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cc65/libsrc/atari/dioread.s

23 lines
573 B
ArmAsm

;
; Christian Groessler, October 2000
;
; this file provides the _dio_read function
;
; unsigned char __fastcall__ dio_read(dhandle_t handle,unsigned sect_num,void *buffer);
; dhandle_t - 16bit (ptr)
;
.import __sio_call,pushax
.export _dio_read
.include "atari.inc"
.proc _dio_read
jsr pushax ; push buffer address
ldx #%01000000 ; direction value
lda #SIO_READ ; read sector command
jmp __sio_call ; do the call and return to the user
.endproc