10. how the local .asm variables (used in asm rouitne shall be handled (e.g. where in ram to place the local variables).
----- PŮVODNÍ ZPRÁVA ----- Od: "pito" <[email protected]> Komu: [email protected] Předmět: HOW TO - Assembler in anmforth Datum: 7.9.2010 - 8:42:46 > Hi Matthias and co., > I'd like to ask how to start working with > assembler in amforth. This > might be of general interest, therefore HOW TO. > The example could be the timer int routine: > : tick_isr _one timer 2@ d+ timer 2! ; > which does "timer = timer + 1" where timer is > double integer. I've > seen usart routines and Lubos' routines in asm, > however generaly the > Q: > > 1. is there any recommended structure or frame for > writing assembler > words > 1a. is there any recomemnded structure or frame > for writing > assembler interrupt handlers > 2. how the data from data stack (or from return > stack) are passed to > assembler > 3. how the data are passed from asm. back to data > stack or return > stack > 4. how the external variables (defined as words) > are accessed from > assembler > 5. how the data stack is duped or droped from > assembler > 6. what shall be poped and pushed in asm. routine > (when entering and > leaving it) > 7. how the asm return stack is handled (imagine we > need nested calls > in asm) > 8. how the ram, eprom can be accessed from asm > 9. how the asm code shall be compiled (? via LP's > asm or via > avrasm.) > > Thanks, Pito > ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Amforth-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/amforth-devel
