model.h File Reference

#include <gbdk/platform.h>
#include <stdint.h>

Go to the source code of this file.

Macros
#define	MEGADUCK_HANDHELD_STANDARD   0u
#define	MEGADUCK_LAPTOP_SPANISH   1u
#define	MEGADUCK_LAPTOP_GERMAN   2u

Functions
uint8_t	duck_check_model (void)

Macro Definition Documentation

MEGADUCK_HANDHELD_STANDARD

#define MEGADUCK_HANDHELD_STANDARD   0u

MEGADUCK_LAPTOP_SPANISH

#define MEGADUCK_LAPTOP_SPANISH   1u

MEGADUCK_LAPTOP_GERMAN

#define MEGADUCK_LAPTOP_GERMAN   2u

Function Documentation

duck_check_model()

uint8_t duck_check_model

(

void

)

Returns which MegaDuck Model the program is being run on

Possible models are:

• Handheld: MEGADUCK_HANDHELD_STANDARD
• Spanish Laptop "Super QuiQue": MEGADUCK_LAPTOP_SPANISH
• German Laptop "Super Junior Computer": MEGADUCK_LAPTOP_GERMAN

This detection should be called immediately at the start of the program for most reliable results, since it relies on inspecting uncleared VRAM contents.

It works by checking for distinct font VRAM Tile Patterns (which aren't cleared before cart program launch) between the Spanish and German Laptop models which have slightly different character sets.

So VRAM must not be cleared or modified at program startup until after this function is called (not by the crt0.s, not by the program itself).

Note

This detection may not work in emulators which don't simulate the preloaded Laptop System ROM font tiles in VRAM.