=== Clock The Clock device provides access to the current date and time, as well a user-configurable countdown timer.

;clock
.macro clock.year             $20
.macro clock.month            $22
.macro clock.monthday         $23
.macro clock.weekday          $24
.macro clock.hour             $25
.macro clock.minute           $26
.macro clock.second           $27
.macro clock.timer            $28
.macro clock.on_timer         $2A

== [2][RO] year Two bytes identifying the current year. == [1][RO] month A byte identifying the current month (1-12) == [1][RO] monthday A byte identifying the current day of the month. == [1][RO] weekday day of the week (0-6). == [1][RO] hour A byte identifying the current hour (0-23). == [1][RO] minute A byte identifying the current minute (0-59). == [1][RO] second A byte identifying the current second (0-59). == [2][RW] timer Two bytes identifying the start of the countdown timer, expressed in 1/256 of a second. == [2][RW] on_timer Address of the subroutine that will be executed when the countdown timer reaches 0.