Hi James,

I have never seen, that any 8051 bootloader was written in C. Since there are too many tricks inside.

E.g. often routines assembled on one location but running on another location (downloaded into a piece of RAM). So this code must be made relocatable at run time and calling must be redirected to the run time addresses.
And many other tricks used, which also impossible to be done in C.

In general, if you have no idea, how a piece of code works, let it unchanged and use it as is.


Peter