Accessing a printer port

Andrey Repin
Mon Feb 11 03:50:00 GMT 2013

Greetings, Norman Shapiro!

> Here is my problem. There is an old laptop running Windows XP. It has a
> female "printer port", which I understand is also known as a "parallel
> port".


> There is a male 25 pin to female 9 pin adapter that fits the female port.

Nop. This is likely a SERIAL (Also known as "COM") PORT 9<->25 pin adapter.

> The 9 pin end will eventually be connected to a serial device.

You can't connect serial devices to a printer port. Unless you want to damage
either, or both of them.

> I want to send characters to the serial device, from a C program.

> Can I just open("/cygdrive/c/prn", ...)?

First off, why you're trying to open "prn" file from C: drive?

> Can I use tcsetattr on the resulting file descriptor?

Andrey Repin ( 11.02.2013, <07:40>

Sorry for my terrible english...

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