Address Map - Sony NWS-1510 Service Manual

3-2. ADDRESS MAP
Addresses are as follows from the point of view of the CPU:
$0
$1000.0000
$20000000
$30000000
$40000000
$80000000
$c0000000
$d0000000
$e0000000
$f0000000
$ffffffff
+--------+ - - - - - - $ 0 +---------------+
I
*1
I I
Standard memory C4MB)
I
+ 1 ---*-- 2 ---~I I
IC-23, 24, 48, 491
I\
$400000 +---------------+
+--------+ '
*
1
I
Expanded memory ( 4 MB)
I
I
*3
I \ I
IC-16, 17, 46, 471
++ll~~---_*-_4
____
~+tl
$800000
r----~:---------r
I
IC-10,15,32,331
$c00000 +---------------+
I I
*2
I ,, I
I I I
I
C-8,
9, 2 5,
31
I
+--------+ $1000000+---------------+
I I I I
I I
*3
I I
I I
+--------+
I
I '{:( I I I
+--------+ $ff f ff ff+---------------+
I I Image in '{:(
+--------+
*
4
I I
PORT (I/O, ROM, registers)
+--------+
I I
SLOT (expansion I/O slots)
+--------+
Addresses A31 and A30 are not used, the images from *l - *4
appear as *2 - *4. The address space from $2-0000000$ -
SeDOOUOOO~ is not used and addresses from Scooonooot and
below are configured in software so that the MMU is not used,
making direct access possible.
NWS-1510/1530/1580
3-3