MS-DOS/Win16 Serial Communication Applications on NT (93218)
The information in this article applies to:
- Microsoft Windows NT Server 3.1
- Microsoft Windows NT Workstation 3.1
This article was previously published under Q93218 SUMMARY
When running MS-DOS or Windows version 3.1 serial communications
applications that directly access serial port hardware, you may
enhance performance of these applications by using software
handshaking (xon/xoff) instead of hardware handshaking (cts/rts).
Because hardware must be virtualized under NT, checking the cts/rts
signals directly will incur an unavoidable performance degradation.
Using xon/xoff handshaking avoids this problem since xon/xoff
handshaking does not require accessing the serial port hardware
directly.
Note that this does not apply to Windows version 3.x or Win32 applications
that correctly use the Comm APIs to do communications.
| Modification Type: | Major | Last Reviewed: | 10/30/2003 |
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| Keywords: | kbHardware KB93218 |
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