diff options
Diffstat (limited to 'src/mame/drivers/sg1000.cpp')
-rw-r--r-- | src/mame/drivers/sg1000.cpp | 916 |
1 files changed, 916 insertions, 0 deletions
diff --git a/src/mame/drivers/sg1000.cpp b/src/mame/drivers/sg1000.cpp new file mode 100644 index 00000000000..607c56cf4b1 --- /dev/null +++ b/src/mame/drivers/sg1000.cpp @@ -0,0 +1,916 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/* + +Sega SG-1000 + +PCB Layout +---------- + +171-5078 (C) SEGA 1983 +171-5046 REV. A (C) SEGA 1983 + +|---------------------------| |----------------------------| +| SW1 CN2 | |------|---------------| | SW2 CN4 | +| |---| CN3 |---| | +| CN1 CN5 | +| | +| 10.738635MHz |------------------------------| 7805 | +| |---| |------------------------------| | +| | | CN6 | +| | 9 | | +| | 9 | LS32 | +| | 1 | |---------| | +| | 8 | | TMM2009 | LS139 | +| | A | |---------| |------------------| | +| | | | Z80 | | +| |---| |------------------| | +| | +| | +| MB8118 MB8118 MB8118 MB8118 SN76489A SW3 | +| MB8118 MB8118 MB8118 MB8118 LS257 LS257 | +|---------------------------------------------------------------------------------------| + +Notes: + All IC's shown. + + Z80 - NEC D780C-1 / Zilog Z8400A (REV.A) Z80A CPU @ 3.579545 + TMS9918A- Texas Instruments TMS9918ANL Video Display Processor @ 10.738635MHz + MB8118 - Fujitsu MB8118-12 16K x 1 Dynamic RAM + TMM2009 - Toshiba TMM2009P-A / TMM2009P-B (REV.A) + SN76489A- Texas Instruments SN76489AN Digital Complex Sound Generator @ 3.579545 + CN1 - player 1 joystick connector + CN2 - RF video connector + CN3 - keyboard connector + CN4 - power connector (+9VDC) + CN5 - player 2 joystick connector + CN6 - cartridge connector + SW1 - TV channel select switch + SW2 - power switch + SW3 - hold switch + +*/ + +/* + + TODO: + + - SC-3000 return instruction referenced by R when reading ports 60-7f,e0-ff + - connect PSG /READY signal to Z80 WAIT + - accurate video timing + - SP-400 serial printer + - SH-400 racing controller + - SF-7000 serial comms + +*/ + + +#include "includes/sg1000.h" +#include "bus/rs232/rs232.h" +#include "softlist.h" + + +/*************************************************************************** + READ/WRITE HANDLERS +***************************************************************************/ + +// TODO: not sure if the OMV bios actually detects the presence of a cart, +// or if the cart data simply overwrites the internal bios... +// for the moment let assume the latter! +READ8_MEMBER( sg1000_state::omv_r ) +{ + if (m_cart && m_cart->exists()) + return m_cart->read_cart(space, offset); + else + return m_rom->base()[offset]; +} + +WRITE8_MEMBER( sg1000_state::omv_w ) +{ + if (m_cart && m_cart->exists()) + m_cart->write_cart(space, offset, data); +} + +/*------------------------------------------------- + joysel_r - +-------------------------------------------------*/ + +READ8_MEMBER( sg1000_state::joysel_r ) +{ + return 0x80; +} + +/*------------------------------------------------- + ADDRESS_MAP( sg1000_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sg1000_map, AS_PROGRAM, 8, sg1000_state ) + AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart) + AM_RANGE(0xc000, 0xc3ff) AM_MIRROR(0x3c00) AM_RAM +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( sg1000_io_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sg1000_io_map, AS_IO, 8, sg1000_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) + AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) + AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) + AM_RANGE(0xdc, 0xdc) AM_READ_PORT("PA7") + AM_RANGE(0xdd, 0xdd) AM_READ_PORT("PB7") + AM_RANGE(0xde, 0xde) AM_READ(joysel_r) AM_WRITENOP + AM_RANGE(0xdf, 0xdf) AM_NOP +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( omv_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( omv_map, AS_PROGRAM, 8, sg1000_state ) + AM_RANGE(0x0000, 0xbfff) AM_READWRITE(omv_r, omv_w) + AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( omv_io_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( omv_io_map, AS_IO, 8, sg1000_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) + AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) + AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) + AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x38) AM_READ_PORT("C0") + AM_RANGE(0xc1, 