‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, May 7, 2021 6:27 PM, Gene Heskett <ghesk...@shentel.net> wrote:
> On Friday 07 May 2021 18:14:19 fxkl47BF wrote: > > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > On Friday, May 7, 2021 6:45 AM, Gene Heskett ghesk...@shentel.net > > wrote: > > > > On Friday 07 May 2021 07:10:16 fxkl47BF wrote: > > > > > > > a friend gave me a panasonic kx-p1124i. the printer works ok and i > > > > have it connected with a parallel cable. i configured it with cups > > > > to use "Driver: Panasonic KX-P1124 Foomatic/epson (recommended) > > > > (grayscale)". it prints garbage. i downloaded the ppd file > > > > recommended at openprinting.org and still get garbage. suggestions > > > > are appreciated. > > > > > > You may not be able to on hat old a printer unless the driver can be > > > configured to hold the port data valid until the printer acks the > > > strobe signal. > > > That printer has fcc required noise filters in its input socket > > > which restricts the data speed, and if the port doesn't hold the > > > data until the printer acks it, at least 2 microseconds, its going > > > to print garbage. BTDT, gave up and used the slower serial port the > > > printer also had. You need a 1284 rated cable, and a printer port > > > that can do EPP mode, not always supported by mobo hardware. > > > I could be wrong, but it sure smells like this. > > > > i checked the port and it is set to epp > > excuse me if i ramble a bit > > i create a file with one word 'hello' followed by a newline and a > > carriage return the content of the file in hex is 68 65 6C 6C 6F 0A 0C > > if i print the file with cat file > /dev/lp0 i get "helloJL" > > capital J is 0x0a plus 0x40, capital L is 0x0c plus 0x40 > > 0x0a and 0x0c are control characters > > where and why are they being converted to printable characters > > That is usefull, as it says the port is duff, with bit d6 stuck high. Or > possibly that the cable is duff, can you "ring" it with an ohmeter? > > d0 set would be a 0x01, d1 would be a 0x02, and d2 would be an 0x04, d3 > would be an 0x08, d4=0x10, d5=0x20 and d6=0x40. Possibly blown by being > plugged in live at some time back in the mists of time. If the machines > card bus has an empty slot, you might try a different port card. A $20 > bill should get one of those. > > There could be some old mostech chips that don't support epp though, so > make sure the web page propaganda says it does support epp. > > Thats a 24 pin head "pin pounder" printer, and I'd be surprised if all > the pins work, they were small and fragile 2 decades ago. It, and the 24 > pin oki's were about the best of the lot back then. Nowadays, the > parport is fading away, and thats making it hard to build a cnc machine > controller on the cheap using a parport breakout board for the machine > control. i tried a motherboard with a builtin parallel port a startech card, a rosewill card, and a parallel to usb adapter the results was all the same the answer is probably right in front of me and i'm to thick to see it :)
