vdp2_malloc.h File Reference

VDP2 memory allocation (cell, map, rotation, scroll, etc) More...

Go to the source code of this file.

Macros
#define	JO_VDP2_KTABLE_SIZE
#define	JO_VDP2_ROTATION_TABLE_SIZE
#define	JO_VDP2_MAP_SIZE
#define	JO_VDP2_CELL_TO_MAP_OFFSET(CELL_PTR)

Enumerations
enum	jo_vdp2_ram_usage {   JO_VDP2_RAM_USER, JO_VDP2_RAM_MAP_NBG0, JO_VDP2_RAM_MAP_NBG1, JO_VDP2_RAM_MAP_NBG2,   JO_VDP2_RAM_MAP_NBG3, JO_VDP2_RAM_MAP_RBG0, JO_VDP2_RAM_KTABLE, JO_VDP2_RAM_RTABLE,   JO_VDP2_RAM_CELL_NBG0, JO_VDP2_RAM_CELL_NBG1, JO_VDP2_RAM_CELL_NBG2, JO_VDP2_RAM_CELL_NBG3,   JO_VDP2_RAM_CELL_RBG0, JO_VDP2_RAM_BACK_COLOR, JO_VDP2_RAM_LINE_SCROLL, JO_VDP2_RAM_BITMAP_NBG0,   JO_VDP2_RAM_BITMAP_NBG1, JO_VDP2_RAM_COLOR, JO_VDP2_LINE_COLOR_TABLE }

Functions
void *	jo_vdp2_malloc (const jo_vdp2_ram_usage usage, const unsigned int n)
	Dynamic VDP2 memory allocator. More...
static __jo_force_inline void *	jo_vdp2_malloc_autosize (const jo_vdp2_ram_usage usage)
	Dynamic VDP2 memory allocator for known size usage (JO_VDP2_RAM_RTABLE, JO_VDP2_RAM_KTABLE, JO_VDP2_RAM_COLOR) More...
void	jo_vdp2_free (const void *const p)
	function frees VDP2 memory space pointed to by p More...

Detailed Description

VDP2 memory allocation (cell, map, rotation, scroll, etc)

Author

Johannes Fetz

Bug:

No known bugs.

Macro Definition Documentation

JO_VDP2_CELL_TO_MAP_OFFSET

#define JO_VDP2_CELL_TO_MAP_OFFSET

(

CELL_PTR

)

JO_VDP2_KTABLE_SIZE

#define JO_VDP2_KTABLE_SIZE

JO_VDP2_MAP_SIZE

#define JO_VDP2_MAP_SIZE

JO_VDP2_ROTATION_TABLE_SIZE

#define JO_VDP2_ROTATION_TABLE_SIZE

Enumeration Type Documentation

jo_vdp2_ram_usage

enum jo_vdp2_ram_usage

Enumerator
JO_VDP2_RAM_USER	For user.
JO_VDP2_RAM_MAP_NBG0	MAP (for sl1MapRA, slMapNbg1, etc)
JO_VDP2_RAM_MAP_NBG1
JO_VDP2_RAM_MAP_NBG2
JO_VDP2_RAM_MAP_NBG3
JO_VDP2_RAM_MAP_RBG0
JO_VDP2_RAM_KTABLE	KTABLE (for slMakeKtable)
JO_VDP2_RAM_RTABLE	Rotation table (for slRparaInitSet)
JO_VDP2_RAM_CELL_NBG0	CELL (for slPageRbg0, slPageNbg1, etc)
JO_VDP2_RAM_CELL_NBG1
JO_VDP2_RAM_CELL_NBG2
JO_VDP2_RAM_CELL_NBG3
JO_VDP2_RAM_CELL_RBG0
JO_VDP2_RAM_BACK_COLOR	Back color (for slBack1ColSet)
JO_VDP2_RAM_LINE_SCROLL	Line Scroll table (for slLineScrollTable0 and slLineScrollTable1)
JO_VDP2_RAM_BITMAP_NBG0	CELL (for slBitMapNbg0, slBitMapNbg1, etc)
JO_VDP2_RAM_BITMAP_NBG1
JO_VDP2_RAM_COLOR	Color RAM for Palette, etc.
JO_VDP2_LINE_COLOR_TABLE	Line color table (for slLineColTable)

Function Documentation

jo_vdp2_free()

void jo_vdp2_free

(

const void *const

p

)

function frees VDP2 memory space pointed to by p

Parameters

p	pointer that must have been returned by a previous call to jo_vdp2_malloc()

jo_vdp2_malloc()

void* jo_vdp2_malloc	(	const jo_vdp2_ram_usage	usage,
		const unsigned int	n
	)

Dynamic VDP2 memory allocator.

Parameters

usage	VDP2 memory segment usage
n	Segment size

Returns

a pointer to the allocated memory or NULL if failed

jo_vdp2_malloc_autosize()

static __jo_force_inline void* jo_vdp2_malloc_autosize ( const jo_vdp2_ram_usage  usage )

static

Dynamic VDP2 memory allocator for known size usage (JO_VDP2_RAM_RTABLE, JO_VDP2_RAM_KTABLE, JO_VDP2_RAM_COLOR)

Parameters

usage

VDP2 memory segment usage

Returns

a pointer to the allocated memory or NULL if failed