Software Flow Chart - Acer SPECTRUM AL801 Service Manual

5-3

SOFTWARE FLOW CHART

I. Power-On Subroutine CHART
POWER-ON START
Initial MCU I/O, Interrupt vector & Ram
Check Eeprom is empty ?
Check White-balance data(C1 & C2) same with the backup data ?
Check POC( backlight counter) data same with the backup data ?
IF not same, overwrite the data with backup value.
Check Previous power-switch status from Eeprom, & other system status
Initial GMZAN2
Check if in Factory mode?(when power-on,press the
MENU Button will be in FACTORY mode)
Clear factory mode flag
MAIN-SUBROTINE LOOP
No
OK
No
Yes
Initial 1.POC (backlight counter)
2. Clr all mode value
Yes
12
SET factory mode flag