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Table 2.2 Registers that can be operated for 4580 Group MCUs
Register Reference Modification Register Reference Modification
PC Yes Yes W2 Yes Yes
CY Yes Yes W6 Yes Yes
A Yes Yes Q3 Yes Yes
B Yes Yes Q4 Yes Yes
X Yes Yes K0 Yes Yes
Y Yes Yes K1 Yes Yes
Z Yes Yes K2 Yes Yes
D Yes Yes PU0 - Yes
E Yes Yes PU1 - Yes
SP Yes - PU2 - Yes
V1 Yes Yes MR Yes Yes
V2 Yes Yes R1 - Yes
I1 Yes Yes R2 - Yes
W1 Yes Yes