/*
x
Sega System H1
preliminary

22 Aug 2004 - Basic skeleton driver, loads some roms doesn't run the right code yet

Known Games on this Platform
Cool Riders

-- readme --

Cool Riders by SEGA 1995

SYSTEM H1 CPU Board :

Processors :

Hitachi SH2 HD6417095

Toshiba TMP68HC000N-16

Hitachi SH7032 HD6417032F20

Eprom : Ep17662.12

SEGA CUSTOM IC :

315-5687 (x2) (SCSP)

315-5757

315-5758

315-5849

315-5800 GAL16V8B

315-5801 GAL16V8B

315-5802 GAL16V8B

SYSTEM H1 VIDEO BOARD :

SEGA CUSTOM IC :

315-5648 (x4)

315-5691

315-5692

315-5693 (x2)

315-5694

315-5695 (x2)

315-5696 (x2)

315-5697

315-5698

315-5803 GAL16V8B

315-5864 GAL16V8B

*/

#include <stdio.h>
#include "driver.h"
#include "sound/scsp.h"

/* video */

static VIDEO_START(coolridr)
{
}

static VIDEO_UPDATE(coolridr)
{
	return 0;
}

/* end video */

static UINT32* sysh1_workram_h;
//UINT16* sysh1_soundram;

// what's wrong:
//
// SH-1 waits for "SEGA" at 0530008c after writing it to 6000020 and 600010c
// SH-2 writes 0x01 to 060d88a5, expects something (SH-1?) to change that

static ADDRESS_MAP_START( system_h1_map, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x00000000, 0x000fffff) AM_ROM
	AM_RANGE(0x03f00000, 0x03f0ffff) AM_RAM // either RAM or registers, not sure
	AM_RANGE(0x06000000, 0x060fffff) AM_RAM AM_BASE(&sysh1_workram_h)
ADDRESS_MAP_END

static ADDRESS_MAP_START( coolridr_submap, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x00000000, 0x0001ffff) AM_ROM
	AM_RANGE(0x01000000, 0x0100ffff) AM_RAM
	AM_RANGE(0x05200000, 0x052001ff) AM_RAM
	AM_RANGE(0x05300000, 0x0530ffff) AM_RAM
	AM_RANGE(0x06000000, 0x06000fff) AM_RAM
	AM_RANGE(0x07fff000, 0x07ffffff) AM_RAM
ADDRESS_MAP_END

// SH-1 or SH-2 almost certainly copies the program down to here: the ROM containing the program is 32-bit wide and the 68000 is 16-bit
// the SCSP is believed to be hardcoded to decode the first 4 MB like this for a master/slave config
// (see also Model 3):
static ADDRESS_MAP_START( system_h1_sound_map, ADDRESS_SPACE_PROGRAM, 16 )
	AM_RANGE(0x000000, 0x07ffff) AM_RAM
	AM_RANGE(0x100000, 0x100fff) AM_READWRITE(SCSP_0_r, SCSP_0_w)
	AM_RANGE(0x200000, 0x27ffff) AM_RAM
	AM_RANGE(0x300000, 0x300fff) AM_READWRITE(SCSP_1_r, SCSP_1_w)
ADDRESS_MAP_END

static INPUT_PORTS_START( coolridr )
INPUT_PORTS_END

static const gfx_layout tiles8x8_layout =
{
	16,16,
	RGN_FRAC(1,1),
	8,
	{ 0, 1, 2, 3,4,5,6,7 },
	{ 16, 24, 0, 8,
	  48,56,32,40,
	  80,88,64,72,
	  112,120,96,104 },
	{ 0*128, 1*128, 2*128, 3*128, 4*128, 5*128, 6*128, 7*128, 8*128, 9*128, 10*128, 11*128, 12*128, 13*128, 14*128, 15*128 },
	16*128
};

static GFXDECODE_START( coolridr )
	GFXDECODE_ENTRY( REGION_GFX1, 0, tiles8x8_layout, 0, 16 )
	GFXDECODE_ENTRY( REGION_GFX2, 0, tiles8x8_layout, 0, 16 )
	GFXDECODE_ENTRY( REGION_GFX3, 0, tiles8x8_layout, 0, 16 )
	GFXDECODE_ENTRY( REGION_GFX4, 0, tiles8x8_layout, 0, 16 )
	GFXDECODE_ENTRY( REGION_GFX5, 0, tiles8x8_layout, 0, 16 )

