?
> >
> > I'd think hitting 115200 would be really sweet, if everything can keep
> > up.  Totally worth some experimentation to see what part gives out at
> > ludicrous speed.
> >
> > -ethan
> My method of creating images of several RL02 disks was to set up a
> PDP-11 system running 2.11BSD with an RL02 controller and Ethernet
> interface, then 'dd' the disks to image files on the local system and
> then FTP the image files out to a modern system. Still seemed slow,
> but not as slow as a serial port connection.

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