/*

	dc.c - Sega Dreamcast skeleton driver
	by R. Belmont

	SH-4 @ 200 MHz
	ARM7TDMI @ 45 MHz
	PowerVR 3D video
	AICA audio
	GD-ROM drive (modified ATAPI interface)
*/

#include "driver.h"
#include "video/generic.h"
#include "cpu/arm7/arm7core.h"
#include "dc.h"

static UINT64 *dc_sound_ram;

static ADDRESS_MAP_START( dc_map, ADDRESS_SPACE_PROGRAM, 64 )
	AM_RANGE(0x00000000, 0x001fffff) AM_ROM						// BIOS
	AM_RANGE(0x00200000, 0x0021ffff) AM_ROM AM_REGION(REGION_CPU1, 0x200000)	// flash
	AM_RANGE(0x005f6800, 0x005f69ff) AM_READWRITE( dc_sysctrl_r, dc_sysctrl_w )
	AM_RANGE(0x005f6c00, 0x005f6cff) AM_READWRITE( dc_maple_r, dc_maple_w )
	AM_RANGE(0x005f7000, 0x005f70ff) AM_READWRITE( dc_gdrom_r, dc_gdrom_w )
	AM_RANGE(0x005f7400, 0x005f74ff) AM_READWRITE( dc_g1_ctrl_r, dc_g1_ctrl_w )
	AM_RANGE(0x005f7800, 0x005f78ff) AM_READWRITE( dc_g2_ctrl_r, dc_g2_ctrl_w )
	AM_RANGE(0x005f7c00, 0x005f7cff) AM_READWRITE( pvr_ctrl_r, pvr_ctrl_w )
	AM_RANGE(0x005f8000, 0x005f9fff) AM_READWRITE( pvr_ta_r, pvr_ta_w )
	AM_RANGE(0x00600000, 0x006007ff) AM_READWRITE( dc_modem_r, dc_modem_w )
	AM_RANGE(0x00700000, 0x00707fff) AM_READWRITE( dc_aica_reg_r, dc_aica_reg_w )
	AM_RANGE(0x00710000, 0x0071000f) AM_READWRITE( dc_rtc_r, dc_rtc_w )
	AM_RANGE(0x00800000, 0x009fffff) AM_RAM	AM_BASE( &dc_sound_ram )		// sound RAM
	AM_RANGE(0x04000000, 0x04ffffff) AM_RAM	AM_SHARE(2)	// texture memory
	AM_RANGE(0x05000000, 0x05ffffff) AM_RAM AM_SHARE(2)	// mirror of texture RAM
	AM_RANGE(0x0c000000, 0x0cffffff) AM_RAM AM_SHARE(1)
	AM_RANGE(0x0d000000, 0x0dffffff) AM_RAM AM_SHARE(1)	// mirror of main RAM
	AM_RANGE(0x10000000, 0x107fffff) AM_WRITE( ta_fifo_poly_w )
	AM_RANGE(0x10800000, 0x10ffffff) AM_WRITE( ta_fifo_yuv_w )
	AM_RANGE(0x11000000, 0x11ffffff) AM_RAM AM_SHARE(2)	// another mirror of texture memory
	AM_RANGE(0xa0000000, 0xa01fffff) AM_ROM AM_REGION(REGION_CPU1, 0)
ADDRESS_MAP_END

static ADDRESS_MAP_START( dc_audio_map, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x00000000, 0x001fffff) AM_RAM		/* shared with SH-4 */
ADDRESS_MAP_END

INPUT_PORTS_START( dc )
INPUT_PORTS_END

static MACHINE_DRIVER_START( dc )
	/* basic machine hardware */
	MDRV_CPU_ADD_TAG("main", SH4, 200000000)
	MDRV_CPU_PROGRAM_MAP(dc_map,0)

	MDRV_CPU_ADD_TAG("sound", ARM7, 45000000)
	MDRV_CPU_PROGRAM_MAP(dc_audio_map, 0)

	MDRV_MACHINE_RESET( dc )

	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER )
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
	MDRV_SCREEN_SIZE(16*8, 16*8)
	MDRV_SCREEN_VISIBLE_AREA(0, 16*8-1, 0, 16*8-1)
	MDRV_PALETTE_LENGTH(0x1000)

	MDRV_VIDEO_START(dc)
	MDRV_VIDEO_UPDATE(dc)
MACHINE_DRIVER_END

ROM_START(dc)
	ROM_REGION(0x220000, REGION_CPU1, 0)
        ROM_LOAD( "dc101d_us.bin", 0x000000, 0x200000, CRC(89f2b1a1) SHA1(8951d1bb219ab2ff8583033d2119c899cc81f18c) )	// BIOS
        ROM_LOAD( "dcus_ntsc.bin", 0x200000, 0x020000, CRC(c611b498) SHA1(94d44d7f9529ec1642ba3771ed3c5f756d5bc872) )	// Flash
ROM_END

ROM_START( dceu )
	ROM_REGION(0x220000, REGION_CPU1, 0)
        ROM_LOAD( "dc101d_eu.bin", 0x000000, 0x200000, CRC(a2564fad) SHA1(edc5d3d70a93c935703d26119b37731fd317d2bf) )	// BIOS
        ROM_LOAD( "dceu_pal.bin", 0x200000, 0x020000, CRC(b7e5aeeb) SHA1(11e02433e13b793ec7ffe0ae2356750bb8a575b4) )	// Flash
ROM_END

ROM_START( dcjp )
	ROM_REGION(0x220000, REGION_CPU1, 0)
        ROM_LOAD( "dc1004jp.bin", 0x000000, 0x200000, CRC(5454841f) SHA1(1ea132c0fbbf07ef76789eadc07908045c089bd6) )	// BIOS
        ROM_LOAD( "dcjp_ntsc.bin", 0x200000, 0x020000, CRC(307a7035) SHA1(1411423a9d071340ea52c56e19c1aafc4e1309ee) )	// Flash
ROM_END

SYSTEM_CONFIG_START(dc)
SYSTEM_CONFIG_END

CONS( 1999, dc, 0, 0, dc, dc, 0, dc, "Sega", "Dreamcast (US NTSC)", GAME_NOT_WORKING )
CONS( 1998, dcjp, 0, 0, dc, dc, 0, dc, "Sega", "Dreamcast (Japan NTSC)", GAME_NOT_WORKING )
CONS( 1999, dceu, 0, 0, dc, dc, 0, dc, "Sega", "Dreamcast (European PAL)", GAME_NOT_WORKING )