This article was previously published under Q75723
This article has been archived. It is offered "as is" and will no longer be updated.
After you install Microsoft MS-DOS 5.0 on an AT&T 6300, the machinewill not display the correct date or time at startup. This problemoccurs 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 isthat it will not read or display a 1992 date. This problem occursbecause the calendar chip was designed to function only up to andincluding 1991. At the time the chip was developed, it was assumedcustomers 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.SYSon the original diagnostic disk. The file is not found on earlierreleases of AT&T MS-DOS or releases from other OEMs. Once you locate thefile, copy it to the root directory of the hard drive, and add thefollowing 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 exceptionto this solution is if you have an AT&T 6300 Plus and are using AT&TMS-DOS 3.3.
The device driver ATTCLOCK.SYS is available on CompuServe in the IBMHWforum, or from the AT&T bulletin board at (908) 769-6397.
The products included here are manufactured by vendors independent ofMicrosoft; we make no warranty, implied or otherwise, regarding theseproducts' performance or reliability.