[mdlife] / src / hwregs.h

#ifndef HWREGS_H_
#define HWREGS_H_

#define VDP_DATA_PORT   0xc00000
#define VDP_CTL_PORT    0xc00004

/* VDP access type */
#define VDP_VRAM        0x40000000
#define VDP_CRAM        0xc0000000
#define VDP_VSRAM       0x40000010

#ifndef ASM
#include <stdint.h>

#define REG16PTR(addr)  (*(volatile uint16_t*)(addr))
#define REG32PTR(addr)  (*(volatile uint32_t*)(addr))

#define Z80_MEMMODE                     REG16PTR(0xa11000)
#define Z80_BUSREQ                      REG16PTR(0xa11100)
#define Z80_RESET                       REG16PTR(0xa11200)
#define Z80_MEM                         ((uint8_t*)0xa00000)

#define VDP_DATA                REG16PTR(VDP_DATA_PORT)
#define VDP_CTL                 REG16PTR(VDP_CTL_PORT)
#define VDP_CTL32               REG32PTR(VDP_CTL_PORT)
#define VDP_STAT                VDP_CTL
#endif  /* !def ASM */

#define VDP_REG_MODE1           0
#define VDP_REG_MODE2           1
#define VDP_REG_NAMEA           2
#define VDP_REG_NAMEW           3
#define VDP_REG_NAMEB           4
#define VDP_REG_SPR                     5
#define VDP_REG_BGCOL           7
#define VDP_REG_HINTR           10
#define VDP_REG_MODE3           11
#define VDP_REG_MODE4           12
#define VDP_REG_HSCROLL         13
#define VDP_REG_AUTOINC         15
#define VDP_REG_SCROLLSZ        16
#define VDP_REG_WINX            17
#define VDP_REG_WINY            18
#define VDP_REG_DMACNTL         19
#define VDP_REG_DMACNTH         20
#define VDP_REG_DMASRCL         21
#define VDP_REG_DMASRCM         22
#define VDP_REG_DMASRCH         23

#define VDP_ST_PAL              0x001
#define VDP_ST_DMA              0x002
#define VDP_ST_HBLANK   0x004
#define VDP_ST_VBLANK   0x008
#define VDP_ST_ODDFRM   0x010
#define VDP_ST_COL              0x020
#define VDP_ST_SPROVF   0x040
#define VDP_ST_VINTR    0x080
#define VDP_ST_FULL             0x100
#define VDP_ST_EMPT             0x200

#define VDP_M1_INIT             0x04
#define VDP_M1_HVSTOP   0x02
#define VDP_M1_HINTR    0x10

#define VDP_M2_INIT             0x04
#define VDP_M2_V30              0x08
#define VDP_M2_DMA              0x10
#define VDP_M2_VINTR    0x20
#define VDP_M2_DISP             0x40

#define VDP_NA_ADDR(x)  (((x) >> 10) & 0x38)
#define VDP_NW_ADDR(x)  (((x) >> 10) & 0x3e)
#define VDP_NB_ADDR(x)  ((x) >> 13)
#define VDP_SPRTAB_ADDR(x)      ((x) >> 9)
#define VDP_HSTAB_ADDR(x)       ((x) >> 10)

#define VDP_ADDR_INVAL  0x10000

#define VDP_BGCOL(pal, col)     (((pal) << 4) | (col))

#define VDP_M3_HFULL    0
#define VDP_M3_HCELL    0x02
#define VDP_M3_HLINE    0x03
#define VDP_M3_VFULL    0
#define VDP_M3_V2CELL   0x04
#define VDP_M3_EXTINTR  0x08

#define VDP_M4_H40              0x81
#define VDP_M4_ILACE    0x02
#define VDP_M4_ILACE2X  0x06
#define VDP_M4_SHAD             0x08

#define VDP_SCR_H32             0
#define VDP_SCR_H64             0x01
#define VDP_SCR_H128    0x03
#define VDP_SCR_V32             0
#define VDP_SCR_V64             0x10
#define VDP_SCR_V128    0x30

#define VDP_WINX_RIGHT  0x80
#define VDP_WINY_DOWN   0x80

#define VDP_DMA_MEM             0
#define VDP_DMA_FILL    0x80
#define VDP_DMA_COPY    0xc0

#endif  /* HWREGS_H_ */