Hi Dan, Andreas, et.al.

In my attempts at porting Squeak to BeOS I've run into a problem/issue 
that you may be able to shed some light on.  During the course of my 
initial attempts to read in the Squeak image into the interpreter, I got a 
PPC exception.  Looking into it I've discovered that the initial malloc 
was succeeding but the conversion of the unsigned char* to int was failing due 
to BeOS's using 32bit addresses, with application memory starting 
at 0x80000000...the type conversion was failing with a negative value, 
which messed up all the succeeding memory calculations.

Relevant code:
	unsigned char *memory;
	int memStart;
	int desiredHeapSize;
	memory = (unsigned char *) malloc(desiredHeapSize);	
	memStart =  (int) memory;


memStart would be negative.  My question(s) are:
1) Shouldn't the typecast be uint?  Memory addresses should never be negative.
2) Under BeOS I'll probably have to use:
uint32 memStart = (uint32) memory;
What else will this affect off the top of your head(s) so I don't have 
to debug line by line ;-)
3) I'm assuming the Smalltalk->c conversion code needs to take into account 
32 bit addresses.  Any hints on what I need to change?  And if I change 
this, this will break the portability issues dealing with the inner interpreter; 
how best should I handle this?  Is this something you should be worried about 
in your versions?

Thanks for any suggestions, hints, and your patience,
Serg




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