Jim writes:
...
> The SHORT MAPPED file space used by the process exceeds the maximum allowed
> per process.  (FILE OPEN ERROR -490)
...
> The program has little else in it, so I can't see what else would be using
> up the 6MB of space.  I suspect I'm omitting something obvious.  Any ideas?
 
Although he appears to have solved his problem, in a later post, he
mentioned that he is now creating a 6MB short mapped file.
 
Unfortunately, MPE still has the following limits:
 
   - maximum size of single short mapped file: $400000 bytes (4194304)
     (the constant: MAX_SHORT_MAPPED_FILE_SIZE)
 
   - maximum amount of short mapped file space a single process
     can have open at once: 6 MB.  (Can't find name of constant, sorry)
 
BTW, these values haven't changed since Beyond RISC! was published,
and can be found on page 145.
 
I just did some testing and confirmed that the 4 MB, 6MB limits still exist.
 
SS