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CHAPTER 3 CPU
3.7.5
Register Bank Pointer (PS: RP)
The register bank pointer (RP) is a register that indicates the first address of the
general-purpose register bank currently being used. The RP is used for real address
conversion when general-purpose register addressing is used.
■
Register Bank Pointer (RP)
Figure 3.7-10 shows the configuration of the register bank pointer (RP) register.
Figure 3.7-10 Configuration of the Register Bank Pointer (RP)
■
General-purpose Register Area and Register Bank Pointer
The register bank pointer points to the relationship between the general-purpose register of the F
2
MC-
16LX and the address in internal RAM where the general-purpose register exists. Figure 3.7-11 shows the
conversion rules used for the relationship between the contents of the RP and the real address.
Figure 3.7-11 Conversion Rules for Physical Address of General-purpose Register Area
•
Since the RP takes a value from 00
H
to 1F
H
, the first address of the register bank can be set in the range
from 000180
H
to 00037F
H
.
•
Although an assembler instruction can use an 8-bit immediate value transfer instruction for transfer to
the RP, in actuality only the lower 5 bits of the data are used.
•
The initial value of the RP register after a reset is 00
H
.
B4 B3 B2 B1 B0
: RP
0
0
0
0
0
Default value
⇒
bit
8
9
10
11
12
000180
H
000370
H
Conversion formula [000180
H
+ (RP)
×
10
H
]
Register bank 31
Register bank 16
Register bank 0
000280
H
When RP = 10
H
Содержание MB90460 Series
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Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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