[NA-User] LPT1 interface problem on new computer

Steve Maki steve@oakcom.com
Wed, 19 Jun 2002 13:51:07 -0400

Old computer was DOS 6.2 only, new one is dual boot DOS 6.2/WIN2000,
booted to pure DOS of course. At least I THINK it's pure DOS :-) LPT
is set for same address and IRQ as before.
Steve K8LX

>The problem could be the operating system.  What was the old versus the new?
>Tom, W1TO

>> Problem:
>> Swapped in a new computer, and now I can't key the radio unless I
>> unplug the PTT line. Problem is the same on several different
>> (both homemade and commercial) LPT keying interfaces. With the
>> PTT line hooked to the radio, the PTT works, and the paddle input
>> works (I hear the computer generated CW), but the radio is not keyed.
>> With PTT disconnected, radio keys fine. I tried various LPT settings
>> in the computer's BIOS, but nothing fixes it. Apparently the LPT
>> pinout on this box is different somehow.
>> Has anyone run into this?