35
CHAPTER 5 CPU
5.1.2
Direct Bank Pointer (DP)
The direct bank pointer (DP) in bits 10 to 8 of the program status (PS) register specifies
the area to be accessed by direct addressing.
■
Configuration of Direct Bank Pointer (DP)
Figure 5.1-4 shows the configuration of the direct bank pointer.
Figure 5.1-4 Configuration of Direct Bank Pointer
The areas from 0000
H
to 007F
H
and 0080
H
to 047F
H
can be accessed by direct addressing. Access to
0000
H
to 007F
H
is specified with an operand regardless of the value in the direct bank pointer. Access to
0080
H
to 047F
H
is specified with the value in the value of the direct bank pointer and the operand.
Table 5.1-1 shows the relationship between direct bank pointer (DP) and access area; Table 5.1-2 lists the
direct addressing instructions.
RP
DP
CCR
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
PS
R4
R3
R2
R1
R0
DP2 DP1 DP0
H
I
IL1
IL0
N
Z
V
C
000
B
DP Initial
value
Table 5.1-1 Direct Access Pointer and Access Area
Direct bank pointer (DP) [2:0]
Operand-specified dir
Access area
XXX
B
(It doesn't affect the mapping. )
0000
H
to 007F
H
0000
H
to 007F
H
000
B
(Initial value)
0080
H
to 00FF
H
0080
H
to 00FF
H
001
B
0100
H
to 017F
H
010
B
0180
H
to 01FF
H
011
B
0200
H
to 027F
H
100
B
0280
H
to 02FF
H
101
B
0300
H
to 037F
H
110
B
0380
H
to 03FF
H
111
B
0400
H
to 047F
H
Содержание F2 MC-8FX Family
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Страница 30: ...16 CHAPTER 1 DESCRIPTION 1 FPT 64P M23 FPT 64P M24 2 For the I O circuit type refer to 1 8 I O Circuit Type ...
Страница 34: ...20 CHAPTER 1 DESCRIPTION ...
Страница 35: ...21 CHAPTER 2 HANDLING DEVICES This chapter gives notes on using 2 1 Device Handling Precautions ...
Страница 38: ...24 CHAPTER 2 HANDLING DEVICES ...
Страница 39: ...25 CHAPTER 3 MEMORY SPACE This chapter describes memory space 3 1 Memory Space 3 2 Memory Map ...
Страница 43: ...29 CHAPTER 4 MEMORY ACCESS MODE This chapter describes the memory access mode 4 1 Memory Access Mode ...
Страница 56: ...42 CHAPTER 5 CPU ...
Страница 73: ...59 CHAPTER 6 CLOCK CONTROLLER ...
Страница 96: ...82 CHAPTER 6 CLOCK CONTROLLER ...
Страница 104: ...90 CHAPTER 7 RESET ...
Страница 105: ...91 CHAPTER 8 INTERRUPTS This chapter explains the interrupts 8 1 Interrupts ...
Страница 174: ...160 CHAPTER 10 TIMEBASE TIMER ...
Страница 184: ...170 CHAPTER 10 TIMEBASE TIMER ...
Страница 218: ...204 CHAPTER 13 WATCH PRESCALER ...
Страница 257: ...243 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 261: ...247 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 288: ...274 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 301: ...287 CHAPTER 17 16 BIT PPG TIMER ...
Страница 316: ...302 CHAPTER 17 16 BIT PPG TIMER ...
Страница 382: ...368 CHAPTER 21 UART SIO DEDICATED BAUD RATE GENERATOR ...
Страница 390: ...376 CHAPTER 22 I2C ...
Страница 395: ...381 CHAPTER 22 I2C ...
Страница 399: ...385 CHAPTER 22 I2C ...
Страница 430: ...416 CHAPTER 23 10 BIT A D CONVERTER ...
Страница 476: ...462 CHAPTER 24 LCD CONTROLLER ...
Страница 482: ...468 CHAPTER 25 LOW VOLTAGE DETECTION RESET CIRCUIT ...
Страница 494: ...480 CHAPTER 26 CLOCK SUPERVISOR ...
Страница 507: ...493 CHAPTER 27 REAL TIME CLOCK ...
Страница 523: ...509 CHAPTER 27 REAL TIME CLOCK ...
Страница 532: ...518 CHAPTER 27 REAL TIME CLOCK ...
Страница 536: ...522 CHAPTER 28 256 KBIT FLASH MEMORY ...
Страница 554: ...540 CHAPTER 28 256 KBIT FLASH MEMORY ...
Страница 564: ...550 CHAPTER 29 EXAMPLE OF SERIAL PROGRAMMING CONNECTION ...
Страница 595: ...581 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Страница 596: ...582 INDEX Index ...
Страница 597: ...583 INDEX ...
Страница 599: ...585 Pin Function Index V2 LCD power supply driving pin 2 439 V3 LCD power supply driving pin 3 439 ...
Страница 600: ...586 Pin Function Index ...
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