EC-556 Tom
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Transcript of EC-556 Tom
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7/25/2019 EC-556 Tom
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Tomasulo+ROB Example
Reservation station gains a column
All tags now refer to ROB entries Begin our simulation with Time = 0
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Tomasulo+ROB Example
Time = 1
First L. issues
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Tomasulo+ROB Example
Time = !
Loa"1 e#ecutes $"one at t=%& 'econ" L. issues
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Tomasulo+ROB Example
Time=(
Loa"! e#ecutes $"one at t=)& *+L. issues
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Tomasulo+ROB Example
Time=%
Loa"1 ,rites '+B. issues
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Tomasulo+ROB Example
Time=)
ROB-1 commits Loa"! ,rites A""1 / *ult1 u"ate will e rea"2
to e#ecute ne#t c2cle 34. issues
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Tomasulo+ROB Example
Time=5
ROB-! commits '+B. an" *+L. e#ecute $6nish at
t=78 t=158 res&
A. issues
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Tomasulo+ROB Example
Time=7
A""1 writesA""! u"ates an" will e
rea"2 to e#ecute ne#t c2cle
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Tomasulo+ROB Example
Time=9
A""! e#ecutes $6nish at t=11&
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Tomasulo+ROB Example
Time=11
A""! writes
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Tomasulo+ROB Example
Time=15
*ult1 writes *ult! u"ates $will e rea"2 toe#ecute ne#t c2cle&
:uestion;