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-
- CLOCKDEV.SYS is a device driver written for the AT&T 6300 real time
- clock for use with DOS versions other than those supplied by AT&T. I use
- PCDOS 3.1 with my AT&T machine because the version 3.1 of DOS supplied by AT&T
- does not support 2K cluster sizes (It configures a 20 Meg hard disk with 8K
- clusters like version 2.1 !!).. But the lack of support for the built-in real
- time clock is really a pain when using PC-DOS (Imagine typing in the date and
- time every time you boot when you HAVE a clock-calender chip in your machine!)
- Use this program like any other DOS device drivers - Copy
- CLOCKDEV.SYS onto your system floppy disk or hard disk root directory and add a
- line in your CONFIG.SYS file which says,
- DEVICE=CLOCKDEV.SYS
- Now reboot the system and your DATE and TIME prompt will come up with
- the right numbers.
- Note : Due to limitations of the chip used on the real time clock
- calender, the system can show years correctly for only 4 years.
- The driver provided will work correctly till December 31,1987
- and the next day it will show a date of January 1, 1984.. This
- can be corrected by patching the driver. This can be done using
- DEBUG as follows.
- C>DEBUG CLOCKDEV.SYS
- -E0116 02
- -W
- Writing 00D6 bytes
- -Q
- C>
- The value of 2 at location 0116 would enable the driver to keep
- the year correctly from 1988 to 1991.. After that you would need
- to increment that number to 3.. (If you're still using the machine
- then !!)
-
- If you find any problems or bugs, please inform me and I'll try to
- correct them.. (The program has been working fine for me so far.. but as with
- ANY software.. one never knows !!!)
- Babu Kalakrishnan
- (415)-965-8859
-