Memory Map - NEC uPD98502 User Manual

1.9 Memory Map

Using a 32-bit address, the processor physical address space encompasses 4 Gbytes. V
physical address space as shown in the following figure.
FFFF_FFFFH
2000_0000H
1FFF_FFFFH
1F00_0000H
1E FF_FFFFH
1030_0000H
102F_FFFFH
1010_0000H
100F_FFFFH
1002_0000H
1001_FFFFH
1001_0000H
1000_FFFFH
1000_5000H
1000_4FFFH
1000_4000H
1000_3FFFH
1000_3000H
1000_2FFFH
1000_2000H
1000_1FFFH
1000_1000H
1000_0FFFH
1000_0000H
0FFF_FFFFH
0000_0000H
CHAPTER 1 INTRODUCTION
Figure 1-10. Memory Map
M irror of
0000_0000H - 1FFF_FFFF
B oot R O M /Flash
R FU
P C I C ontroller
(For P C I W indow )
R FU
A TM C ell Processor
R FU
P C I C ontroller
(For R egister)
E thernet Controller #2
E thernet Controller #1
U S B C ontroller
S ystem C ontroller
S D R A M
Preliminary User's Manual S15543EJ1V0UM
A ctual size of P R O M /Flash is m ax. 8 M B .
16 M B
C onfiguration:
1 M B : 1FCF_FFFFH -1FC 0_0000H
2 M B : 1FDF_FFFFH -1FC 0_0000H
4 M B : 1FFF_FFFFH -1FC 0_0000H
8 M B : 1FFF_FFFFH -1F80_0000H
2 M B
64 K B
4 K B
4 K B
4 K B
4 K B
A ctual size of S D R A M is m ax. 32 M B .
4 K B
C onfiguration:
04 M B : 003F_FFFFH -0000_0000H
08 M B : 007F_FFFFH -0000_0000H
16 M B : 00FF_FFFFH -0000_0000H
32 M B : 01FF_FFFFH -0000_0000H
256 M B
4120A uses this 4-Gbyte
R
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