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mame/src/mess/drivers/wswan.c

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/***************************************************************************
wswan.c
Driver file to handle emulation of the Bandai WonderSwan
By:
Anthony Kruize
Wilbert Pol
Based on the WStech documentation by Judge and Dox.
Known issues/TODOs:
- Get the V30MZ core into MAME, still need to remove some nec specific
instructions and fix the flags handling of the div/mul instructions.
- Add support for noise sound
- Add support for voice sound
- Add support for enveloped sound
- Perform video DMA at proper timing.
- Add sound DMA.
- Setup some reasonable values in the internal EEPROM area?
- Add (real/proper) RTC support.
- Look into timing issues like in Puzzle Bobble. VBlank interrupt lasts very long
which causes sprites to be disabled until about 10%-40% of drawing the screen.
The real unit seems to display things fine, need a real unit + real cart to
verify.
- Is background color setting really ok?
- Get a dump of the internal BIOSes.
- Swan Crystal can handle up to 512Mbit ROMs??????
***************************************************************************/
#include "includes/wswan.h"
#include "wswan.lh"
static ADDRESS_MAP_START (wswan_mem, AS_PROGRAM, 8, wswan_state)
AM_RANGE(0x00000, 0x03fff) AM_RAM /* 16kb RAM / 4 colour tiles */
AM_RANGE(0x04000, 0x0ffff) AM_NOP /* nothing */
AM_RANGE(0x10000, 0x1ffff) AM_READWRITE(wswan_sram_r, wswan_sram_w) /* SRAM bank */
AM_RANGE(0x20000, 0x2ffff) AM_ROMBANK("rom1") /* ROM bank 1 */
AM_RANGE(0x30000, 0x3ffff) AM_ROMBANK("rom2") /* ROM bank 2 */
AM_RANGE(0x40000, 0x4ffff) AM_ROMBANK("rom3") /* ROM bank 3 */
AM_RANGE(0x50000, 0x5ffff) AM_ROMBANK("rom4") /* ROM bank 4 */
AM_RANGE(0x60000, 0x6ffff) AM_ROMBANK("rom5") /* ROM bank 5 */
AM_RANGE(0x70000, 0x7ffff) AM_ROMBANK("rom6") /* ROM bank 6 */
AM_RANGE(0x80000, 0x8ffff) AM_ROMBANK("rom7") /* ROM bank 7 */
AM_RANGE(0x90000, 0x9ffff) AM_ROMBANK("rom8") /* ROM bank 8 */
AM_RANGE(0xa0000, 0xaffff) AM_ROMBANK("rom9") /* ROM bank 9 */
AM_RANGE(0xb0000, 0xbffff) AM_ROMBANK("rom10") /* ROM bank 10 */
AM_RANGE(0xc0000, 0xcffff) AM_ROMBANK("rom11") /* ROM bank 11 */
AM_RANGE(0xd0000, 0xdffff) AM_ROMBANK("rom12") /* ROM bank 12 */
AM_RANGE(0xe0000, 0xeffff) AM_ROMBANK("rom13") /* ROM bank 13 */
AM_RANGE(0xf0000, 0xfffff) AM_ROMBANK("rom14") /* ROM bank 14 */
ADDRESS_MAP_END
static ADDRESS_MAP_START (wscolor_mem, AS_PROGRAM, 8, wswan_state)
AM_RANGE(0x00000, 0x0ffff) AM_RAM /* 16kb RAM / 4 colour tiles, 16 colour tiles + palettes */
AM_RANGE(0x10000, 0x1ffff) AM_READWRITE(wswan_sram_r, wswan_sram_w) /* SRAM bank */
AM_RANGE(0x20000, 0x2ffff) AM_ROMBANK("rom1") /* ROM bank 1 */
AM_RANGE(0x30000, 0x3ffff) AM_ROMBANK("rom2") /* ROM bank 2 */
AM_RANGE(0x40000, 0x4ffff) AM_ROMBANK("rom3") /* ROM bank 3 */
AM_RANGE(0x50000, 0x5ffff) AM_ROMBANK("rom4") /* ROM bank 4 */
AM_RANGE(0x60000, 0x6ffff) AM_ROMBANK("rom5") /* ROM bank 5 */
AM_RANGE(0x70000, 0x7ffff) AM_ROMBANK("rom6") /* ROM bank 6 */
AM_RANGE(0x80000, 0x8ffff) AM_ROMBANK("rom7") /* ROM bank 7 */
AM_RANGE(0x90000, 0x9ffff) AM_ROMBANK("rom8") /* ROM bank 8 */
AM_RANGE(0xa0000, 0xaffff) AM_ROMBANK("rom9") /* ROM bank 9 */
AM_RANGE(0xb0000, 0xbffff) AM_ROMBANK("rom10") /* ROM bank 10 */
AM_RANGE(0xc0000, 0xcffff) AM_ROMBANK("rom11") /* ROM bank 11 */
AM_RANGE(0xd0000, 0xdffff) AM_ROMBANK("rom12") /* ROM bank 12 */
AM_RANGE(0xe0000, 0xeffff) AM_ROMBANK("rom13") /* ROM bank 13 */
AM_RANGE(0xf0000, 0xfffff) AM_ROMBANK("rom14") /* ROM bank 14 */
ADDRESS_MAP_END
static ADDRESS_MAP_START (wswan_io, AS_IO, 8, wswan_state)
AM_RANGE(0x00, 0xff) AM_READWRITE(wswan_port_r, wswan_port_w) /* I/O ports */
ADDRESS_MAP_END
static INPUT_PORTS_START( wswan )
PORT_START("CURSX") /* Cursors (X1-X4) */
