Parallel Port Checking Differences between MS-DOS & OS/2 (99314)
The information in this article applies to:
- Microsoft LAN Manager 2.2
This article was previously published under Q99314 SUMMARY
If a printer works under the 3Com 3Share operating system environment
in MS-DOS mode, but stops working when placed under Microsoft OS/2, the
problem may be due malfunctioning parallel ports and the different methods
MS-DOS and MS OS/2 use to handle printing to parallel ports.
If the computer's parallel ports for some reason do not generate the
interrupts that inform the host to send more data, printing continues under
MS-DOS, which polls ports to see if they are ready for more data. OS/2, on
the other hand, requires port-generated interrupts, and if they are not
received the printer may operate sporadically or be declared offline.
| Modification Type: | Major | Last Reviewed: | 9/30/2003 |
|---|
| Keywords: | KB99314 |
|---|
|