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7
Chapter 1 Overview
1.4 Flag Register (FLG)
Figure 1.4.1 Configuration of flag register (FLG)
IPL
U
I
O
B
S
Z
D
C
b15
b0
Carry flag
Debug flag
Zero flag
Sign flag
Register bank select flag
Overflow flag
Interrupt enable flag
Stack pointer select flag
Reserved area
Processor interrupt priority level
Reserved area
Flag register (FLG)
1.4.10 Bits 12-14: Processor interrupt priority level (IPL)
The processor interrupt priority level (IPL) consists of three bits, allowing you to specify eight processor
interrupt priority levels from level 0 to level 7. If a requested interrupt’s priority level is higher than the
processor interrupt priority level (IPL), this interrupt is enabled.
1.4.11 Bit 15: Reserved area
Содержание R8C/Tiny Series
Страница 50: ...Chapter 3 Functions 3 1 Guide to This Chapter 3 2 Functions...
Страница 151: ...134 Chapter 3 Functions 3 2 Functions Blank for page layout...
Страница 152: ...Chapter 4 Instruction Code Number of Cycles 4 1 Guide to This Chapter 4 2 Instruction Code Number of Cycles...
Страница 278: ...Chapter 6 Calculation Number of Cycles 6 1 Instruction queue buffer...
Страница 287: ...Glossary 1 Glossary Technical terms used in this software manual are explained below They are good in this manual only...
Страница 291: ...Symbol 1 Table of symbols Symbols used in this software manual are explained below They are good in this manual only...
Страница 295: ...REVISION HISTORY R8C Tiny Series SOFTWARE MANUAL Rev Date Description Page Summary B 1 1 00 Jun 19 03 First Edition...
Страница 297: ...R8C Tiny Series Software Manual 2 6 2 Ote machi Chiyoda ku Tokyo 100 0004 Japan...