🚀 go-pugleaf

This is more like it, folks, for checking whether a data structure
is in Chip RAM or not.  Sorry for giving you such bad code, Glenn,
but it was off the top of my head, on a machine without a compiler.
So, anyway, folks, stop linking with that option that puts the
entire data segment in Chip RAM; waste a byte or two and do
something like this.

#include "stdio.h"
#include "functions.h"
#include "exec/memory.h"
#include "intuition/intuition.h"
long TypeOfMem() ; /* why isn't this in functions.h? */
struct Image foo ;
struct Image *usefoo ;
void cleanup() { /* how to clean up after */
   if (usefoo != &foo)
      FreeMem(usefoo, (long)sizeof(struct Image)) ;
}
void error(s) /* how to die */
char *s ;
{
   printf("%s!\n", s) ;
   cleanup() ;
}
void *checkchip(data, len) /* this is the important function */
void *data ;
int len ;
{
   void *ptr ;

   if (TypeOfMem(data) & MEMF_CHIP)
      return(data) ;
   ptr = AllocMem((long)len, MEMF_CHIP) ;
   if (ptr == NULL)
      error("! out of core") ;
   CopyMem(data, ptr, (long)len) ;
   return(ptr) ;
}
void initialize() { /* how to use, might also check for 1.2 */
   usefoo = (struct Image *)checkchip(&foo, sizeof(struct Image)) ;
}
void main() {
   initialize() ;
   cleanup() ;
}

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