Owner manual

APLUS INTEGRATED CIRCUITS INC. APC5890
www.aplusinc.com.tw TEL : [phone]
4
4. ADDRESS ARRANGEMENT :
1) RAM :
0000-07FF : INTERNAL RAM, 1KX16.
0000-1FFF : EXTERNAL NON-BANK RAM(EXTRAMCS=1), 4KX16.
2) ROM :
z 4000-7FFF : data area for bank select, 8Kx16 each, max. to 64Mbit
z BANK ROM or BANK RAM.
z C000-FFFF : for System program or User Program, 8Kx16.
z FFF0, FFF1 : Coprocessor OK IRQ vector.
z FFF2, FFF3 : ADC IRQ vector.
z FFF4, FFF5 : not use
z FFF6, FFF7 : Timer IRQ(Fix_Timer IRQ or Timer_A IRQ) vector.
z FFF8, FFF9 : PA[7:0] IRQ vector.
z FFFA, FFFB : Timer_B NMI vector.
z FFFC, FFFD : RES vector.
z FFFE, FFFF : EXT IRQ vector.
z Priority is arranged as RES, NMI, OK_INT, ADC_INT,
TIMER_INT,PA_INT, and EXT_IRQ.
MEMORY MAPPING ( INTERNAL ROM )