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CHAPTER 3 CPU
3.7.3
Processor Status (PS)
The processor status (PS) consists of CPU control bits and bits that indicate the CPU
status. The PS register consists of the following three registers:
• Interrupt level mask register (ILM)
• Register bank pointer (RP)
• Condition code register (CCR)
■
Processor Status (PS) Configuration
The processor status (PS) consists of CPU control bits and bits that indicate the CPU status. Figure 3.7-8
shows the configuration of the processor status (PS)
Figure 3.7-8 Processor Status (PS) Configuration
●
Interrupt level mask register (ILM)
This register indicates the level of the interrupt currently accepted by the CPU. The value is compared with
the value of the interrupt level setting bits (ICR: IL0 to IL2) in the interrupt control register set for the
peripheral resource interrupt request.
●
Register bank pointer (RP)
This pointer points to the first address of the memory block (register bank) used as the general-purpose
register in the RAM area.
There are 32 banks for general-purpose registers. Values 0 to 31 are set in the RP to specify a bank.
●
Condition code register (CCR)
This register consists of flags that are set to "1" or reset to "0" by instruction execution results and by
interrupts.
PS
ILM
RP
CCR
15
13 12
8 7
0
Default value
⇒
000
00000
-01xxxxx
- : Not used
–
I
S
T
N
Z
V
C
7
6
5
4
3
2
1
0
: CCR
Default value
⇒
–
0
1
x
x
x
x
x
x : Undefined
B4 B3 B2 B1 B0
: RP
0
0
0
0
0
Default value
⇒
ILM2
ILM1
ILM0
: ILM
0
0
0
Default value
⇒
bit
bit
bit
8
9
10
11
12
13
14
15
bit
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
Страница 3: ......
Страница 5: ......
Страница 9: ...iv ...
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 ...
Страница 739: ......