Conflict Between CTTY and Command-Line Editing Utilities (67426)
The information in this article applies to:
• Microsoft MS-DOS operating system 3.1
• Microsoft MS-DOS operating system 3.2
• Microsoft MS-DOS operating system 3.21
• Microsoft MS-DOS operating system 3.3
• Microsoft MS-DOS operating system 3.3a
• Microsoft MS-DOS operating system 4.0
• Microsoft MS-DOS operating system 4.01
• Microsoft MS-DOS operating system 5.0
This article was previously published under Q67426
SUMMARY
Command-line editors, such as MS-DOS 5.0 Doskey, may experience
problems when a CTTY command is issued. Command-line editors use
system BIOS calls to manipulate keyboard input and display so they can
provide fast, flexible command-line editing. The CTTY command
redirects MS-DOS character input and output calls, but not system BIOS
calls. This can be confusing to command-line editors, producing
unpredictable results.
As a result, DOSKEY and such third-party command-line editors as
DOSEDIT, CED, and PCED should not be used when the CTTY command is
executed.
| Modification Type: |
Major |
Last Reviewed: |
11/26/2003 |
| Keywords: |
KB67426 |
|