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cc65/libsrc/atari/dioread.s
cpg 3f71fcb293 now sets up SIO command and transfer direction; __sio_call now does the
real work


git-svn-id: svn://svn.cc65.org/cc65/trunk@361 b7a2c559-68d2-44c3-8de9-860c34a00d81
2000-10-12 21:00:19 +00:00

24 lines
487 B
ArmAsm

;
; Christian Groessler, October 2000
;
; this file provides the _dio_read function
;
; unsigned char __fastcall__ _dio_read(_driveid_t drive_id, _sectnum_t sect_num, void *buffer);
; _driveid_t - 8bit
; _sectnum_t - 16bit
;
.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