Setting The Clock - Commodore PET User Manual

SETTING THE CLOCK
Another PET feature is the real-time clock. The PET clock keeps real
time in a 24-hour cycle by hours, minutes, and seconds. The reserved string
variable TIME$ or TI$ keeps track of the time. To set the clock, use the following
format:
TIME$ = "hhmmss"
where:
hh is the hour between 0 and 23.
mm is the minutes between 0 and 59.
55 i5 the seconds between 0 and 59.
For hh, enter the hour of the day from 00 (12 am) to 23 (11 PM). The PET is on a
24-hour cycle so that you can distinguish between AM and PM, unlike 12-hour
clocks. The hours from 00 to 11 designate AM, and the hours from 12 to 23 desig-
nate PM, returning to 00 at midnight. At midnight. when one 24-hour cycle ends
and another begins, hh, mm, and ss are ail equal to zero.
When initializing TIME$ to the actual time. type in a time a few seconds in
the future. When that actual time is reached, press RETURN and the PET clock is
set.
TIME$=" 120150<CR>
To retrieve the time any time after the initialization of TIME$, type the
following in calculator or program mode:
?TIME$ <CR>
and the PET will display the time in hhmmss:
?TH1E$
121::12131::1
The PET clock keeps time until the PET is turned off. The clock needs to
be reset when the PET is powered up aga in.
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