參數(shù)資料
型號(hào)： KU386
廠商： Intel Corp.
英文描述： SX MICROPROCESSOR
中文描述： SX微處理器
文件頁(yè)數(shù)： 58/102頁(yè)
文件大?。?/td> 1268K
代理商： KU386
Intel386
TM
SX MICROPROCESSOR
SHUTDOWN INDICATION CYCLE
The Intel386 SX Microprocessor shuts down as a
result of a protection fault while attempting to pro-
cess a double fault. Signaling its entrance into the
shutdown state, a shutdown indication cycle is per-
formed. The shutdown indication cycle is identified
by the state of the bus definition signals shown in
Bus Cycle Definition Signals
and an address of 0.
The shutdown indication cycle must be acknowl-
edged by READY
Y
asserted. A shutdown Intel386
SX Microprocessor resumes execution when NMI or
RESET is asserted.
ENTERING AND EXITING HOLD
ACKNOWLEDGE
The bus hold acknowledge state, T
h
, is entered in
response to the HOLD input being asserted. In the
bus hold acknowledge state, the Intel386 SX Micro-
processor floats all outputs or bidirectional signals,
except for HLDA. HLDA is asserted as long as the
Intel386 SX Microprocessor remains in the bus hold
acknowledge state. In the bus hold acknowledge
state, all inputs except HOLD, FLT
Y
and RESET are
ignored.
240187–30
Figure 5.15. Example Shutdown Indication Cycle from Non-Pipelined Cycle
58
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