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diff --git a/pico/pico.h b/pico/pico.h
index 8b7d032..2398ad1 100644
--- a/pico/pico.h
+++ b/pico/pico.h
@@ -34,6 +34,9 @@ extern void cache_flush_d_inval_i(const void *start_addr, const void *end_addr);
 // this one should handle display mode changes
 extern void emu_video_mode_change(int start_line, int line_count, int is_32cols);
 
+// this must switch to 32bpp mode
+extern void emu_32x_startup(void);
+
 // Pico.c
 #define POPT_EN_FM          (1<< 0) // 00 000x
 #define POPT_EN_PSG         (1<< 1)
@@ -166,6 +169,7 @@ extern int PicoDrawMask;
 #define PDRAW_LAYERA_ON      (1<<3)
 #define PDRAW_SPRITES_LOW_ON (1<<4)
 #define PDRAW_SPRITES_HI_ON  (1<<7)
+#define PDRAW_32X_ON         (1<<8)
 // internals
 #define PDRAW_SPRITES_MOVED (1<<0) // (asm)
 #define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority