Atari ST series Technical Reference Manual page 375

The Intelligent Keyboard Controller
$1C Interrogate Time-of-Day Clock
T h is c o m m a n d c a u s e s t h e I K B D t o s e n d a p a c k e t w h i c h g i v e s i n f o r m a t i o n
a b o u t t h e c u r r e n t t i m e - o f - d a y c l o c k s e t t i n g s . T h e i n f o r m a t i o n t h a t 's r e ­
t u r n e d is s t o r e d in p a c k e d B C D f o r m a t .
Input parameters
N o n e
Packet returned
Byte
Number Description
1 $ F C ( t i m e o f d a y p a c k e t h e a d e r )
2 Y e a r ( l a s t t w o d i g it s o n l y )
3 M o n t h
4 D a y
5 H o u r s ( 0 - 2 4 )
6 M i n u t e s
7 S e c o n d s
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