RL02 to PC image

systems_glitch systems.glitch at gmail.com
Fri Dec 15 12:49:14 CST 2017

It's on my list of things to do -- you can run external clock into DL11 and
DLV11-J style connectors, and IM6402 UARTs are supposed to go up to 2 mbit,
so somewhere between 38400 and 2 mbit should be possible. I believe it'll
require external RS-232 transceivers due to the design of the ones used on
various DEC boards. As you say, whether or not the bus/CPU can keep up is
another matter! Figure if I can get any real improvement out of it, I'll
lay out a board and provide high-speed kits.

Anyone know of a 40-pin UART with a FIFO? :)


On Fri, Dec 15, 2017 at 1:34 PM, 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

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