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Don't see voltage indication on parallel port

Posted: Thu Apr 09, 2009 5:31 pm
by asapir
Hi,

I'm working with windows vista (32) and I have installed inpout32.dll. I'm using the InOut32.Net example and try to check the voltage (with volt meter) on D0,D1 pins. for some reason I'm not getting any indication on D0 D1 pins. I installed parmon that should monitor the parallel port and this program shows the correct indication, I also change the BIOS information on LTP port from ECP to SPP, but still I didn't see any voltage changes on the D0 ports.

thanks,
Asi.

Re: Don't see voltage indication on parallel port

Posted: Fri Apr 10, 2009 12:36 am
by phil
Have you tried asking the author of InpOut32?

I only ported it to 64bit and I claim no real knowledge of a) how it works b) how the parallel port works.
The last time I did any real programming using the parallel port was 12 years ago - back in the days of MS-DOS and turbo pascal lol.

Having said that, if you are the person that emailed me (sorry I have not replied yet but I have been away on buisness) and you are using version 1.0.0.1, then have you tried using version 1.2.0.0 on my download page?

Thanks,
Phil

Re: Don't see voltage indication on parallel port

Posted: Fri Apr 10, 2009 7:28 am
by asapir
Yes, I'm using you latest version

Re: Don't see voltage indication on parallel port

Posted: Fri Apr 10, 2009 1:52 pm
by phil
Do you see the port working is you use other output libraries, like WinRing0, DLPortIO etc?
Are you sure your using the right address (0x378 hex (888 decimal) for LPT1)?

Thanks,
Phil

Re: Don't see voltage indication on parallel port

Posted: Sat Apr 11, 2009 7:07 am
by asapir
Thanks Phil, I finally found the problem. When I check the signals I use a mirror image of the LTP port so instead of checking D0(pin 2) I used S5(pin 12).

Thanks for your fast replays.

Asi.

Re: Don't see voltage indication on parallel port

Posted: Sat Apr 11, 2009 1:45 pm
by phil
Doh... :oops:

Glad you have sorted it.