參數(shù)資料
型號(hào): μPD30181
廠商: NEC Corp.
英文描述: 64-Bit RISC Microprosessor(64位RISC微處理器)
中文描述: 64位RISC Microprosessor(64位的RISC微處理器)
文件頁(yè)數(shù): 24/68頁(yè)
文件大?。?/td> 270K
代理商: ΜPD30181
24
μ
PD30700,30700L,30710
2.5 Virtual Storage
2.5.1 Virtual address space
The V
R
10000 has two operation modes, the 32-bit and 64-bit modes. In addition, it has three operating modes:
the user mode, supervisor mode, and kernel mode. Figures 2-8 through 2-11 show the virtual address spaces in the
respective modes.
Figure 2-8. User Mode Address Space
Note
In the 32-bit mode, the value of bit 31 is sign-extended to bits 32 through 63.
0xFFFF FFFF
32 bits
Note
Address error
2G bytes
w/TLB mapping
useg
64 bits
Address error
16T bytes
w/TLB mapping
xuseg
0x8000 0000
0x7FFF FFFF
0x0000 0000
0xFFFF FFFF FFFF FFFF
0x0000 1000 0000 0000
0x0000 0FFF FFFF FFFF
0x0000 0000 0000 0000
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