GFXDECODE_END


// IRQs 2 & 3 are valid on SH-2
static INTERRUPT_GEN( system_h1 )
{
	if (cpu_getiloops())
	{
		cpunum_set_input_line(0, 4, HOLD_LINE);
	}
	else
	{
		cpunum_set_input_line(0, 3, HOLD_LINE);
	}
}

// not sure on SH-1
static INTERRUPT_GEN( system_h1_sub )
{
	if (cpu_getiloops())
	{
//      cpunum_set_input_line(2, 4, HOLD_LINE);
	}
	else
	{
//      cpunum_set_input_line(2, 3, HOLD_LINE);
	}
}

static MACHINE_RESET ( coolridr )
{

//  cpunum_set_input_line(0, INPUT_LINE_HALT, ASSERT_LINE);
	cpunum_set_input_line(1, INPUT_LINE_HALT, ASSERT_LINE);

}

static MACHINE_DRIVER_START( coolridr )
	MDRV_CPU_ADD_TAG("main", SH2, 28000000)	// ?? mhz
	MDRV_CPU_PROGRAM_MAP(system_h1_map,0)
	MDRV_CPU_VBLANK_INT(system_h1, 2)

	MDRV_CPU_ADD_TAG("sound", M68000, 12000000)	// ?? mhz
	MDRV_CPU_PROGRAM_MAP(system_h1_sound_map,0)

	MDRV_CPU_ADD_TAG("sub", SH2, 8000000)	// SH7032 HD6417032F20!! ?? mhz
	MDRV_CPU_PROGRAM_MAP(coolridr_submap,0)
	MDRV_CPU_VBLANK_INT(system_h1_sub, 2)

	MDRV_GFXDECODE(coolridr)


	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)

	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(64*8, 64*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 64*8-1)
	MDRV_PALETTE_LENGTH(0x2000)
	MDRV_MACHINE_RESET(coolridr)

	MDRV_VIDEO_START(coolridr)
	MDRV_VIDEO_UPDATE(coolridr)
MACHINE_DRIVER_END

ROM_START( coolridr )
	ROM_REGION( 0x200000, REGION_CPU1, 0 ) /* SH2 code */
	ROM_LOAD32_WORD_SWAP( "ep17659.30", 0x0000000, 0x080000, CRC(473027b0) SHA1(acaa212869dd79550235171b9f054e82750f74c3) )
	ROM_LOAD32_WORD_SWAP( "ep17658.29", 0x0000002, 0x080000, CRC(7ecfdfcc) SHA1(97cb3e6cf9764c8db06de12e4e958148818ef737) )

	ROM_REGION( 0x100000, REGION_CPU2, 0 )	/* 68000 */
	ROM_LOAD32_WORD_SWAP( "ep17661.32", 0x0000000, 0x080000, CRC(81a7d90b) SHA1(99f8c3e75b94dd1b60455c26dc38ce08db82fe32) )
	ROM_LOAD32_WORD_SWAP( "ep17660.31", 0x0000002, 0x080000, CRC(27b7a507) SHA1(4c28b1d18d75630a73194b5d4fd166f3b647c595) )

	ROM_REGION( 0x100000, REGION_CPU3, 0 ) /* SH1 */
	ROM_LOAD16_WORD_SWAP( "ep17662.12", 0x000000, 0x020000,  CRC(50d66b1f) SHA1(f7b7f2f5b403a13b162f941c338a3e1207762a0b) )

	ROM_REGION( 0x0400000, REGION_GFX1, 0 ) /* Tiles. . at least 1 format */
	ROM_LOAD32_WORD_SWAP( "mp17650.11",0x000000, 0x0200000, CRC(0ccc84a1) SHA1(65951685b0c8073f6bd1cf9959e1b4d0fc6031d8) )
	ROM_LOAD32_WORD_SWAP( "mp17651.12",0x000002, 0x0200000, CRC(25fd7dde) SHA1(a1c3f3d947ce20fbf61ea7ab235259be9b7d35a8) )

