NEC Network Controller uPD98502 - Manual (Page 111)

CHAPTER 2 V R 4120A
Preliminary User’s Manual S15543EJ1V0UM 111
Figure 2-30. Kernel Mode Address Space
32-bit mode
Note 1
0.5 Gbytes with
TLB mapping
0.5 Gbytes with
TLB mapping
0.5 Gbytes without
TLB mapping
uncacheable
64-bit mode
DFFF_ FFFFH
E000_ 0000H
C000_ 0000H
FFFF_ FFFFH FFFF_ FFFF_ FFFF_ FFFFH
kuseg
kseg0
kseg1
ksseg
kseg3
7FFF_FFFFH
0000_0000H
8000_ 0000H
xkuseg
xksseg
xkphys
xkseg
ckseg0
ckseg1
ckseg
cksseg
BFFF_FFFFH
FFFF_ FFFF_ 9FFF_ FFFFH
FFFF_ FFFF_ A000_ 0000H
0.5 Gbytes without
TLB mapping
cacheable
2 Gbytes with TLB
mapping
FFFF_ FFFF_ E000_ 0000H
FFFF_ FFFF_ DFFF_ FFFFH
FFFF_ FFFF_ C000_ 0000H
FFFF_ FFFF_ BFFF_ FFFFH
FFFF_ FFFF_ 7FFF_ FFFFH
FFFF_ FFFF_ 8000_ 0000H
C000_ 00FF_ 7FFF_ FFFFH
C000_ 00FF_ 8000_ 0000H
0.5 Gbytes with
TLB mapping
0.5 Gbytes with
TLB mapping
0.5 Gbytes without
TLB mapping
uncacheable
0.5 Gbytes without
TLB mapping
cacheable Note 2
Address error
With TLB mapping
Without TLB mapping
Address error
1 Tbyte with TLB
mapping
Address error
1 Tbyte with TLB
mapping
4000_ 00FF_ FFFF_ FFFFH
4000_ 0100_ 0000_ 0000H
C000_ 0000_ 0000_ 0000H
BFFF_ FFFF_ FFFF_ FFFFH
8000_ 0000_ 0000_ 0000H
7FFF_ FFFF_ FFFF_ FFFFH
3FFF_ FFFF_ FFFF_ FFFFH
4000_ 0000_ 0000_ 0000H
0000_ 0000_ 0000_ 0000H
0000_ 00FF_ FFFF_ FFFFH
0000_ 0100_ 0000_ 0000H
A000_ 0000H
9FFF_FFFFH
Notes 1. The V R 4120A uses 64-bit addresses within it. For 32-bit mode addressing, bit 31 is sign-extended to
bits 32 to 63, and the resulting 32 bits are used for addressing. Usually, a 64-bit instruction is used for
the program in 32-bit mode.
2. The K0 field of the Config register controls cacheability of kseg0 and ckseg0.