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General
Data Type
Register
Word data
Rn
Word data
En
Longword data
ERn
Notation
ERn:
General register
En:
General register E
Rn:
General register R
RnH:
General register RH
RnL:
General register RL
MSB:
Most significant bit
LSB:
Least significant bit
20
Data Format
15
MSB
31
MSB
Figure 2.7 General Register Data Formats (2)
15
MSB
0
LSB
16
15
0
LSB
0
LSB
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