vdp.h

/* $Id$ */

#ifndef __gen_vdp_h
#define __gen_vdp_h

#include "gen-emu.h"

struct vdp_s
{
	uint8_t vram[65536];
	uint16_t cram[64];
	uint16_t vsram[64];		/* Only first 40 used. rest are address padding. */
	uint16_t dc_cram[64];	/* cram in dc format */
	uint8_t regs[32];		/* Only first 24 used, rest are address padding. */

	uint32_t control;
	uint16_t *bga;
	uint16_t *bgb;
	uint16_t *wnd;
	uint64_t *sat;

	uint16_t status;
	uint16_t scanline;
	uint16_t hv;

	uint16_t hs_off;
	uint16_t addr;
	uint8_t code;
	uint8_t h_int_counter;
	uint8_t write_pending;
	uint8_t sc_width;
	uint8_t sc_height;
	uint8_t dis_cells;
};


uint16_t vdp_control_read(void);
uint16_t vdp_data_read(void);
void vdp_control_write(uint16_t);
void vdp_data_write(uint16_t);
void vdp_interrupt(int line);
uint16_t vdp_hv_read(void);
void vdp_init(void);
void vdp_render_cram(void);
void vdp_render_scanline(int);

#endif // __gen_vdp_h