[XCSSA] Parallel Port Hell

xcssa@xcssa.org xcssa@xcssa.org
Sat, 12 May 2007 18:18:04 -0500


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Yes, i still exist.. :P

I have a hardware question that I'm sure that will perplex you parallel port
prodigies and some other nonsense.. :P

I'm working with an HP JetDirect printserver (external) with a 25 pin
parallel port cable.  The project is to connect an LCD to it


there are several lines that if I connect together, the printserver says it
is online.   Namely Select, AutoLF, Error/Fault.  I know that Select is from
printer to let the computer (printserver) know that the printer is in ready
state(tied high) and that Error/Fault to let the computer know that the
printer is in a non-fault state (tied high to indicate OK.) I think the
Auto/LF is high from the computer/printserver to let the printer know that
it is not to wait for a manual CR/LF before printing the next line.  Do
either of those lines go low while the printer prints to serve as any kind
of ACK?

I have a bunch of LEDs conencted to the D0-D7 pins, and STROBE and when I do
the test page print by pressing the button on the front of the printserver,
I get a single blink and a data bit on the LEDs.  Using HP's WebJetadmin, I
see that the printer is stalled, and that I have to reset the printserver to
restore it to the online state.

Any suggestions?


Thanks in advance!

FIRESTORM_v1

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Yes, i still exist.. :P<br><br>I have a hardware question that I&#39;m sure that will perplex you parallel port prodigies and some other nonsense.. :P<br><br>I&#39;m working with an HP JetDirect printserver (external) with a 25 pin parallel port cable.&nbsp; The project is to connect an LCD to it 
<br><br><br>there are several lines that if I connect together, the printserver says it is online.&nbsp;&nbsp; Namely Select, AutoLF, Error/Fault.&nbsp; I know that Select is from printer to let the computer (printserver) know that the printer is in ready state(tied high) and that Error/Fault to let the computer know that the printer is in a non-fault state (tied high to indicate OK.) I think the Auto/LF is high from the computer/printserver to let the printer know that it is not to wait for a manual CR/LF before printing the next line.&nbsp; Do either of those lines go low while the printer prints to serve as any kind of ACK?
<br><br>I have a bunch of LEDs conencted to the D0-D7 pins, and STROBE and when I do the test page print by pressing the button on the front of the printserver, I get a single blink and a data bit on the LEDs.&nbsp; Using HP&#39;s WebJetadmin, I see that the printer is stalled, and that I have to reset the printserver to restore it to the online state.
<br><br>Any suggestions?<br><br><br>Thanks in advance!<br><br>FIRESTORM_v1<br>

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