OpenEuphoria

Re: parrallel port null modem

• Posted by Mathew Hounsell <mfh03 at UOW.EDU.AU> May 13, 2000
• 552 views

> has anyone created a routine to transfer data on the printer port?
> windows d.c.c. only recognizes the serial ports on the old computer.
> so i was thinking of a simple one way transfer out to the printer port and
> a simple reading of the printer port on the newer computer.

While developing my printer library, I tested it by ...

fn = open( "prn", "wb" )
if fn = -1 then
        puts(1, "Could not open printer port.\n" )
else
        -- Transmit
end if

This works under DOS and so under windows.
Under Linux you should probablely use \\dev\lp0

For file transfer this is OK, however you may wish to use a robust protocol to
ensure your
data isn't corrupted.

-------------------------
Sincerely,
Mathew Hounsell

mat.hounsell at excite.com