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Can I exclude some ASM instructions from compiling ?

Can someone tell me is there a possibility for excluding some ASM instruction from C KEIL compiler? (while compiler is converting C files to ASM during compilation, may those instruction be avoided?)

Brana

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  • I strongly suspect that writing ones own routines in assembler would take several years less than getting that to work...

    Stefan, are you sitting down?

    I agree.

    Anyhow to the general subject of this post, this (or VERY similar) has been discussed before. It seems that when a ASIC/CPLD implementer run into trouble with implementing some instruction(s) (s)he post "can the compiler do without".

    The OP could implement the "added functionality" using A5, xx as opcodes for the added stuff and maintain full compatibility with the standard.

    Erik

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  • I strongly suspect that writing ones own routines in assembler would take several years less than getting that to work...

    Stefan, are you sitting down?

    I agree.

    Anyhow to the general subject of this post, this (or VERY similar) has been discussed before. It seems that when a ASIC/CPLD implementer run into trouble with implementing some instruction(s) (s)he post "can the compiler do without".

    The OP could implement the "added functionality" using A5, xx as opcodes for the added stuff and maintain full compatibility with the standard.

    Erik

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