Apple Lisa - Page 31

Confidential
Lisa Hardware Reference Manual
RESET CODES
In addition to the key up and key down information, the keyboard COPS
produces several two byte reset codes. The two bytes consist of a
reset character ($80) and a code number for the following conditions:
Reset Code Condition
---------------------------------------.--. --------------------------~-
FF
FE
FD
FC
FB
FO - FA
Ey
o - Dr
Keyboard COPS failure detected
I/O board COPS failure detected
Keyboard unplugged. The reset code of the
keyboard ID will follow when the keyboard is
plugged back in
Clock timer interrupt
Soft power switch pressed (do a Soft-off)
Reserved for future use
Clock
data follows (five bytes). "y" is the
year. Clock information is formatted,
$80 $Ey dd dh hm ms st
where ddd is the day, hh is the hour, mm is
the minute, ss is the second, and t is the
tenth of a second.
Keyboard ID number (the current and only
keyboard ID is 01). The keyboard to reset
code is produced whenever the keyboard COPS
is reset. This happens when the power is
turned on and when the keyboard is plugged in.
Page 31
7-Jul-81