don't use constructor to setup runtime stack

[cc65] / libsrc / apple2 / _scrsize.s

diff --git a/libsrc/apple2/_scrsize.s b/libsrc/apple2/_scrsize.s
index 5578c1be15c7366f522cfd70399eef0814e82646..62988ae16e8c47d29ff6c75a7ce5804c1ae170f8 100644 (file)
--- a/libsrc/apple2/_scrsize.s
+++ b/libsrc/apple2/_scrsize.s
@@ -4,12 +4,14 @@
 ; Screen size variables
 ;
 
-       .export         xsize, ysize
-
-.rodata
-
-xsize:         .byte   40
-ysize: .byte   24
-
+        .export                screensize
 
+        .include        "apple2.inc"
 
+screensize:
+        ldx    WNDWDTH
+        lda    WNDBTM
+        sec
+        sbc    WNDTOP
+        tay
+        rts