View Full Version : serial port woes

07-21-2002, 08:23 PM
my apologies as this is not a dos-specific programming question. however, it also is not a C, C++, C#, windoze, linux, or game specific programming question. so i really didnt know where to stick it.

i am interfacing the serial port. however inportb (0x3fe); (serial port base address is 0x3f8) *always* returns 0xff. how could this be so? i mean how could it do that on two consecutive reads?

07-22-2002, 09:05 AM
Check these out. They're good sources to start with.


07-22-2002, 03:19 PM
i've worked with those, and actually got all my serial port information from that website. :) i've come to the conclusion that my serial port is hosed or doesnt exist at that address; the program works fine on my other computer. but both win98 and bios calls do return the serial port at that address; oh well.

07-22-2002, 03:40 PM
I love that website. It's got excellent info.

Anyway, I'll look at your code if you want me to.