erics@dartvax.UUCP (Eric Schlegel) (10/01/87)
Does anyone know the exact state of the meg limit on Excel? I recall hearing that Microsoft used 20-bit addresses in their p-code, and thus Excel can't address more than a meg. Would this apply to just the location of the code, or does it mean that Excel couldn't use memory over a meg for data either? This question is about to become very important with MultiFinder. The latest issue of MacWEEK states that Excel will only work under MF if it is loaded first, presumably so that the code will fall in the first meg. Eric -------- Eric Schlegel erics@u2.dartmouth.edu BITNET erics@dartvax UUCP #include <std_disclaimer.h> #include <quote.h>
loucks@intvax.UUCP (Cliff Loucks) (10/06/87)
in article <7272@dartvax.UUCP>, erics@dartvax.UUCP (Eric Schlegel) says: > Does anyone know the exact state of the meg limit on Excel? Someone just the other day said this limitation has been removed. > The latest issue of MacWEEK states that Excel will only work under > MF if it is loaded first, presumably so that the code will fall in > the first meg. I just loaded and ran Excel in Juggler with Versaterm and Moire loaded first. I don't have any huge files, but it runs fine for me. -- Cliff Loucks [gatech | ucbvax]!unmvax!sandia!intvax!loucks Sandia National Labs, Albuquerque, New Mexico Poor New Mexico; So far from Heaven, and so close to Texas.
lsr@apple.UUCP (Larry Rosenstein) (10/12/87)
In article <341@intvax.UUCP> loucks@intvax.UUCP (Cliff Loucks) writes: >in article <7272@dartvax.UUCP>, erics@dartvax.UUCP (Eric Schlegel) says: > >> The latest issue of MacWEEK states that Excel will only work under >> MF if it is loaded first, presumably so that the code will fall in >> the first meg. > >I just loaded and ran Excel in Juggler with Versaterm and Moire >loaded first. I don't have any huge files, but it runs fine >for me. The reason it works is that Multifinder allocates memory for applications starting with the top of memory and working its way down. This makes it possible for the system heap (which is at the low end of memory) to expand as needed. I believe that Excel requires that it be loaded low in memory, and that Multifinder contains code to accommodate this need. Since most application are loaded high, the low end of memory will usually be free, regardless of the order in which application are run. -- Larry Rosenstein Object Specialist Apple Computer AppleLink: Rosenstein1 UUCP: {sun, voder, nsc, mtxinu, dual}!apple!lsr CSNET: lsr@Apple.com