View Full Version : xp problem...

12-09-2004, 03:00 AM
i dont know what to do... my data pins on paralel port are crazy... they`re always high... what ever i program they are always high... please help me....

12-09-2004, 08:31 AM
XP doest give direct access to your parallel port
This page may help you out.

I have a dual OS on my PC..
i use 98 for interfacing and stuff and XP for visual gratification!!!!
:D :D :D


12-09-2004, 03:33 PM
i have dual OS on my PC to... but can my program work on WinXp if i make it in Win98... on which page you think... machineqrid? THANKS!

12-09-2004, 05:20 PM
Uhhhh, forgot the link


no it won't work even if u make it in 98..

12-09-2004, 05:26 PM
no it won't work even if u make it in 98..
let me rephrase it

it'll work in XP if you got the necessary drivers..i've never got over the problem..so i use 98 for the moment


12-10-2004, 04:19 AM
...oh men... but my project is almost finished and it need to be runed under xp... gerry, please try to find out how to solve this problem... and can you tell me, please, how to make something in c compiler to do it in some particular time... somethin like "...outportb(0x378,0x00)... at 14:00.." Thanks!!

01-17-2005, 07:15 AM
see parallel port tutorials


if u want to use XP then u have to use VB

download dll from


for more question see


12-30-2005, 05:27 PM
use inpout32.dll for interfacing parallel port in XP,just goggle for inpout32.dll and use it in VB,and call functions inp() and out() in your routine,dont forgget to include the dll in your program

Private Declare Function Inp Lib "inpout32.dll" _
Alias "Inp32" (ByVal PortAddress As Integer) As Integer
Private Declare Sub Out Lib "inpout32.dll" _
Alias "Out32" (ByVal PortAddress As Integer, ByVal Value As Integer)

Private Sub Command1_Click()
Out 888, 170 '170 is the data to be outputed
Text1.Text = Inp(889) ' 888=0x378
'Out 1914, 128
Do While Check1.Value <> 0

Text1.Text = Inp(889) ' 889=0x379
End Sub

08-06-2006, 04:43 PM
u just install userport, then everything will work in winXP

Bibin John