I have some weird issue with what was to be a dead simple port from a legacy 8052 based project to the 89V - after successfully porting several others, from the same compiler.

There is a subroutine, which, as far as I can tell in the hardware, never executes when it should, yet the same subroutine in a test harness works just fine.

I can't FIND any "known issues" with the processor that might be causing my problems though.

Before I rewrite the whole damned thing for another compiler can anyone give me a sanity check ?

I can't find a simulator that's compatible with what my compiler puts out, apart from the crappy one the writer provided - and the writer appears to have closed down.

Steve