I made a thing like that using a ftdi chip that does the parallel to usb. https://github.com/bkw777/LPT_Capture
The device itself has a db25f plug to plug directly into the back of most pcs, but the adapter from that to the 100 turns out to be simple. Just one of those off the shelf generic pc motherboard parallel port cables that go from the motherboard to the case. bkw On Thu, Mar 13, 2025, 9:35 AM George Hunt <[email protected]> wrote: > Although a null modem cable connecting the Model 100 serial port to a PC > can handle some tasks, there are times I need a printer. For instance- > PRINT and SHIFT-PRINT from the panel, LPRINT and variants from a BASIC > program, a .CO that uses any of the printer rom routines such as > assembly listings from ZBGASM.CO with /LP. > > My printer (a DMP105) is probably broken beyond repair and I can't get > ribbons for it anyway. This was my plan B: > > I used a Arduino Nano clone (AliExpress $2-$3), a foot of 26 conductor > IDC ribbon cable, a crimp-on 2x13F and a USB jumper. The 2x13F goes in > the Model 100 printer port. The USB goes to a PC running a terminal > program such as PuTTY. The Nano is in the middle and its sketch > (Arduino-speak for program) handles the handshake and parallel to serial > conversion and yields a 9600b stream that's the serial replica of the > M100 printer parallel output. On the PC the "printer" output and be > viewed, scrolled, saved, and printed. Not quite the same as a dot-impact > printer but quieter and faster and it doesn't need ribbons. > > If anyone wants to give this project a try I can provide a materials > list, a sketch listing, a wiring diagram, and pixs. > > GH 3/12/25 > > > > > > >
