ARM Technical Support Knowledge Articles

UNUSED OPCODES

Applies to: C51 C Compiler

Answer


Information in this article applies to:


QUESTION

I'm currently developing a device based on an 8051 FPGA core. I want to eliminate any unused gates. Are there any opcodes in the 8051 instruction set that your C compiler does not use?

ANSWER

The XCHD instruction is not generated by the compiler at this time.

All remaining instructions may be generated by the compiler.

MORE INFORMATION

Article last edited on: 2005-07-15 10:02:14

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