According to Frank Heckenbach:

I think he meant dynamically loading and freeing the code of the object's method, not it's data. AFAIK, one needs to use dynamic linking in order to achieve this, but I don't know much about it.

I didn't refer to data only: Modern DPMI managers swap both code and data to disk if there is not enough physical memory. On such a platform just forget about overlays and such: You always have them automatically. (This holds for Borland Pascal 7.0 in protected mode, too.)

BTW: Do DJGPP and/or EMX do this, too?

Yes. Under DOS, DJGPP and EMX swap memory to disk unless you disable it. When EMX runs under OS/2, the OS does the swapping.

Peter

Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski@uni-essen.de - http://home.pages.de/~peter.gerwinski/ [970201] maintainer GNU Pascal [970714] - http://home.pages.de/~gnu-pascal/ [970125]