參數(shù)資料
型號(hào): Intel387 sx
廠商: Intel Corp.
英文描述: SX Math Coprocessor(32位數(shù)學(xué)協(xié)處理器)
中文描述: 山西數(shù)學(xué)協(xié)處理器(32位數(shù)學(xué)協(xié)處理器)
文件頁(yè)數(shù): 32/47頁(yè)
文件大?。?/td> 443K
代理商: INTEL387 SX
Intel387
TM
SX MATH COPROCESSOR
5.4 BUSY
Y
and PEREQ Timing
Relationship
Figure 5-5 shows the activation of BUSY
Y
at the
beginning of instruction execution and its deactiva-
tion upon completion of the instruction. PEREQ is
activated within this interval. If ERROR
Y
is ever as-
serted, it would be asserted at least six CPUCLK2
periods after the deactivation of PEREQ and would
be deasserted at least six CPUCLK2 periods before
the deactivation of BUSY
Y
.
240225–11
NOTES:
1. Instruction dependent.
2. PEREQ is an asynchronous input to the Intel386
TM
Microprocessor; it may not be asserted (instruction dependent).
3. More operand transfers.
4. Memory read (operand) cycle is not shown.
Figure 5-5. STEN, BUSY
Y
, and PEREQ Timing Relationships
32
32
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