ARM Technical Support Knowledge Articles

USING MDU_F120 AND MDU_R515 IN UVISION

Applies to: C51 C Compiler

Answer


Information in this article applies to:


SYMPTOM

The MDU_F120 and MDU_R515 directives have been added to the C51 Compiler to support the MAC units of the Cygnal/Silicon Labs C8051F12x devices and Cast/Evatronix R80515 cores. The manual indicates that when these devices are selected from the Device Database that uVision will have a checkbox for Use On—Chip Arithmetic Unit in the Target window in the Project Options dialog. With uVision2 no such checkbox appears.

CAUSE

uVision support for these directives was added in uVision3. No new development is underway on uVision2.

RESOLUTION

You may download the latest updates from the Keil Website. The C51 V7.50 update includes a BETA release of uVision3.

If you continue using uVision2, you may enter these directives under Miscellaneous in the C51 window in the Project Options dialog.

MORE INFORMATION

SEE ALSO

Article last edited on: 2005-09-28 18:21:12

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