Owner manual

APLUS INTEGRATED CIRCUITS INC. APC5890
www.aplusinc.com.tw TEL : [phone]
5
MEMORY MAPPING ( EXTTERNAL ROM )
3) Others :
z 3FE0 System Flag. Read only. :
3FE0
0 1
BIT - 0 NO USE
BIT - 1 NO USE
BIT - 2 ADC NO ERROR. ADC ERROR.
TIMER_A INT FLAG
BIT - 3
T
IMER IRQ TIMER_A INT FLAG
1 1 ……….. TIMER_A INT
1 0 ………. FIX_TIMER INT
1 X ………. NO TIMER INT
BIT - 4 NO USE
BIT - 5 OK FLAG(COPROCESSOR OK)
BIT - 6 COPROCESSOR CARRY.
BIT - 7 TONE0 OR TONE1 ENABLE.