LPT pinouts

Jamie Tolbert jtolbert@sprite.gremlan.org
Mon, 6 Nov 1995 13:55:40 -0500 (EST)


Why is the escape bit for the dvk on a different port? some of this is 
new to me but is this why my w9xt card doesnt work with 9.26 even though 
my lpt port is not bi-directional?? works fine with 9.22 but escape does 
not stop transmission . i to would prefer that dvk keying be on lpt2 so 
that lpt1 be reserved for other conventional uses . cw keying on lpt2 in 
9.22 works fine but not on 9.26 . how would one use a voice keyer with 
the pinouts on 2 different ports?? simply hard wire one pin from lpt2 to 
the proper place on the dvk??or is ther more to it that that ??
73  Jamie WW3S  jtolbert@gremlan.org

On Mon, 6 Nov 1995, Jim Hollenback wrote:

> On Nov 4, 10:59am, Ken Wolff wrote:
> > Subject: LPT pinouts
> >
> >
> >
> > [ text/plain ] :
> >
> >
> >             Proposed pin assignments for V9.27
> >
> >
> > -----------------------  LPT1
> >
> > CW Keying:              1
> > CW Pullup:              17
> >
> > DVK F1-F4:              3, 4, 5, 6
> >
> > -----------------------  LPT2
> >
> > CW PTT:                 1                 to avoid relay chatter
> >
> > Escape bit for DVK:     17                pulsed low to halt DVK
> >
> 
> Ken,
> 
> Thanks for the opportunity to comment on 9.27. I look forward to it
> so I can use both my OMNI and DVK ... and that is why I am writting.
> Unless I'm reading it wrong, it seems that the to fully use the DVK,
> it requires two LPT ports. This is kinda' hard with a W9XT card. How
> about putting the Escape bit on the same port as the F1-F4 bits? Would
> also be best for an outboard DVK. It also means keeping the CW keying
> on the same port. I my personal situation the CW PTT is not needed, so
> it being on LPT2 is not a problem. Not sure where the escape bit is now
> for the W9XT card since I just got one. It may mean a new ADDRGAL to
> handle that, but we probably get Gary to do that. What say other
> W9XT users?
> 
> Of course for my personal situation, I would prefer the DVK F keys and
> CW keying to go to LPT2 so I don't have to change all my normal applications
> to use LPT2. (the W9XT card is LPT2 now).
> 
> 73, Jim, WA6SDM
> jholly@cup.hp.com
> 
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