	ROM_REGION( 0x0400000, REGION_GFX2, 0 ) /* Tiles. . at least 1 format */
	ROM_LOAD32_WORD_SWAP( "mp17652.13",0x000000, 0x0200000, CRC(be9b4d05) SHA1(0252ba647434f69d6eacb4efc6f55e6af534c7c5) )
	ROM_LOAD32_WORD_SWAP( "mp17653.14",0x000002, 0x0200000, CRC(64d1406d) SHA1(779dbbf42a14a6be1de9afbae5bbb18f8f36ceb3) )

	ROM_REGION( 0x0400000, REGION_GFX3, 0 ) /*Tiles. . at least 1 format + sprites (non-tile data)? */
	ROM_LOAD32_WORD_SWAP( "mp17654.15",0x000000, 0x0200000, CRC(5dee5cba) SHA1(6e6ec8574bdd35cc27903fc45f0d4a36ce9df103) )
	ROM_LOAD32_WORD_SWAP( "mp17655.16",0x000002, 0x0200000, CRC(02903cf2) SHA1(16d555fda144e0f1b62b428e9158a0e8ebf7084e) )

	ROM_REGION( 0x0400000, REGION_GFX4, 0 ) /* sprites (non-tile data?) */
	ROM_LOAD32_WORD_SWAP( "mp17656.17",0x000000, 0x0200000, CRC(945c89e3) SHA1(8776d74f73898d948aae3c446d7c710ad0407603) )
	ROM_LOAD32_WORD_SWAP( "mp17657.18",0x000002, 0x0200000, CRC(74676b1f) SHA1(b4a9003a052bde93bebfa4bef9e8dff65003c3b2) )

	/* these 10 interleave somehow?? */
	ROM_REGION( 0x1600000, REGION_GFX5, ROMREGION_ERASEFF ) /* Other Roms */
	ROMX_LOAD( "mp17640.1", 0x0000000, 0x0200000, CRC(5ecd98c7) SHA1(22027c1e9e6195d27f29a5779695d8597f68809e), ROM_SKIP(9) )
	ROMX_LOAD( "mp17641.2", 0x0000001, 0x0200000, CRC(a59b0605) SHA1(c93f84fd58f1942b40b7a55058e02a18a3dec3af), ROM_SKIP(9) )
	ROMX_LOAD( "mp17642.3", 0x0000002, 0x0200000, CRC(5f8a1827) SHA1(23179d751777436f2a4f652132001d5e425d8cd5), ROM_SKIP(9) )
	ROMX_LOAD( "mp17643.4", 0x0000003, 0x0200000, CRC(44a05dd0) SHA1(32aa86f8761ec6ffceb63979c44828603c244e7d), ROM_SKIP(9) )
	ROMX_LOAD( "mp17644.5", 0x0000004, 0x0200000, CRC(be2763c5) SHA1(1044b0a73e334337b0b9ac958df59480aedfb942), ROM_SKIP(9) )
	ROMX_LOAD( "mp17645.6", 0x0000005, 0x0200000, CRC(00954173) SHA1(863f32565296448ef10992dc3c0480411eb2b193), ROM_SKIP(9) )
	ROMX_LOAD( "mp17646.7", 0x0000006, 0x0200000, CRC(7ae4d92e) SHA1(8a0eaa5dce112289ac5d16ad5dc7f5895e71e87b), ROM_SKIP(9) )
	ROMX_LOAD( "mp17647.8", 0x0000007, 0x0200000, CRC(082faee8) SHA1(c047b8475517f96f481c09471a77aa0d103631d6), ROM_SKIP(9) )
	ROMX_LOAD( "mp17648.9", 0x0000008, 0x0200000, CRC(0791802f) SHA1(acad55bbd22c7e955a729c8abed9509fc6f10927), ROM_SKIP(9) )
	ROMX_LOAD( "mp17649.10",0x0000009, 0x0200000, CRC(567fbc0a) SHA1(3999c99b26f13d97ac1c58de00a44049ee7775fd), ROM_SKIP(9) )
ROM_END

GAME( 1995, coolridr,    0, coolridr,    coolridr,    0, ROT0,  "Sega", "Cool Riders",GAME_NOT_WORKING|GAME_NO_SOUND )
