Hi Martin, I use the PPR for all kinds of paper tape shennanigans. https://youtu.be/hGr0F9a7x1A
Remove all but the first jumper, and that may help with your issues. I found at one point the jumper settings, but will need to search. -Eric On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk <cctalk@classiccmp.org> wrote: > A nicely made yellow box with a rather poor manual - both lost in > translation and limited in scope. > > Working on setting one to work, but can't get anything out of the serial > port. In drives the punch, and the punched data verifies (based on a QL). > In also drives the printer, although somewhat garbled, perhaps due to BCD > coding or perhaps due to invalid parity (which is configured as no check). > The reader 'reads' tape both in response to X/ON over RS232 and in response > to front panel keys. However, nothing is emitted onto 232. The D25 - D-9 > transition has all the RTS/CTS and DSR/DTR/DCD lines knitted appropriately > and indicating 'correctly' on blinkenlites. Interestingly, on long test > tapes the reader does not fall off the end but stops, repeatably after ~49" > which is remarkably close to 512 octets. Finally, the CNC termination > octets : % (ASCII) and 0x80 (BCD : RS-244) don't seem to impress the reader > - nothing changes. > > Specific queries: > - Are there any magic control codes or handshaking rituals to coax data > out of the reader > - Is the PPR to CNC Controller interface protocol manual available as pdf > - Where can I find drawings for the PPR's electronics, most importantly > the main board (with its 8031) > - Suggestions on how to proceed with setting to work / fault diagnosis > - Has anyone house trained one of these to read PDP-11 absolute binary > tapes, their target market was G code (text) > > Martin >