0xc1) AM_MIRROR(0x38) AM_READ_PORT("C1") + AM_RANGE(0xc2, 0xc2) AM_MIRROR(0x38) AM_READ_PORT("C2") + AM_RANGE(0xc3, 0xc3) AM_MIRROR(0x38) AM_READ_PORT("C3") + AM_RANGE(0xc4, 0xc4) AM_MIRROR(0x3a) AM_READ_PORT("C4") + AM_RANGE(0xc5, 0xc5) AM_MIRROR(0x3a) AM_READ_PORT("C5") +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( sc3000_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sc3000_map, AS_PROGRAM, 8, sg1000_state ) + AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart) + AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( sc3000_io_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) + AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) + AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) + AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE(UPD9255_TAG, i8255_device, read, write) +ADDRESS_MAP_END + +/* This is how the I/O ports are really mapped, but MAME does not support overlapping ranges +static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x00, 0x00) AM_MIRROR(0xdf) AM_DEVREADWRITE(UPD9255_TAG, i8255_device, read, write) + AM_RANGE(0x00, 0x00) AM_MIRROR(0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) + AM_RANGE(0x00, 0x00) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) + AM_RANGE(0x01, 0x01) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) + AM_RANGE(0x60, 0x60) AM_MIRROR(0x9f) AM_READ(sc3000_r_r) +ADDRESS_MAP_END +*/ + +/*------------------------------------------------- + ADDRESS_MAP( sf7000_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sf7000_map, AS_PROGRAM, 8, sf7000_state ) + AM_RANGE(0x0000, 0x3fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank2") + AM_RANGE(0x4000, 0xffff) AM_RAM +ADDRESS_MAP_END + +/*------------------------------------------------- + ADDRESS_MAP( sf7000_io_map ) +-------------------------------------------------*/ + +static ADDRESS_MAP_START( sf7000_io_map, AS_IO, 8, sf7000_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) + AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) + AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) + AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE(UPD9255_0_TAG, i8255_device, read, write) + AM_RANGE(0xe0, 0xe1) AM_DEVICE(UPD765_TAG, upd765a_device, map) + AM_RANGE(0xe4, 0xe7) AM_DEVREADWRITE(UPD9255_1_TAG, i8255_device, read, write) + AM_RANGE(0xe8, 0xe8) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, data_r, data_w) + AM_RANGE(0xe9, 0xe9) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, status_r, control_w) +ADDRESS_MAP_END + +/*************************************************************************** + INPUT PORTS +***************************************************************************/ + +/*------------------------------------------------- + INPUT_CHANGED_MEMBER( trigger_nmi ) +-------------------------------------------------*/ + +INPUT_CHANGED_MEMBER( sg1000_state::trigger_nmi ) +{ + m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE); +} + +/*------------------------------------------------- + INPUT_PORTS( sg1000 ) +-------------------------------------------------*/ + +static INPUT_PORTS_START( sg1000 ) + PORT_START("PA7") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) + + PORT_START("PB7") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) + PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("NMI") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("PAUSE") PORT_CODE(KEYCODE_P) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0) +INPUT_PORTS_END + +/*------------------------------------------------- + INPUT_PORTS( omv ) +-------------------------------------------------*/ + +static INPUT_PORTS_START( omv ) + PORT_START("C0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') + PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("C1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("9 #") PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("0 *") PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("C2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') + PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("C3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') + PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("C4") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("S-1") + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("S-2") + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) + + PORT_START("C5") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) + PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) +INPUT_PORTS_END + +/*------------------------------------------------- + INPUT_PORTS( sk1100 ) +-------------------------------------------------*/ + +INPUT_PORTS_START( sk1100 ) + PORT_START("PA0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ENG DIER'S") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(RALT)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i') + + PORT_START("PA1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPC") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o') + + PORT_START("PA2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("HOME CLR") PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(HOME)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') + + PORT_START("PA3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("INS DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_SMALL_PI) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(0x03c0) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_CHAR('`') + + PORT_START("PA4") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR(']') PORT_CHAR('}') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('[') PORT_CHAR('{') + + PORT_START("PA5") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CR") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PA6") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PA7") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) + + PORT_START("PB0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PB1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PB2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PB3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PB4") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('^') + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("PB5") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xc2\xa5") PORT_CODE(KEYCODE_TILDE) PORT_CHAR(0x00a5) + PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FUNC") PORT_CODE(KEYCODE_TAB) + + PORT_START("PB6") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GRAPH") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT)) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + + PORT_START("PB7") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) + + PORT_START("NMI") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RESET") PORT_CODE(KEYCODE_F10) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0) +INPUT_PORTS_END + +/*------------------------------------------------- + INPUT_PORTS( sc3000 ) +-------------------------------------------------*/ + +static INPUT_PORTS_START( sc3000 ) + PORT_INCLUDE( sk1100 ) +INPUT_PORTS_END + +/*------------------------------------------------- + INPUT_PORTS( sf7000 ) +-------------------------------------------------*/ + +static INPUT_PORTS_START( sf7000 ) + PORT_INCLUDE( sk1100 ) + + PORT_START("BAUD") + PORT_CONFNAME( 0x07, 0x05, "Baud rate") + PORT_CONFSETTING( 0x00, "9600 baud" ) + PORT_CONFSETTING( 0x01, "4800 baud" ) + PORT_CONFSETTING( 0x02, "2400 baud" ) + PORT_CONFSETTING( 0x03, "1200 baud" ) + PORT_CONFSETTING( 0x04, "600 baud" ) + PORT_CONFSETTING( 0x05, "300 baud" ) +INPUT_PORTS_END + +/*************************************************************************** + DEVICE CONFIGURATION +***************************************************************************/ + +/*------------------------------------------------- + TMS9928a_interface tms9928a_interface +-------------------------------------------------*/ + +WRITE_LINE_MEMBER(sg1000_state::sg1000_vdp_interrupt) +{ + m_maincpu->set_input_line(INPUT_LINE_IRQ0, state); +} + +/*------------------------------------------------- + I8255 INTERFACE +-------------------------------------------------*/ + +READ8_MEMBER( sc3000_state::ppi_pa_r ) +{ + /* + Signal Description + + PA0 Keyboard input + PA1 Keyboard input + PA2 Keyboard input + PA3 Keyboard input + PA4 Keyboard input + PA5 Keyboard input + PA6 Keyboard input + PA7 Keyboard input + */ + + return m_key_row[m_keylatch]->read(); +} + +READ8_MEMBER( sc3000_state::ppi_pb_r ) +{ + /* + Signal Description + + PB0 Keyboard input + PB1 Keyboard input + PB2 Keyboard input + PB3 Keyboard input + PB4 /CONT input from cartridge terminal B-11 + PB5 FAULT input from printer + PB6 BUSY input from printer + PB7 Cassette tape input + */ + + /* keyboard */ + UINT8 data = m_key_row[m_keylatch + 8]->read(); + + /* cartridge contact */ + data |= 0x10; + + /* printer */ + data |= 0x60; + + /* tape input */ + if (m_cassette->input() > +0.0) data |= 0x80; + + return data; +} + +WRITE8_MEMBER( sc3000_state::ppi_pc_w ) +{ + /* + Signal Description + + PC0 Keyboard raster output + PC1 Keyboard raster output + PC2 Keyboard raster output + PC3 not connected + PC4 Cassette tape output + PC5 DATA to printer + PC6 /RESET to printer + PC7 /FEED to printer + */ + + /* keyboard */ + m_keylatch = data & 0x07; + + /* cassette */ + m_cassette->output( BIT(data, 4) ? +1.0 : -1.0); + + /* TODO printer */ +} + +/*------------------------------------------------- + I8255 INTERFACE +-------------------------------------------------*/ + +WRITE_LINE_MEMBER( sf7000_state::write_centronics_busy ) +{ + m_centronics_busy = state; +} + +READ8_MEMBER( sf7000_state::ppi_pa_r ) +{ + /* + Signal Description + + PA0 INT from FDC + PA1 BUSY from Centronics printer + PA2 INDEX from FDD + PA3 + PA4 + PA5 + PA6 + PA7 + */ + + UINT8 data = 0; + + data |= m_fdc->get_irq() ? 0x01 : 0x00; + data |= m_centronics_busy << 1; + data |= m_floppy0->idx_r() << 2; + + return data; +} + +WRITE8_MEMBER( sf7000_state::ppi_pc_w ) +{ + /* + Signal Description + + PC0 /INUSE signal to FDD + PC1 /MOTOR ON signal to FDD + PC2 TC signal to FDC + PC3 RESET signal to FDC + PC4 not connected + PC5 not connected + PC6 /ROM SEL (switch between IPL ROM and RAM) + PC7 /STROBE to Centronics printer + */ + + if (!BIT(data, 0)) + m_fdc->set_floppy(m_floppy0); + else + m_fdc->set_floppy(NULL); + + /* floppy motor */ + m_floppy0->mon_w(BIT(data, 1)); + + /* FDC terminal count */ + m_fdc->tc_w(BIT(data, 2)); + + /* FDC reset */ + if (BIT(data, 3)) + { + m_fdc->reset(); + } + + /* ROM selection */ + membank("bank1")->set_entry(BIT(data, 6)); + + /* printer strobe */ + m_centronics->write_strobe(BIT(data, 7)); +} + +/*------------------------------------------------- + upd765_interface sf7000_upd765_interface +-------------------------------------------------*/ + +FLOPPY_FORMATS_MEMBER( sf7000_state::floppy_formats ) + FLOPPY_SF7000_FORMAT +FLOPPY_FORMATS_END + +/*------------------------------------------------- + floppy_interface sf7000_floppy_interface +-------------------------------------------------*/ + +static SLOT_INTERFACE_START( sf7000_floppies ) + SLOT_INTERFACE( "3ssdd", FLOPPY_3_SSDD ) +SLOT_INTERFACE_END + +/*------------------------------------------------- + MACHINE_START( sg1000 ) +-------------------------------------------------*/ + +void sg1000_state::machine_start() +{ + if (m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB) + { + m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, 0, 0, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, 0, 0, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart)); + } + + if (m_cart) + m_cart->save_ram(); +} + +/*------------------------------------------------- + MACHINE_START( sc3000 ) +-------------------------------------------------*/ + +void sc3000_state::machine_start() +{ + /* toggle light gun crosshair */ + timer_set(attotime::zero, TIMER_LIGHTGUN_TICK); + + // find keyboard rows + m_key_row[0] = m_pa0; + m_key_row[1] = m_pa1; + m_key_row[2] = m_pa2; + m_key_row[3] = m_pa3; + m_key_row[4] = m_pa4; + m_key_row[5] = m_pa5; + m_key_row[6] = m_pa6; + m_key_row[7] = m_pa7; + m_key_row[8] = m_pb0; + m_key_row[9] = m_pb1; + m_key_row[10] = m_pb2; + m_key_row[11] = m_pb3; + m_key_row[12] = m_pb4; + m_key_row[13] = m_pb5; + m_key_row[14] = m_pb6; + m_key_row[15] = m_pb7; + + /* register for state saving */ + save_item(NAME(m_keylatch)); + + if (m_cart && m_cart->exists() && (m_cart->get_type() == SEGA8_BASIC_L3 || m_cart->get_type() == SEGA8_MUSIC_EDITOR + || m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB)) + { + m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, 0, 0, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, 0, 0, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart)); + } + + if (m_cart) + m_cart->save_ram(); +} + + +/*------------------------------------------------- + MACHINE_START( sf7000 ) +-------------------------------------------------*/ + +void sf7000_state::machine_start() +{ + sc3000_state::machine_start(); + + save_item(NAME(m_centronics_busy)); + + /* configure memory banking */ + membank("bank1")->configure_entry(0, m_rom->base()); + membank("bank1")->configure_entry(1, m_ram->pointer()); + membank("bank2")->configure_entry(0, m_ram->pointer()); +} + +void sf7000_state::machine_reset() +{ + membank("bank1")->set_entry(0); + membank("bank2")->set_entry(0); +} + +/*************************************************************************** + MACHINE DRIVERS +***************************************************************************/ + +/*------------------------------------------------- + MACHINE_CONFIG_START( sg1000, sg1000_state ) +-------------------------------------------------*/ + +static MACHINE_CONFIG_START( sg1000, sg1000_state ) + /* basic machine hardware */ + MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) + MCFG_CPU_PROGRAM_MAP(sg1000_map) + MCFG_CPU_IO_MAP(sg1000_io_map) + + /* video hardware */ + MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) + MCFG_TMS9928A_VRAM_SIZE(0x4000) + MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt)) + MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) + MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + + MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + + /* cartridge */ + MCFG_SG1000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL) + + /* software lists */ + MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000") + + /* internal ram */ + MCFG_RAM_ADD(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("1K") +MACHINE_CONFIG_END + +/*------------------------------------------------- + MACHINE_CONFIG_DERIVED( omv, sg1000 ) +-------------------------------------------------*/ + +static MACHINE_CONFIG_DERIVED( omv, sg1000 ) + MCFG_CPU_MODIFY(Z80_TAG) + MCFG_CPU_PROGRAM_MAP(omv_map) + MCFG_CPU_IO_MAP(omv_io_map) + + MCFG_DEVICE_REMOVE(CARTSLOT_TAG) + MCFG_OMV_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL) + + MCFG_RAM_MODIFY(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("2K") +MACHINE_CONFIG_END + +/*------------------------------------------------- + MACHINE_CONFIG_START( sc3000, sc3000_state ) +-------------------------------------------------*/ + +static MACHINE_CONFIG_START( sc3000, sc3000_state ) + /* basic machine hardware */ + MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) // LH0080A + MCFG_CPU_PROGRAM_MAP(sc3000_map) + MCFG_CPU_IO_MAP(sc3000_io_map) + + /* video hardware */ + MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) + MCFG_TMS9928A_VRAM_SIZE(0x4000) + MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt)) + MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) + MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + + MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + + /* devices */ + MCFG_DEVICE_ADD(UPD9255_TAG, I8255, 0) + MCFG_I8255_IN_PORTA_CB(READ8(sc3000_state, ppi_pa_r)) + MCFG_I8255_IN_PORTB_CB(READ8(sc3000_state, ppi_pb_r)) + MCFG_I8255_OUT_PORTC_CB(WRITE8(sc3000_state, ppi_pc_w)) + +// MCFG_PRINTER_ADD("sp400") /* serial printer */ + + MCFG_CASSETTE_ADD("cassette") + MCFG_CASSETTE_FORMATS(sc3000_cassette_formats) + MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED) + MCFG_CASSETTE_INTERFACE("sc3000_cass") + + /* cartridge */ + MCFG_SC3000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL) + + /* software lists */ + MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000") + MCFG_SOFTWARE_LIST_ADD("sc3k_cart_list","sc3000_cart") + MCFG_SOFTWARE_LIST_ADD("cass_list","sc3000_cass") + + /* internal ram */ + MCFG_RAM_ADD(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("2K") +MACHINE_CONFIG_END + +/*------------------------------------------------- + MACHINE_CONFIG_START( sf7000, sf7000_state ) +-------------------------------------------------*/ + +static MACHINE_CONFIG_START( sf7000, sf7000_state ) + /* basic machine hardware */ + MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) + MCFG_CPU_PROGRAM_MAP(sf7000_map) + MCFG_CPU_IO_MAP(sf7000_io_map) + + /* video hardware */ + MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) + MCFG_TMS9928A_VRAM_SIZE(0x4000) + MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt)) + MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) + MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + + MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + + /* devices */ + MCFG_DEVICE_ADD(UPD9255_0_TAG, I8255, 0) + MCFG_I8255_IN_PORTA_CB(READ8(sc3000_state, ppi_pa_r)) + MCFG_I8255_IN_PORTB_CB(READ8(sc3000_state, ppi_pb_r)) + MCFG_I8255_OUT_PORTC_CB(WRITE8(sc3000_state, ppi_pc_w)) + + MCFG_DEVICE_ADD(UPD9255_1_TAG, I8255, 0) + MCFG_I8255_IN_PORTA_CB(READ8(sf7000_state, ppi_pa_r)) + MCFG_I8255_OUT_PORTB_CB(DEVWRITE8("cent_data_out", output_latch_device, write)) + MCFG_I8255_OUT_PORTC_CB(WRITE8(sf7000_state, ppi_pc_w)) + + MCFG_DEVICE_ADD(UPD8251_TAG, I8251, 0) + MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) + MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) + MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts)) + + MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL) + MCFG_RS232_RXD_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_rxd)) + MCFG_RS232_DSR_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_dsr)) + + MCFG_UPD765A_ADD(UPD765_TAG, false, false) + MCFG_FLOPPY_DRIVE_ADD(UPD765_TAG ":0", sf7000_floppies, "3ssdd", sf7000_state::floppy_formats) + + MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") + + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") + + MCFG_CASSETTE_ADD("cassette") + MCFG_CASSETTE_FORMATS(sc3000_cassette_formats) + MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED) + MCFG_CASSETTE_INTERFACE("sc3000_cass") + + /* software lists */ + MCFG_SOFTWARE_LIST_ADD("flop_list","sf7000") + + /* internal ram */ + MCFG_RAM_ADD(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("64K") +MACHINE_CONFIG_END + +/*************************************************************************** + ROMS +***************************************************************************/ + +ROM_START( sg1000 ) + ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) +ROM_END + +#define rom_sg1000m2 rom_sg1000 + +#define rom_sc3000 rom_sg1000 + +#define rom_sc3000h rom_sg1000 + +ROM_START( sf7000 ) + ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) + ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(d76810b8) SHA1(77339a6db2593aadc638bed77b8e9bed5d9d87e3) ) +ROM_END + +ROM_START( omv1000 ) + ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) + ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, BAD_DUMP CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) ) // The BIOS comes from a Multivision FG-2000. It is still unknown if the FG-1000 BIOS differs +ROM_END + +ROM_START( omv2000 ) + ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) + ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) ) +ROM_END + +/*************************************************************************** + SYSTEM DRIVERS +***************************************************************************/ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +CONS( 1983, sg1000, 0, 0, sg1000, sg1000, driver_device, 0, "Sega", "SG-1000", MACHINE_SUPPORTS_SAVE ) +CONS( 1984, sg1000m2, sg1000, 0, sc3000, sc3000, driver_device, 0, "Sega", "SG-1000 II", MACHINE_SUPPORTS_SAVE ) +COMP( 1983, sc3000, 0, sg1000, sc3000, sc3000, driver_device, 0, "Sega", "SC-3000", MACHINE_SUPPORTS_SAVE ) +COMP( 1983, sc3000h, sc3000, 0, sc3000, sc3000, driver_device, 0, "Sega", "SC-3000H", MACHINE_SUPPORTS_SAVE ) +COMP( 1983, sf7000, sc3000, 0, sf7000, sf7000, driver_device, 0, "Sega", "SC-3000/Super Control Station SF-7000", MACHINE_SUPPORTS_SAVE ) +CONS( 1984, omv1000, sg1000, 0, omv, omv, driver_device, 0, "Tsukuda Original", "Othello Multivision FG-1000", MACHINE_SUPPORTS_SAVE ) +CONS( 1984, omv2000, sg1000, 0, omv, omv, driver_device, 0, "Tsukuda Original", "Othello Multivision FG-2000", MACHINE_SUPPORTS_SAVE ) |