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Diffstat (limited to 'src/mame/drivers/wswan.cpp')
-rw-r--r-- | src/mame/drivers/wswan.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/mame/drivers/wswan.cpp b/src/mame/drivers/wswan.cpp new file mode 100644 index 00000000000..bb13d3a291c --- /dev/null +++ b/src/mame/drivers/wswan.cpp @@ -0,0 +1,186 @@ +// license:BSD-3-Clause +// copyright-holders:Anthony Kruize,Wilbert Pol +/*************************************************************************** + + 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 "softlist.h" +#include "wswan.lh" + +static ADDRESS_MAP_START (wswan_mem, AS_PROGRAM, 8, wswan_state) + AM_RANGE(0x00000, 0x03fff) AM_DEVREADWRITE("vdp", wswan_video_device, vram_r, vram_w) // 16kb RAM / 4 colour tiles + AM_RANGE(0x04000, 0x0ffff) AM_NOP // nothing + //AM_RANGE(0x10000, 0xeffff) // cart range, setup at machine_start + AM_RANGE(0xf0000, 0xfffff) AM_READ(bios_r) +ADDRESS_MAP_END + +static ADDRESS_MAP_START (wscolor_mem, AS_PROGRAM, 8, wswan_state) + AM_RANGE(0x00000, 0x0ffff) AM_DEVREADWRITE("vdp", wswan_video_device, vram_r, vram_w) // 16kb RAM / 4 colour tiles, 16 colour tiles + palettes + //AM_RANGE(0x10000, 0xeffff) // cart range, setup at machine_start + AM_RANGE(0xf0000, 0xfffff) AM_READ(bios_r) +ADDRESS_MAP_END + +static ADDRESS_MAP_START (wswan_io, AS_IO, 8, wswan_state) + AM_RANGE(0x00, 0xff) AM_READWRITE(port_r, port_w) // I/O ports +ADDRESS_MAP_END + +static INPUT_PORTS_START( wswan ) + PORT_START("CURSX") + 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") + 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") + 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) +{ + for (int i = 0; i < 16; i++) + { + UINT8 shade = i * (256 / 16); + palette.set_pen_color(15 - i, shade, shade, shade); + } +} + +PALETTE_INIT_MEMBER(wswan_state, wscolor) +{ + for (int 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 SLOT_INTERFACE_START(wswan_cart) + SLOT_INTERFACE_INTERNAL("ws_rom", WS_ROM_STD) + SLOT_INTERFACE_INTERNAL("ws_sram", WS_ROM_SRAM) + SLOT_INTERFACE_INTERNAL("ws_eeprom", WS_ROM_EEPROM) +SLOT_INTERFACE_END + +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_DEVICE_ADD("vdp", WSWAN_VIDEO, 0) + MCFG_WSWAN_VIDEO_TYPE(VDP_TYPE_WSWAN) + MCFG_WSWAN_VIDEO_IRQ_CB(wswan_state, set_irq_line) + MCFG_WSWAN_VIDEO_DMASND_CB(wswan_state, dma_sound_cb) + + MCFG_SCREEN_ADD("screen", LCD) + MCFG_SCREEN_REFRESH_RATE(75) + MCFG_SCREEN_VBLANK_TIME(0) + MCFG_SCREEN_UPDATE_DEVICE("vdp", wswan_video_device, 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_SCREEN_PALETTE("palette") + + MCFG_DEFAULT_LAYOUT(layout_wswan) + + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + MCFG_NVRAM_ADD_1FILL("nvram") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", 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_SND, 0) + MCFG_SOUND_ROUTE(0, "lspeaker", 0.50) + MCFG_SOUND_ROUTE(1, "rspeaker", 0.50) + + /* cartridge */ + MCFG_WSWAN_CARTRIDGE_ADD("cartslot", wswan_cart, NULL) + + /* 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_DEVICE_MODIFY("vdp") + MCFG_WSWAN_VIDEO_TYPE(VDP_TYPE_WSC) + + 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, driver_device, 0, "Bandai", "WonderSwan", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) +CONS( 2000, wscolor, wswan, 0, wscolor, wswan, driver_device, 0, "Bandai", "WonderSwan Color", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) |