2 Jun
2017
2 Jun
'17
1:16 a.m.
On Thu, 1 Jun 2017, Jay Jaeger wrote:
On 6/1/2017 12:12 PM, Ethan Dicks wrote:
[...]
I have a similar setup, a DR11 in a 11/34. It is more or less directly
connected to a bidirectional parallel port on a PC that runs a small
server written with eRTOS (DOS based), for the PDP side I have written a
full RT11 driver, so I can do things like COPY/DEV/FILE and even boot from
an image over the DR11. The transfer rate is about 75 kb/s.
Christian
On Thu, Jun 1, 2017 at 7:59 AM, Jay Jaeger via
cctalk
<cctalk at classiccmp.org> wrote:
It uses a simple 8 but parallel bus-like fully interlocked protocol,
byte by byte. The send side raises a data available bit, the receiver
grabs it, then raises an acknowledge. The sender then drops the
available, and then waits until the receiver drops the acknowledge. I can. I use a DR11 parallel port on an 11/24 to
transfer the files.
Interesting. I'd like to see how you tackled that (I can imagine
wanting a couple of layers of integrity-checking, for one).