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RTX51 Tiny User's Guide
Overview 
What's New Problems Solved Product Specifications Tool Requirements Target Requirements Interrupts Reentrant Functions C Library Routines Multiple Data Pointers Arithmetic Units Register Banks 
Real-Time Programs Theory of Operation Configuring RTX51 Tiny Using RTX51 Tiny Examples Function ReferenceArithmetic Units
The Keil C51 Compiler allows you to use the arithmetic units of various 8051 derivatives. RTX51 Tiny, however, provides no management for them. Therefore, you must be careful if you use the arithmetic unit in your RTX51 Tiny application.
Essentially, you must ensure that a round-robin task switch does not take place during execution of code that uses the arithmetic unit.
Note
- You should disable Round-Robin Task Switching if you wish to use an arithmetic unit.
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