core, fix interlace in arm assembly

diff --git a/pico/draw_arm.S b/pico/draw_arm.S
index d3f456e..73ee07f 100644 (file)
--- a/pico/draw_arm.S
+++ b/pico/draw_arm.S
@@ -836,7 +836,9 @@ DrawLayer:
 \r
     mov     r0, sp\r
     mov     r1, r9, lsr #29\r
-    bl      DrawStripInterlace @ struct TileStrip *ts, int plane_sh\r
+    mov     r2, r9, lsr #8\r
+    and     r2, r2, #0xff\r
+    bl      DrawStripInterlace @ struct TileStrip *ts, int plane_sh, int cellskip\r
 \r
     add     sp, sp, #6*4\r
     ldmfd   sp!, {r4-r11,pc}\r