|
Issue:
How do I overcome the use of more than one port of the AT-FAST at a time
on a Microsoft Windows NT operating system. For example I cannot run
TERMINAL.EXE more than one time and if I try to open more than one port
with this application, I get an error message saying: "Error IRQ Busy". The
driver version I am using is 1.0.
Cause:
The driver relies on the 'Permit_Share' serial option being set to 1 in the registry. This allows interrupt sharing for serial ports and without it set you will only be able to open 1 port at a time. This option used to be set to 1 as default on NT systems but this no longer seems to be the case.
Solution:
You can edit the registry to allow the sharing of the serial ports by:
1. Find and run the program regedit.exe for Win NT4.0 or regedt32.exe in Win NT3.51 this is located in the WinNT directory.
2. Open, by clicking on it, the HKEY_LOCAL_MACHINE selection
3. Open SYSTEM
4. Open CurrentControlSet
5. Open Services
6. Open Serial
Look for the 'Permit_Share' flag in the right hand window and double click on it, this will bring up a dialog allowing you to change the value from 0 to 1.
Be sure to save the registry following this change and you will need to shutdown and Restart Microsoft Windows NT.
The alternative is to upgrade to the new driver version posted on our ftp site called winnt40.exe. This driver version is 1.1.
Article
ID: |
152 |
| Published: |
2/3/2003 8:27:59 AM |
Last
Modified: |
2/3/2003 9:16:48 AM |
Issue Type: |
Trouble Shooting |
|