Results 1 to 10 of 10

Thread: BCM4704 and DSP instructions

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Join Date
    Dec 2008
    Location
    Czech republic, Europe
    Posts
    7

    BCM4704 and DSP instructions

    I try to test the DSP Application Specific Extension (MIPS DSP ASE), which should be included in the BCM4704 chip based on MIPS architecture. This chip is the core of the router WL-500gP.

    I compile my test function with MIPS DSP Built-in Functions by a cross-compiler on my PC with parameters for WL-500gP:

    Code:
    -march="mips32r2" -mtune="mips32r2" -mdsp ...
    The compilation is OK. Then I try to run the compiled program on WL-500g Premium. It starts to run, but when the program comes to the DSP instruction, it stops with this message:

    Code:
    Illegal instruction
    Does anybody know what to do? Shoud I first allow the DSP ASE, e.g. by configuring some register? Or does it mean that the DSP ASE, which is promised by Broadcom to be present, insn't available?
    Last edited by electro.rob; 01-12-2008 at 20:30.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •