> On Jun 2, 2017, at 1:16 AM, Christian Corti via cctalk > <[email protected]> wrote: > > On Thu, 1 Jun 2017, Jay Jaeger wrote: >> On 6/1/2017 12:12 PM, Ethan Dicks wrote: >>> On Thu, Jun 1, 2017 at 7:59 AM, Jay Jaeger via cctalk >>> <[email protected]> wrote: >>>> 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). >>> >> >> 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 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. >
My setup is an 11/70 running BSD 2.11. I “dd” the RL pack to a file on one of the file systems (I have the equivalent of 4 RP06 drives) and then ftp it to where I want it (since the 11/70 is on my network…actually at one point it was on the internet where anybody could log-in). I can also do that with RK05’s and RX02’s. ;-) TTFN - Guy
