On Fri, 3 Dec 1999, David Ledbury wrote: > > How about using overlays? Or DSO? Ie. have parts of the code as modules a= > > nd > > use the remaining 300 bytes as a module swapper? THe modules could reside > > anywhere in memory. > > I basically suggested this facility to this with Edwin originally. > > I understand there is a system record which has been reserved for that sort > of purpose? or the posibility for one? basically to load additional sections > ad-hock....
The technical manual describes a mechanism for allocating space in small chunks, but I don't think the ROM provides any direct support for it, and I don't know of many programs which use it properly. The major problem with it is that you have to write your code to be entirely relocatable - not impossible, but quite a major pain (and likely to produce slower code). Andrew -- -- Andrew Collier ([EMAIL PROTECTED]) -- My other -- http://mnemotech.ucam.org -- .sig is a -- Part 3 Materials Science, Cambridge -- PDF file --