PORT_BIT( 0x1, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_NAME("X1 - Up")
PORT_BIT( 0x4, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_NAME("X3 - Down")
PORT_BIT( 0x8, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_NAME("X4 - Left")
PORT_BIT( 0x2, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_NAME("X2 - Right")
PORT_START("BUTTONS") /* Buttons */
PORT_BIT( 0x2, IP_ACTIVE_HIGH, IPT_START1 ) PORT_NAME("Start")
PORT_BIT( 0x4, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Button A")
PORT_BIT( 0x8, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("Button B")
PORT_START("CURSY") /* Cursors (Y1-Y4) */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Y1 - Up") PORT_CODE(KEYCODE_W)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Y3 - Down") PORT_CODE(KEYCODE_S)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Y4 - Left") PORT_CODE(KEYCODE_A)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Y2 - Right") PORT_CODE(KEYCODE_D)
INPUT_PORTS_END
static GFXDECODE_START( wswan )
GFXDECODE_END
/* WonderSwan can display 16 shades of grey */
PALETTE_INIT_MEMBER(wswan_state, wswan)
{
int ii;
for (ii = 0; ii < 16; ii++)
{
UINT8 shade = ii * (256 / 16);
palette.set_pen_color(15 - ii, shade, shade, shade);
}
}
PALETTE_INIT_MEMBER(wswan_state,wscolor)
{
int i;
for (i = 0; i < 4096; i++)
{
int r = (i & 0x0f00) >> 8;
int g = (i & 0x00f0) >> 4;
int b = i & 0x000f;
palette.set_pen_color(i, r << 4, g << 4, b << 4);
}
}
static MACHINE_CONFIG_START( wswan, wswan_state )
/* Basic machine hardware */
MCFG_CPU_ADD("maincpu", V30MZ, 3072000)
MCFG_CPU_PROGRAM_MAP(wswan_mem)
MCFG_CPU_IO_MAP(wswan_io)
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(75)
MCFG_SCREEN_VBLANK_TIME(0)
MCFG_SCREEN_UPDATE_DRIVER(wswan_state, screen_update)
MCFG_SCREEN_SIZE( WSWAN_X_PIXELS, WSWAN_Y_PIXELS )
MCFG_SCREEN_VISIBLE_AREA(0*8, WSWAN_X_PIXELS - 1, 0, WSWAN_Y_PIXELS - 1)
MCFG_DEFAULT_LAYOUT(layout_wswan)
MCFG_QUANTUM_TIME(attotime::from_hz(60))
MCFG_NVRAM_ADD_1FILL("nvram")
MCFG_GFXDECODE_ADD("gfxdecode", wswan)
MCFG_PALETTE_ADD("palette", 16)
MCFG_PALETTE_INIT_OWNER(wswan_state, wswan)
/* sound hardware */
MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
MCFG_SOUND_ADD("custom", WSWAN, 0)
MCFG_SOUND_ROUTE(0, "lspeaker", 0.50)
MCFG_SOUND_ROUTE(1, "rspeaker", 0.50)
/* cartridge */
MCFG_CARTSLOT_ADD("cart")
MCFG_CARTSLOT_EXTENSION_LIST("ws,wsc,bin")
MCFG_CARTSLOT_MANDATORY
MCFG_CARTSLOT_INTERFACE("wswan_cart")
MCFG_CARTSLOT_LOAD(wswan_state,wswan_cart)
/* software lists */
MCFG_SOFTWARE_LIST_ADD("cart_list","wswan")
MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("wsc_list","wscolor")
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( wscolor, wswan )
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(wscolor_mem)
MCFG_MACHINE_START_OVERRIDE(wswan_state, wscolor )
MCFG_PALETTE_MODIFY("palette")
MCFG_PALETTE_ENTRIES(4096)
MCFG_PALETTE_INIT_OWNER(wswan_state, wscolor )
/* software lists */
MCFG_DEVICE_REMOVE("cart_list")
MCFG_DEVICE_REMOVE("wsc_list")
MCFG_SOFTWARE_LIST_ADD("cart_list","wscolor")
MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("ws_list","wswan")
MACHINE_CONFIG_END
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( wswan )
ROM_REGION( 0x100000, "maincpu", ROMREGION_ERASEFF )
// ROM_LOAD_OPTIONAL( "ws_bios.bin", 0x0000, 0x0001, NO_DUMP )
ROM_END
ROM_START( wscolor )
ROM_REGION( 0x100000, "maincpu", ROMREGION_ERASEFF )
// ROM_LOAD_OPTIONAL( "wsc_bios.bin", 0x0000, 0x0001, NO_DUMP )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME*/
CONS( 1999, wswan, 0, 0, wswan, wswan, wswan_state, wswan, "Bandai", "WonderSwan", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
CONS( 2000, wscolor, wswan, 0, wscolor, wswan, wswan_state, wswan, "Bandai", "WonderSwan Color", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
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