initial commit

2026-07-18 20:34:55 +02:00
commit 59ad004c96
474 changed files with 226635 additions and 0 deletions
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+#ifndef CX16_VERA_H
+#define CX16_VERA_H
+
+// Thanks to crisps for providing the initial code for this library
+
+#include <c64/types.h>
+
+#define VERA_ADDRH_DECR		0x08
+#define VERA_ADDRH_INC		0xf0
+
+#define VERA_CTRL_RESET		0x80
+#define VERA_CTRL_DCSEL		0x02
+#define VERA_CTRL_ADDRSEL	0x01
+
+#define VERA_IRQ_LINE_8		0x80
+#define VERA_IRQ_AFLOW		0x08
+#define VERA_IRQ_SPRCOL		0x04
+#define VERA_IRQ_LINE		0x02
+#define VERA_IRQ_VSYNC		0x01
+
+#define VERA_DCVIDEO_MODE_OFF		0x00
+#define VERA_DCVIDEO_MODE_VGA		0x01
+#define VERA_DCVIDEO_MODE_NTSC		0x02
+#define VERA_DCVIDEO_MODE_RGBI		0x03
+
+#define VERA_DCVIDEO_NCHROMA		0x04
+#define VERA_DCVIDEO_LAYER0			0x10
+#define VERA_DCVIDEO_LAYER1			0x20
+#define VERA_DCVIDEO_SPRITES		0x40
+
+#define VERA_LAYER_DEPTH_1		0x00
+#define VERA_LAYER_DEPTH_2		0x01
+#define VERA_LAYER_DEPTH_4		0x02
+#define VERA_LAYER_DEPTH_8		0x03
+
+#define VERA_LAYER_BITMAP		0x04
+#define VERA_LAYER_T256C		0x08
+#define VERA_LAYER_WIDTH_32		0x00
+#define VERA_LAYER_WIDTH_64		0x10
+#define VERA_LAYER_WIDTH_128	0x20
+#define VERA_LAYER_WIDTH_256	0x30
+#define VERA_LAYER_HEIGHT_32	0x00
+#define VERA_LAYER_HEIGHT_64	0x40
+#define VERA_LAYER_HEIGHT_128	0x80
+#define VERA_LAYER_HEIGHT_256	0xc0
+
+#define VERA_TILE_WIDTH_8		0x00
+#define VERA_TILE_WIDTH_16		0x01
+#define VERA_TILE_HEIGHT_8		0x00
+#define VERA_TILE_HEIGHT_16		0x02
+
+
+struct VERA
+{
+	volatile word	addr;
+	volatile byte	addrh;
+	volatile byte	data0, data1;
+
+	volatile byte	ctrl;
+	volatile byte	ien;
+	volatile byte	isr;
+	volatile byte	irqline;
+
+	volatile byte	dcvideo;
+	volatile byte	dchscale;
+	volatile byte	dcvscale;
+	volatile byte	dcborder;
+
+	volatile byte	l0config;
+	volatile byte	l0mapbase;
+	volatile byte	l0tilebase;
+	volatile word	l0hscroll;
+	volatile word	l0vscroll;
+
+	volatile byte	l1config;
+	volatile byte	l1mapbase;
+	volatile byte	l1tilebase;
+	volatile word	l1hscroll;
+	volatile word	l1vscroll;
+
+	volatile byte	audioctrl;
+	volatile byte	audiorate;
+	volatile byte	audiodata;
+
+	volatile byte	spidata;
+	volatile byte	spictrl;
+};
+
+enum VERASpriteMode
+{
+	VSPRMODE_4,
+	VSPRMODE_8
+};
+
+enum VERASpriteSize
+{
+	VSPRSZIZE_8,
+	VSPRSZIZE_16,
+	VSPRSZIZE_32,
+	VSPRSZIZE_64
+};
+
+enum VERASpritePriority
+{
+	VSPRPRI_OFF,
+	VSPRPRI_BACK,
+	VSPRPRI_MIDDLE,
+	VSPRPRI_FRONT
+};
+
+#define VERA_COLOR(r, g, b) (((unsigned)(r) << 8) | ((unsigned)(g) << 4) | (unsigned)(b))
+
+#define vera    (*(VERA *)0x9f20)
+
+inline void vram_addr(unsigned long addr);
+
+inline void vram_addr0(unsigned long addr);
+
+inline void vram_addr2(unsigned long addr);
+
+inline void vram_put(char data);
+
+inline void vram_putw(unsigned data);
+
+inline char vram_get(void);
+
+inline unsigned vram_getw(void);
+
+inline void vram_put_at(unsigned long addr, char data);
+
+inline char vram_get_at(unsigned long addr);
+
+void vram_putn(unsigned long addr, const char * data, unsigned size);
+
+void vram_getn(unsigned long addr, char * data, unsigned size);
+
+void vram_fill(unsigned long addr, char data, unsigned size);
+
+void vera_spr_set(char spr, unsigned addr32, VERASpriteMode mode8, VERASpriteSize w, VERASpriteSize h, VERASpritePriority z, char pal);
+
+void vera_spr_flip(char spr, bool fliph, bool flipv);
+
+void vera_spr_move(char spr, int x, int y);
+
+void vera_spr_image(char spr, unsigned addr32);
+
+void vera_pal_put(char index, unsigned color);
+
+unsigned vera_pal_get(char index);
+
+void vera_pal_putn(char index, const unsigned * color, unsigned size);
+
+void vera_pal_getn(char index, unsigned * color, unsigned size);
+
+#pragma compile("vera.c")
+
+#endif