AT&T 6300 Needs Driver for Date/Time Stamping (75723)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
This article was previously published under Q75723
After you install Microsoft MS-DOS 5.0 on an AT&T 6300, the machine
will not display the correct date or time at startup. This problem
occurs on the AT&T 6300 and AT&T 6300 WGS (Work Group System)
machines, which are 8088/8086-microprocessor based.
Another problem that has been reported with the AT&T 6300 clock is
that it will not read or display a 1992 date. This problem occurs
because the calendar chip was designed to function only up to and
including 1991. At the time the chip was developed, it was assumed
customers would upgrade their computers before the 1992 calendar year.
If you have AT&T MS-DOS version 4.0 or 4.01, you will find ATTCLOCK.SYS
on the original diagnostic disk. The file is not found on earlier
releases of AT&T MS-DOS or releases from other OEMs. Once you locate the
file, copy it to the root directory of the hard drive, and add the
following line to your CONFIG.SYS file:
After rebooting the machine, the time and date can be correctly set,
and the machine will maintain correct time and date. The one exception
to this solution is if you have an AT&T 6300 Plus and are using AT&T
The device driver ATTCLOCK.SYS is available on CompuServe in the IBMHW
forum, or from the AT&T bulletin board at (908) 769-6397.
The products included here are manufactured by vendors independent of
Microsoft; we make no warranty, implied or otherwise, regarding these
products' performance or reliability.
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