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cc65/libsrc/mouse/mouse_ioctl.s

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;
; Ullrich von Bassewitz, 2003-12-30
;
; unsigned char __fastcall__ mouse_ioctl (unsigned char code, void* data);
; /* Call the driver specific ioctl function. NON PORTABLE! Returns an error
; * code.
; */
;
.import popa
.import ptr1: zp
.include "mouse-kernel.inc"
.proc _mouse_ioctl
sta ptr1
stx ptr1+1 ; Store data into ptr1
jsr popa ; Get code from stack
jmp mouse_ioctl ; Call the driver
.endproc