cc65/libsrc/atari/diowrite.s

;
; Christian Groessler, October 2000
;
; this file provides the _dio_write function
;
; unsigned char __fastcall__ dio_write(dhandle_t handle,unsigned sect_num,const void *buffer);
; dhandle_t - 16bit (ptr)
;

        .import         __sio_call,pushax
        .export         _dio_write
        .include        "atari.inc"

.proc   _dio_write

        jsr     pushax          ; push buffer address
        ldx     #%10000000      ; indicate i/o direction (write)
        lda     #SIO_WRITE      ; write sector command
        jmp     __sio_call      ; do the call and return to the user

.endproc