Re: ot: kx-p1124i configuration
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, May 7, 2021 6:27 PM, Gene Heskett <gheskett@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 gheskett@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 :)
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