joep@tnosoes.izf.tno.nl (Joep Mathijssen) (11/01/90)
Looking for a program that lets me READ the parallel-port (PRN:) on a MS-DOS machine. For example when I connect 2 computer via this port, how can I make them talk? Joep, =============================================================================== Joep Mathijssen TNO Institute for Perception Phone : +31 34 63 562 11 P.O. Box 23 Fax : +31 34 63 539 77 3769 ZG Soesterberg E-mail: uunet!hp4nl.nluug.nl!tnosoes!joep The Netherlands or: joep@izf.tno.nl ===============================================================================
js@dukee.egr.duke.edu (Jeffrey A. Shorey) (11/01/90)
From article <1393@tnosoes.izf.tno.nl>, by joep@tnosoes.izf.tno.nl (Joep Mathijssen):
> Looking for a program that lets me READ the parallel-port (PRN:) on a
^^^^
If you look in the schematics for any parallel you will find it is a one way
set of registers. the only line that comes in is some sort of acknowledge
line.
Therefore you have two choices: make you own bidirectional parallel port
(5 or 6 chips, with buffers and 8-bit gates) or use the serial port. If you
really want to build one, I've done it and have the schematics running around
someplace...
- Jeff Shoreywb8foz@mthvax.cs.miami.edu (David Lesher) (11/02/90)
Others said: >> Looking for a program that lets me READ the parallel-port (PRN:) on a > ^^^^ >If you look in the schematics for any parallel you will find it is a one way >set of registers. the only line that comes in is some sort of acknowledge >line. Sigh.. I think this topic belongs in the in the MFAQ list. The genuine I-BEAM parallel port on the XT lacked one jumper from, as I recall, the command decoder to the bus latches. This seemed to smell of a last minute marketing decision to disable it. It's easy to add. I did, but so long ago I cannot recall details. Most clone boards are bidirectional. -- A host is a host from coast to coast.....wb8foz@mthvax.cs.miami.edu & no one will talk to a host that's close............(305) 255-RTFM Unless the host (that isn't close)......................pob 570-335 is busy, hung or dead....................................33257-0335
silver@xrtll.uucp (Hi Ho Silver) (11/05/90)
In article <1150@cameron.egr.duke.edu> js@dukee.egr.duke.edu (Jeffrey A. Shorey) writes:
$From article <1393@tnosoes.izf.tno.nl>, by joep@tnosoes.izf.tno.nl (Joep Mathijssen):
$> Looking for a program that lets me READ the parallel-port (PRN:) on a
$ ^^^^
$If you look in the schematics for any parallel you will find it is a one way
$set of registers. the only line that comes in is some sort of acknowledge
$line.
Not for _any_ parallel port. Many of them are in fact designed to be
bidirectional. The problem is, if you take one that isn't, you can end
up blowing it in your efforts to pump data into the computer through it.
--
HI ROGER |Nikebo says "Nikebo knows how to post. Just do it."| silver@xrtll
_________|-----------------------|_______________|------------|_____________
yunexus!xrtll!silver (L, not 1) | Hi Ho Silver | costing the net thousands
Silver: Ever Searching for SNTF |i need a grilf | upon thousands of dollarscur022@zodiac.ukc.ac.uk (Bob Eager) (11/05/90)
In article <1393@tnosoes.izf.tno.nl>, joep@tnosoes.izf.tno.nl (Joep Mathijssen) writes: > Looking for a program that lets me READ the parallel-port (PRN:) on a > MS-DOS machine. For example when I connect 2 computer via this port, > how can I make them talk? There was an article about this in a recent copy of Microsoft Systems Journal. ---------------------+----------------------------------------------------- Bob Eager | University of Kent at Canterbury rde@ukc.ac.uk | +44 227 764000 ext 7589 ---------------------+----------------------------------------------------- *** NB *** Do NOT use the return path in the article header *************** ---------------------------------------------------------------------------
davem@nro.cs.athabascau.ca (11/09/90)
joep@tnosoes.izf.tno.nl (Joep Mathijssen) writes: > Looking for a program that lets me READ the parallel-port (PRN:) on a > MS-DOS machine. For example when I connect 2 computer via this port, > how can I make them talk? > > Joep, > A company called GetC Software in Vancouver, B.C. markets a product called File Shuttle which permits high-speed transfers between PCs using parallel ports. The program runs on each machine and a hardware device they call a "rocket socket" and a standard parallel cable are all that's needed. It sells for about $100 Cdn. The company's address is GetC Software Inc. 1280 Seymour Street Vancouver, B.C. Canada V6B 3N9 Their phone number is +1 604 684-3230 Dave McCrady | ersys!davem@nro.cs.athabascau.ca Edmonton Remote Systems | 13324-138 Street | BBS: (403)-454-6093 300-9600 bps (HST) Edmonton, AB Canada T5L 2B4 | USENET (403) 452-3254 300-2400 bps
ygrignon@sobeco.com (y.grignon) (11/16/90)
>From article <1393@tnosoes.izf.tno.nl>, by joep@tnosoes.izf.tno.nl (Joep Mathijssen): > Looking for a program that lets me READ the parallel-port (PRN:) on a > ^^^^ >If you look in the schematics for any parallel you will find it is a one way >set of registers. the only line that comes in is some sort of acknowledge >line. FYI on PS2's the parallel port can be made an input port by playing with the bits at memory location 0x35 (if my memory serves me right). On older PC's where the parallel port is made of separate IC's, it is possible to convert an output only port to input/output by rerouting only one trace. Such a modification appeared in Circuit Cellar Ink (approx 1 yr ago). Yves