ARM Technical Support Knowledge Articles

DALLAS 390 HANGS ON MATH OPERATIONS

Applies to: C51 C Compiler

Answer


Information in this article applies to:


QUESTION

The Dallas 390 hangs when I try to use multiply, divide or shift operations. What's wrong?

ANSWER

You may have the On-Chip Arithmetic Accelerator enabled and are calling math functions from an interrupt routine. Math operations using the Dallas 390 math accelerator are not reentrant.

SEE ALSO

Article last edited on: 2005-10-06 16:54:39

Rate this article

[Bad]
|
|
[Good]
Disagree? Move your mouse over the bar and click

Did you find this article helpful? Yes No

How can we improve this article?

Link to this article
Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential