Casio QT-2100 - Page 18

— 16 —
POWER OFF
씮POWER ON
CPU PORT
INITIALIZ
DRAM
OPERATION
I/O CONTROLLER
OPERATION
FROM
OPERATION
KEY
INITIALIZ
NO
YES
YES
YES
NO
OK
OK
NO
NO
NO
RESUME
OPERATION
: Operations in BOOT ROM
Note: When CHECK SUM is NG, BOOT ROM waits for power off again because of error.
It sends information about FINIT/INIT/RESUME and the input register at time of INIT to applications.
FINIT
OPERATION
CHECK
SUM?
CHECK
SUM?
11
1
1
StartUp C language
for BOOTER
Press INIT button
Press 'FINIT' button
Display INIT
Process register
Process register
IPL boot code
INIT OPERATION
5-3. SYSTEM FLOW