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PK51: Which Compiler-Options for big projects with DS80C410?

Hello Forum,

actually I have the following Problem:
Target: Dallas DS80C410
MemoryModel: Large
Code: Contiguous Mode 512k
Non RTX-Tiny, only Dallas-CLibs and HW-Task-Sheduler in usage.
Toolchain PK51 Version8 µVivion V3.33 (a bit old, but stalbe until now)

During compilation I had in one module the effect that the Compiler as well as the Assembler
din't caused an error. But the Linker throws an L220-Error. While going through the Code and Project Settings I tried by changing in the C51-Settings-Options the Emphasis from Speed to size. The result was no Compilation/Linking error as well as running code.

Can somebody give me a hint what happened here - I asume a size problem in the specific sourcefile. How can I in this case decide if there's any limit (code, const, etc.)reached?

The other question I have:
Does anybody also used this device and can share me with internals of the sheduler and libs?
Maxim seems to phase out this device and can't Support it anymore...

Thanks for any idea or hint.

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