|
||
| Products Download Events Support Videos | ||
Technical Support
On-Line Manuals
Cx51 User's Guide
Cx51 Introduction
Compiling Programs
Environment Settings
Command Prompt
ERRORLEVEL
Output Files
Listing (LST) File
Object (OBJ) File
Preprocessor (I) File
Source (SRC) File
Directives
Directive List
Reference
AREGS
ASM
BROWSE
BSE
CODE
COMPACT
COND
DEBUG
DEFINE
DISABLE
EJECT
ENDASM
ENUMINT
FARWARNING
FIXXC800
FLOATFUZZY
INCDIR
INTERVAL
INTPROMOTE
INTVECTOR
LARGE
LISTINCLUDE
MAXARGS
MDU_F120
MDU_R515
MOD517
MODA2
MODAB2
MODC2
MODDA
MODDP2
MODH2
MODP2
NOAMAKE
NOAREGS
NOCOND
NOEXTEND
NOINTPROMOTE
NOINTVECTOR
NOMDU_F120
NOMDU_R515
NOMOD517
NOMODA2
NOMODAB2
NOMODC2
NOMODDA
NOMODDP2
NOMODH2
NOMODP2
NOOBJECT
NOPREPROCESS
NOPRINT
NOREGPARMS
OBJECT
OBJECTADVANCED
OBJECTEXTEND
OMF2
ONEREGBANK
OPTIMIZE
ORDER
PAGELENGTH
PAGEWIDTH
PREPRINT
PRINT
PSOC
REGFILE
REGISTERBANK
REGPARMS
RESTORE
RET_PSTK
RET_XSTK
ROM
SAVE
SMALL
SRC
STRING
SYMBOLS
TABS
USERCLASS
VARBANKING
WARNINGLEVEL
XCROM
Language Extensions
Preprocessor
Advanced Programming
8051 Derivatives
Error Messages
Library Reference
Appendix
ONEREGBANK Compiler Directive
| Abbreviation | OB |
| Arguments | None. |
| Default | None. |
| µVision | Options — C51 — Misc controls. |
| Description | The C51 Compiler selects registerbank 0 on entry to interrupts that do not specify the using attribute. This is done at the beginning of the interrupt service routine with the MOV PSW,#0 instruction. This ensures that high-priority interrupts that do not use the using attribute can interrupt lower priority interrupts that use a different registerbank. If your application uses only one registerbank for interrupts, you may use the ONEREGBANK directive. This elimitates the MOV PSW,#0 instruction. |
| Example | C51 SAMPLE.C ONEREGBANK #pragma OB |
ProductsDevelopment Tools |
Hardware & Collateral |
Downloads |
Support |
Contact |
 |
||||