Commander X16

So you're using cc65 and want to load a file, whether into system RAM or VERA.

Here's how.

 

cbm_k_setnam("petfont.bin");
cbm_k_setlfs(0,8,0);

//
//   A word about cbm_k_load( destination, address )
//
// The address value of cbm_k_load() gets you 16 bits.  Of course, 
// VERA's addressing space is larger.  So you DO have to properly 
// set the FIRST parameter to cbm_k_load():
//    0 points to X16's RAM.
//    1 points to VERA $00000.
//    2 points to VERA $10000.
//
cbm_k_load(2, 0xf800);   // replace these with your target address...

0 is LOAD, 1 is VERIFY, 2 and 3 are VERA.

Data in the 6502 microprocessor RAM can also be loaded and saved via the following cc65 function calls which are declared in cbm.h:

unsigned int __fastcall__ cbm_load (const char* name, unsigned char device, void* data);

/* Loads file "name", from given device, to given address -- or, to the load

** address of the file if "data" is the null pointer (like load"name",8,1

** in BASIC).

** Returns number of bytes that were loaded if loading was successful;

** otherwise 0, "_oserror" contains an error-code, then (see table above).

*/

unsigned char __fastcall__ cbm_save (const char* name, unsigned char device,

                                     const void* addr, unsigned int size);

/* Saves "size" bytes, starting at "addr", to a file.

** Returns 0 if saving was successful, otherwise an error-code (see table

** above).

*/

Here are some example invocations:

    r=cbm_save("bitminer.dat",8,&minerData,sizeof(minerData));

    bytesLoaded=cbm_load("bitminer.dat",8,&minerDataLoadBuffer);