From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2002-04-17 13:06:15
On Wed, Apr 17, 2002 at 01:09:23PM +0300, Marko Mäkelä wrote:
> I suspect that there are similar incompatibility issues with other memory
> expansions. But it would be nice at least to have a library that allows
> all expansions to be accessed in a similar way. Then it wouldn't be so
> difficult to make programs support a wide range of expansions, one at a
> time.
This brings up an idea: Now that o65 support in the linker is complete and
tested to some degree, it would also be possible to add a framework for
loadable modules for cc65 generated programs. The o65 format is designed so
that the loader/relocator is rather small. Adding such a loader would mean
that programs can load support routines for memory management at runtime
depending on the hardware found in the system. Such a runtime loader/overlay
system would be helpful in several other cases, for example to load hardware
specific mouse or graphic routines.
The only unfortunate thing is that I usually have a lot more ideas than I can
handle:-) I'm still working on the simulator thing we discussed lately, and it
will need a lot more work to become usable.
Maciej, can you tell me how big the o65 loader is, you wrote for Lunix? For
the sake of portability, I would suggest to use the standard C file routines
for the actual loading, so having a number without the file I/O stuff would be
great.
Regards
Uz
--
Ullrich von Bassewitz uz_at_musoftware.de
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