RetroPrinter Support

Aha! I have the same behavior (the off-by-one-character output) from a completely different PC sending data over a PCIe Parallel port and with a different Centronics cable.

What's in common are the Raspberry Pi and the Retro-Printer device.

Can you suggest how I could further isolate the problem ...

Excellent! I hadn't noticed that pattern, so a single bit flipped might indeed fit.

I'm preparing to try with a PCIe Parallel port installed in a modernish PC. If this behaves differently, then I infer we'd suspect the USB/Parallel adapter. If it behaves the same, then do we suspect only the ...

The main reason for gibberish in the output is that the bit_depth setting needs to be set to 7 to work with your equipment. This defaults to 8 bits which is required for graphics printing mainly.


I tried 7 bits and the Epson generic 24-pin printer. Now I get text which is right-ish. The raw ...

Aha! That makes perfect sense. I will try that.

Thank you. I had tried the Okidata Microline 320, because that is the printer that many of my intended adopters are using. As far as I know it, they run the ML320 in Epson compatibility mode.

I wil try an LX-series printer and see what happens. I had hoped that the Epson generic 24-pin printer ...

Hi, folks.

I'm using a USB/Parallel port adapter to connect my Pop!_OS laptop to the RetroPrinter v4. After much trial and error, I have managed to send data to the RetroPrinter; however, the latter seems to make no sense of it. :) I have no idea what might be going wrong, so I don't know how to ...

Yes, a USB to parallel port adaptor works.

The issue is choosing a Windows printer driver which will work - we have had mixed results, unless we install a plain text driver and then send raw data from an emulator on the PC.

Many standard Windows drivers are aimed at later printers than the ones ...

I dove in and purchased both, so I'll merely experiment. It's good to know that these experiments are not obviously doomed to instant failure.

I hadn't seriously considered that, but it wouldn't surprise me. I could understand that leading to spurious error messages that one ought perhaps not to take too literally.

Hi, folks. I am having trouble finding a PC with a genuine parallel port with which to test my RetroPrinter device. I have found a USB to IEEE1284/CN36 adapter. Does anyone have experience with connecting this USB-to-Centroics adapter to the RetroPrinter in order to use a modern computer as a test ...