🚀 go-pugleaf

In order to accomodate an add-on hard disk, I've
recently upgraded my 1984 Sperry PC from Sperry DOS 2.11
(licenced from MS of course) to MS DOS 3.3.  Before the
upgrade, the system was able to remember the time and
date once it was set; with the new DOS, the system clock
forgets the time and date when I re-boot.  I don't have
a clock option in any of the expansion slots, and the
worthless documentation that came with the machine doesn't
mention the system clock.  My questions are:

1.  How was my system, under Sperry DOS 2.11, able to keep
    track of the time and date, even when turned off?

2.  How can I get the system clock to keep track of the time
    and date with MS DOS 3.3?

I suspect the old DOS was grabbing the date and time from
somewhere every time it booted up, and the new DOS isn't
doing this.  I've never heard of this; how does it work?
-- 
               Curtis W. Griesel, griesel@umn-cs.cs.umn.edu
                      Coordinator of Commputer Access
 Microcomputer, Workstation and Network Center; U of Minnesota, Minneapolis
 "Disability is not the problem, peoples' attitude toward the disabled is".