git.sur5r.net Git - cc65/blob - libsrc/atari/dioread.s

   1 ;
   2 ; Christian Groessler, October 2000
   3 ;
   4 ; this file provides the _dio_read function
   5 ;
   6 ; unsigned char __fastcall__ dio_read(dhandle_t handle,unsigned sect_num,void *buffer);
   7 ; dhandle_t - 16bit (ptr)
   8 ;
   9
  10         .import         __sio_call,pushax
  11         .export         _dio_read
  12         .include        "atari.inc"
  13
  14 .proc   _dio_read
  15
  16         jsr     pushax          ; push buffer address
  17         ldx     #%01000000      ; direction value
  18         lda     #SIO_READ       ; read sector command
  19         jmp     __sio_call      ; do the call and return to the user
  20
  21 .endproc
  22