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[cc65] / libsrc / conio / scrsize.s
1 ;
2 ; Ullrich von Bassewitz, 08.08.1998
3 ;
4 ; void screensize (unsigned char* x, unsigned char* y);
5 ;
6
7         .export         _screensize
8         .export         xsize, ysize
9
10         .import         popax
11         .importzp       ptr1, ptr2
12
13 .proc   _screensize
14
15         sta     ptr1            ; Store the y pointer
16         stx     ptr1+1
17
18         jsr     popax           ; get the x pointer
19         sta     ptr2
20         stx     ptr2+1
21
22         ldy     #0
23         lda     xsize
24         sta     (ptr2),y
25         lda     ysize
26         sta     (ptr1),y
27         rts
28
29 .endproc        
30
31
32 .bss
33
34 xsize:  .res    1
35 ysize:  .res    1
36
37
38