參數(shù)資料
型號: Alpha 21164
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Alpha Microprocessor(64位微處理器)
中文描述: 阿爾法微處理器(64位微處理器)
文件頁數(shù): 59/115頁
文件大?。?/td> 846K
代理商: ALPHA 21164
Internal Processor Registers
59
PALcode Storage Registers
8.3 PALcode Storage Registers
The 21164 IEU register file has eight extra registers that are called the PALshadow
registers. The PALshadow registers overlay R8 through R14 and R25 when the CPU
is in PALmode and ICSR<SDE> is set. Thus, PALcode can consider R8 through
R14 and R25 as local scratch. PALshadow registers cannot be written in the last two
cycles of a PALcode flow. The normal state of the CPU is ICSR<SDE> = ON.
PALcode disables SDE for the unaligned trap and for error flows.
1
BC_CONTROL<01> must be 0 when reading any IPR in this table.
Table 11 CBU Internal Processor Register Descriptions
Register
Description
Type
1
Address
SC_CTL
Scache control
RW
FF FFF0 00A8
SC_STAT
Scache status
R
FF FFF0 00E8
SC_ADDR
Scache address
R
FF FFF0 0188
BC_CONTROL
Bcache control
W
FF FFF0 0128
BC_CONFIG
Bcache configuration
W
FF FFF0 01C8
BC_TAG_ADDR
Bcache tag address
R
FF FFF0 0108
EI_STAT
External interface status
R
FF FFF0 0168
EI_ADDR
External interface address
R
FF FFF0 0148
FILL_SYN
Fill syndrome
R
FF FFF0 0068
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