On Fri, 02 Jan 2009 14:54:26 +0100 Frieder Ferlemann <frieder.ferlem...@web.de> wrote:
> Hi Mark, > > Maarten Brock schrieb: > > The difference is that medium model puts the variables > > in pdata and large in xdata. Pdata (max. 256 bytes) is > > smaller than xdata (max. 64kB) but can be accessed with > > two pointers (r0,r1) what might result in smaller code > > than xdata which only can use dptr. > > Additionally the generic pointer is squeezed(*) into two bytes for > the medium model. (instead of three bytes for both small and large > model) > > This limits the address range that can be accessed by generic > pointers to: code memory: 0x0000 .. 0x7fff (32k) > xdata memory: 0x0000 .. 0x3fff (16k) Wow, this sounds extremely important to know--this should definitely be put in the SDCC manual. Regards, Colin ------------------------------------------------------------------------------ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
