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Contention between General Register Write and Compare Match in Buffer Operation: If a
compare match occurs in the T2 state of a general register write cycle, writing takes priority and
the buffer operation (data transfer from the buffer register to the general register) is not performed.
Figure 12.35 shows this timing.
Compare
match signal
Write signal
Address
φ
GR address
Buffer register
GR write cycle
T1
T2
X
GR
N
M (GR write data)
Figure 12.35 Contention between General Register Write and Compare Match
in Buffer Operation
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