Apc5830, Aplus integrated circuits inc, Address arrangement – Rainbow Electronics APC5830 User Manual
Page 4
APLUS INTEGRATED CIRCUITS INC.
APC5830
www.aplusinc.com.tw
TEL : 886-2-2782-9266
4
4.
ADDRESS ARRANGEMENT :
1) RAM :
0000-07FF
:
I
NTERNAL
RAM,
1K
X
16.
0000-1FFF
:
E
XTERNAL
N
ON
-B
ANK
RAM(E
XTRAMCS
=1),
4K
X
16.
2)
ROM
:
z
4000-7FFF
:
DATA AREA FOR BANK SELECT
,
8K
X
16
EACH
,
MAX
.
TO
64M
BIT
BANK
ROM
OR
BANK
RAM.
z
C000-FFFF
:
FOR
S
YSTEM PROGRAM OR
U
SER
P
ROGRAM
,
8K
X
16.
z
FFF0,
FFF1
:
C
OPROCESSOR
OK
IRQ
VECTOR
.
z
FFF2,
FFF3
:
ADC
IRQ
VECTOR
.
z
FFF4,
FFF5
:
NOT USE
z
FFF6,
FFF7
:
T
IMER
IRQ(F
IX
_T
IMER
IRQ
OR
T
IMER
_A
IRQ)
VECTOR
.
z
FFF8,
FFF9
:
PA[7:0]
IRQ
VECTOR
.
z
FFFA,
FFFB
:
T
IMER
_B
NMI
VECTOR
.
z
FFFC,
FFFD
:
RES
VECTOR
.
z
FFFE,
FFFF
:
EXT
IRQ
VECTOR
.
P
RIORITY IS ARRANGED AS
RES,
NMI,
OK_INT,
ADC_INT,
TIMER_INT,PA_INT,
AND
EXT_IRQ.
MEMORY MAPPING ( INTERNAL ROM )