Syscalls

Syscall	Parameters	Returns	Summary
Syscall:0			Copies all of VRAM to the LCD.
Syscall:1	int x, int y, int w, int h		Copies a rectangular region of VRAM to the LCD.
Syscall:2	int x, int y, int w, int h, byte ?		Draws a line.
Syscall:3	int x, int y, int w, int h		Draws a line.
Syscall:4	int x, int y, int w, int h		Draws a line.
Syscall:5	int x, int y, int w, int h		Draws a line.
Syscall:6	int x1, int y1, int x2, int y2, byte ?		Draws a line.
Syscall:7			Clears VRAM.
Syscall:8	int x, int y, int w, int h		Inverts a rectangular region of VRAM.
Syscall:9	int x, int y, int w, int h		Fades a rectangular region of VRAM.
Syscall:A	int x, int y, int w, int h		Clears a rectangular region of VRAM.
Syscall:B	int x, int y, int w, int h, byte *dest		Copies a region of VRAM to main memory.
Syscall:C	int x, int y, int w, int h, byte border		Inverts a rectangular region of the screen then clears an inner portion.
Syscall:D	int x, int y, image *img		Draws an image at a specified (x, y) coordinate to VRAM.
Syscall:E	int x, int y, image *img, int mode		Draws an image at a specified (x, y) coordinate to VRAM with special operations.
Syscall:F	int x, int y, image *img		Draws a faded image at a specified (x, y) coordinate to VRAM.
Syscall:10	int x, int y, int w, int h	int success	Preserves then clears a rectangular region of VRAM.
Syscall:11			Restores the previously-preserved rectangular region of VRAM.
Syscall:12	int delay		Delays for a short while.
Syscall:13	void (*)() callback		Registers a callback function to run when switching out of the add-on.
Syscall:14	char *path, char *?		Gets the current application's path.
Syscall:15	char *id, char *?		Gets the current application's ID.
Syscall:1A	int x, int y, font *c	int w	Prints a single character to VRAM.
Syscall:1B	int x, int y, char *s, font *f	int w	Prints a string to VRAM.
Syscall:1C	int *w, int *h, font *c	int error	Measures a single character.
Syscall:1D	int x, int y, image *img, int mode, int background		Draws an image at a specified (x, y) coordinate to VRAM with plotting mode and background options.
Syscall:1E	int icon, int mode		Draws a system icon to VRAM.
Syscall:1F	int icon		Clears a system icon from VRAM.
Syscall:20	int x, int y, int icon, int mode		Draws a system icon at a specified (x, y) coordinate to VRAM.
Syscall:21	int icon		Copies a system icon's region of VRAM to the LCD.
Syscall:22	int icon, int x, int y		Copies a system icon's region of VRAM to the LCD at a specified (x, y) coordinate.
Syscall:23	int x, int y, int w, int h, int amount		Scrolls a rectangular region of VRAM vertically.
Syscall:24	int x, int y, int length		Draws a dotted horizontal line to VRAM.
Syscall:4F	int x, int y, int index, int mode, image_xy **imgs		Draws an image from an image list to VRAM at a specified (x, y) coordinate.
Syscall:50	int x, int y, int index, image_xy **imgs		Clears an image in an image list from VRAM at a specified (x, y) coordinate.
Syscall:51	int x, int y, int index, image_xy **imgs		Copies an image in an image list from VRAM to the LCD at a specified (x, y) coordinate.
Syscall:52	int index, int mode, image_xy **imgs		Draws an image from an image list to VRAM.
Syscall:53	int index, image_xy **imgs		Clears an image in an image list from VRAM.
Syscall:54	int index, image_xy **imgs		Copies an image in an image list from VRAM to the LCD.
Syscall:55	int list	image_xy **imgs	Returns one of the system image lists.
Syscall:56	int alert, int mode		Displays a system alert message.
Syscall:66	char *a, char *b	int index	Compares two strings and returns the index of the first different character.
Syscall:67	char *str	int length	Returns the length of a string in bytes.
Syscall:68	char *a, char *b	int difference	Compares two strings and returns 0 if they are the same, -1 if a<b or +1 if a>b.
Syscall:69	char *a, char *b	int difference	Compares string a and the reversed version of string b.