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) Greetings, Frieder (*) see #elif defined DSDCC_MODEL_MEDIUM in http://sdcc.svn.sourceforge.net/viewvc/sdcc/trunk/sdcc/device/lib/_gptrget.c if you need more detail ------------------------------------------------------------------------------ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
