No question that one pinout (the crimp version IIRC) was far more common than the other but I have run across it several times, especially with the DA-9 RS-232 cable, so it's not *that* rare and always worth checking first since, like the different DIP plug pinouts, it's not something you'd expect.
On Thu, Mar 13, 2025 at 7:07 PM Brian K. White <[email protected]> wrote: > No he's right. > > It's just that in 35 years of working on countless servers and desktops > from all different manufacturers I did encounter a single motherboard > one time that had a different pinout and needed the specific cable that > came with the board. Everything else in all those machines and buying > the cables separately from various sources not tied to any boards or > even manufacturer have all been interchangeable. > > -- > bkw > > On 3/13/25 18:14, Peter Vollan wrote: > > I don't think you understand. There used to be a peripheral "card" which > > was just a short cable that plugged into the motherboard and led to a DB > > 25 on the back of the PC, then your parallel printer cable would just > > plug into that. The printer connector on the back of the M100 is the > > same as the one on the motherboards, so just get one of those adaptors > > and remove the bracket for mounting on the PC, and you've got your > > adaptor cable. Of course, I do like my Radio Shack original Model T to > > centronics parallel printer cable. > > > > On Thu, 13 Mar 2025 at 12:34, Mike Stein <[email protected] > > <mailto:[email protected]>> wrote: > > > > Careful with those PC internal printer cables; like the DVI issue, > > some are wired pin to pin and some wired for straight crimping. > > > > And wasn't there a simple hack to reroute printer output to the > > RS-232 port? > > > > On Thu, Mar 13, 2025 at 11:14 AM Brian White <[email protected] > > <mailto:[email protected]>> wrote: > > > > I made a thing like that using a ftdi chip that does the > > parallel to usb. > > > > https://github.com/bkw777/LPT_Capture <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] > > <mailto:[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 <http://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 > > > > > > > > > > > > > > > -- > bkw >
