參數(shù)資料
型號: μPD30100
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)
文件頁數(shù): 23/52頁
文件大?。?/td> 365K
代理商: ΜPD30100
23
μ
PD30100
Figure 3-15. Overview of Address Conversion
Reading and writing of TLB entries is performed by loading/storing between the TLB entry specified by the
index register or the random register, and the entry Hi, entry Lo1, entry Lo0, and page mask registers.
Figure 3-16. Overview of TLB Operation
Virtual address
Selector
Physical
address
TLB
y + 8
y + 1y
x + 1
x _ 1
0
0
x _ 1
x
31
x = 10, 12, 14, 16, 18
y = 31 (in 32-bit mode)
63 (in 64-bit mode)
ASID
<1>
<2>
<3>
<4>
<1>
<2>
<3>
<4>
31
0
A virtual address page number (VPN)
is compared with VPN in TLB.
If the two VPNs coincide, a page frame
number (PFN) indicating the higher bits
of a physical address is output to the selector.
If the lowest bit of VPN is 0, an even page is
selected; if the bit is 1, an odd page is selected.
The selected page is output to the higher bits
of the physical address.
The offset is output to the lower bits of the physical
bit not via TLB.
VPN
offset
x
Index register
Random register
Page mask register
Entry Hi register
Entry Lo1 register Entry Lo0 register
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