code_size>64K with C51 => code_size<=64K with CX51?

Hi all,

We are using the C51 with OPTIMIZE (9, SIZE) and we have a problem the code space.

The question is : if we change to CX51 and use OPTIMIZE (11, SIZE) , do you think we can save some code bytes?
We are using a w925EC625 from WINBOND, 80c51 based standard.

Do you have another idea to reduce the code size ?.

Best Regard and thanks for your help.

Parents
  • I think you only need CX51 for Philips 51MX instruction set - see the products page.

    You need the LX51 Linker to get the higher optimisations in C51.
    The benefit gained by the higher options does seem to depend strongly on the nature of the code - try searching for previous discussions.

    Have you paid attention to the section in the Manual on writing optimum code?

Reply
  • I think you only need CX51 for Philips 51MX instruction set - see the products page.

    You need the LX51 Linker to get the higher optimisations in C51.
    The benefit gained by the higher options does seem to depend strongly on the nature of the code - try searching for previous discussions.

    Have you paid attention to the section in the Manual on writing optimum code?

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