AVR000: Register and Bit-Name Definitionsfor the AVR MicrocontrollersIntroductionThis application note contains files whichallows the user to use Register and Bitnames from the databook when writingassembly programs. To use the files,simply include them in the top of thesource code. The files are namedaccording to the following convention:def.incAs an example, AT90S8515 programsshould include the following assemblerdirective:.include "8515def.inc"In addition, the pointer registers R26 -R31 have been assigned names accord-ing to the following table:Note: For the AT90S1200 or similar, the only defined pointer is R30 - ZL.For controllers with SRAM, the constant“RAMEND” is defined. For all devices,the constants “FLASHEND” and“EEPROMEND” are defined. This num-ber is useful when initializing the Stackpointer to point at the highest internalSRAM address. Finally, the interruptaddresses have been defined, and canbe used together with the “.org” directivein the assembler to position an inter...