nuclear@4: #ifndef VDP_H_
nuclear@4: #define VDP_H_
nuclear@4: 
nuclear@4: #include <stdint.h>
nuclear@4: 
nuclear@4: #define VDP_PORT_DATA		(*(volatile uint16_t*)0xc00000)
nuclear@4: #define VDP_PORT_DATA32		(*(volatile uint32_t*)0xc00000)
nuclear@4: #define VDP_PORT_CTL		(*(volatile uint16_t*)0xc00004)
nuclear@4: #define VDP_PORT_CTL32		(*(volatile uint32_t*)0xc00004)
nuclear@4: #define VDP_PORT_HVCOUNT	(*(volatile uint16_t*)0xc00008)
nuclear@4: #define VDP_PORT_PSG		(*(volatile uint16_t*)0xc00010)
nuclear@4: 
nuclear@4: /* control register read flags */
nuclear@4: #define VDP_CTL_PAL_BIT			0x0001
nuclear@4: #define VDP_CTL_HBLANK_BIT		0x0002
nuclear@4: #define VDP_CTL_VBLANK_BIT		0x0004
nuclear@4: #define VDP_CTL_DT3_BIT			0x0008
nuclear@4: #define VDP_CTL_ODD_FRAME_BIT	0x0010
nuclear@4: #define VDP_CTL_COLIDE_BIT		0x0020
nuclear@4: #define VDP_CTL_SPRITE_OVF_BIT	0x0040
nuclear@4: #define VDP_CTL_FRAME_BIT		0x0080
nuclear@4: #define VDP_CTL_FIFO_FULL_BIT	0x0100
nuclear@4: #define VDP_CTL_FIFO_EMPTY_BIT	0x0200
nuclear@4: 
nuclear@4: /* control register write flags (RSET) */
nuclear@4: #define VDP_CTL_REGSEL_MASK		0x1f00
nuclear@4: #define VDP_CTL_DATA_MASK		0x00ff
nuclear@4: 
nuclear@4: #define VDP_RSET(reg, val)	\
nuclear@4: 	(0x8000 | (VDP_CTL_REGSEL_MASK & ((uint16_t)(reg) << 8)) | \
nuclear@4: 	 (VDP_CTL_DATA_MASK & (uint16_t)(val)))
nuclear@4: 
nuclear@4: #define VDP_MODE_WR_BIT		1
nuclear@4: 
nuclear@4: #define VDP_VRAM_WR		1
nuclear@4: #define VDP_CRAM_WR		3
nuclear@4: 
nuclear@4: #define VDP_ADDRSET(addr, mode) /* TODO */
nuclear@4: 
nuclear@4: 
nuclear@4: #endif	/* VDP_H_ */