diff options
Diffstat (limited to 'src/mame/drivers/odyssey2.cpp')
-rw-r--r-- | src/mame/drivers/odyssey2.cpp | 833 |
1 files changed, 833 insertions, 0 deletions
diff --git a/src/mame/drivers/odyssey2.cpp b/src/mame/drivers/odyssey2.cpp new file mode 100644 index 00000000000..f7b945fecbd --- /dev/null +++ b/src/mame/drivers/odyssey2.cpp @@ -0,0 +1,833 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol +/*************************************************************************** + + /drivers/odyssey2.c + + Driver file to handle emulation of the Odyssey2. + + Minor update to "the voice" rom names, and add comment about + the older revision of "the voice" - LN, 10/03/08 + +***************************************************************************/ + +#include "emu.h" +#include "cpu/mcs48/mcs48.h" +#include "video/i8244.h" +#include "machine/i8243.h" +#include "video/ef9340_1.h" + +#include "bus/odyssey2/slot.h" +#include "softlist.h" + +class odyssey2_state : public driver_device +{ +public: + odyssey2_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_i8244(*this, "i8244"), + m_cart(*this, "cartslot"), + m_keyboard(*this, "KEY"), + m_joysticks(*this, "JOY") { } + + required_device<cpu_device> m_maincpu; + required_device<i8244_device> m_i8244; + required_device<o2_cart_slot_device> m_cart; + + UINT8 m_ram[256]; + UINT8 m_p1; + UINT8 m_p2; + UINT8 m_lum; + DECLARE_READ8_MEMBER(io_read); + DECLARE_WRITE8_MEMBER(io_write); + DECLARE_READ8_MEMBER(bus_read); + DECLARE_WRITE8_MEMBER(bus_write); + DECLARE_READ8_MEMBER(p1_read); + DECLARE_WRITE8_MEMBER(p1_write); + DECLARE_READ8_MEMBER(p2_read); + DECLARE_WRITE8_MEMBER(p2_write); + DECLARE_READ8_MEMBER(t1_read); + DECLARE_DRIVER_INIT(odyssey2); + virtual void machine_start(); + virtual void machine_reset(); + DECLARE_PALETTE_INIT(odyssey2); + UINT32 screen_update_odyssey2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + DECLARE_WRITE_LINE_MEMBER(irq_callback); + + DECLARE_WRITE16_MEMBER(scanline_postprocess); + +protected: + /* constants */ + static const UINT8 P1_BANK_LO_BIT = 0x01; + static const UINT8 P1_BANK_HI_BIT = 0x02; + static const UINT8 P1_KEYBOARD_SCAN_ENABLE = 0x04; /* active low */ + static const UINT8 P1_VDC_ENABLE = 0x08; /* active low */ + static const UINT8 P1_EXT_RAM_ENABLE = 0x10; /* active low */ + static const UINT8 P1_VPP_ENABLE = 0x20; /* active low */ + static const UINT8 P1_VDC_COPY_MODE_ENABLE = 0x40; + static const UINT8 P2_KEYBOARD_SELECT_MASK = 0x07; /* select row to scan */ + + required_ioport_array<6> m_keyboard; + required_ioport_array<2> m_joysticks; +}; + +class g7400_state : public odyssey2_state +{ +public: + g7400_state(const machine_config &mconfig, device_type type, const char *tag) + : odyssey2_state(mconfig, type, tag) + , m_i8243(*this, "i8243") + , m_ef9340_1(*this, "ef9340_1") + { } + + required_device<i8243_device> m_i8243; + required_device<ef9340_1_device> m_ef9340_1; + + DECLARE_PALETTE_INIT(g7400); + virtual void machine_start(); + virtual void machine_reset(); + DECLARE_WRITE8_MEMBER(p2_write); + DECLARE_READ8_MEMBER(io_read); + DECLARE_WRITE8_MEMBER(io_write); + DECLARE_WRITE8_MEMBER(i8243_port_w); + DECLARE_WRITE16_MEMBER(scanline_postprocess); + +protected: + UINT8 m_ic674_decode[8]; + UINT8 m_ic678_decode[8]; +}; + + +static ADDRESS_MAP_START( odyssey2_mem , AS_PROGRAM, 8, odyssey2_state ) + AM_RANGE(0x0000, 0x03ff) AM_ROM + AM_RANGE(0x0400, 0x0bff) AM_DEVREAD("cartslot", o2_cart_slot_device, read_rom04) + AM_RANGE(0x0c00, 0x0fff) AM_DEVREAD("cartslot", o2_cart_slot_device, read_rom0c) +ADDRESS_MAP_END + + +static ADDRESS_MAP_START( odyssey2_io , AS_IO, 8, odyssey2_state ) + AM_RANGE(0x00, 0xff) AM_READWRITE(io_read, io_write) + AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(p1_read, p1_write) + AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_READWRITE(p2_read, p2_write) + AM_RANGE(MCS48_PORT_BUS, MCS48_PORT_BUS) AM_READWRITE(bus_read, bus_write) + AM_RANGE(MCS48_PORT_T0, MCS48_PORT_T0) AM_DEVREAD("cartslot", o2_cart_slot_device, t0_read) + AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1) AM_READ(t1_read) +ADDRESS_MAP_END + + +static ADDRESS_MAP_START( g7400_io , AS_IO, 8, g7400_state ) + AM_RANGE(0x00, 0xff) AM_READWRITE(io_read, io_write) + AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(p1_read, p1_write) + AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_READWRITE(p2_read, p2_write) + AM_RANGE(MCS48_PORT_BUS, MCS48_PORT_BUS) AM_READWRITE(bus_read, bus_write) + AM_RANGE(MCS48_PORT_T0, MCS48_PORT_T0) AM_DEVREAD("cartslot", o2_cart_slot_device, t0_read) + AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1) AM_READ(t1_read) + AM_RANGE(MCS48_PORT_PROG, MCS48_PORT_PROG) AM_DEVWRITE("i8243", i8243_device, i8243_prog_w); +ADDRESS_MAP_END + + +static INPUT_PORTS_START( odyssey2 ) + PORT_START("KEY.0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') + + PORT_START("KEY.1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("?? :") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("?? $") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('?') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') + + PORT_START("KEY.2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR('+') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') + + PORT_START("KEY.3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') + + PORT_START("KEY.4") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') + + PORT_START("KEY.5") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR('*') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR('/') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(DEF_STR( Yes )) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(DEF_STR( No )) PORT_CODE(KEYCODE_N) PORT_CHAR('N') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CLR") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ENT") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r') + + PORT_START("JOY.0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(1) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(1) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(1) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1) + PORT_BIT( 0xe0, 0xe0, IPT_UNUSED ) + + PORT_START("JOY.1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2) + PORT_BIT( 0xe0, 0xe0, IPT_UNUSED ) +INPUT_PORTS_END + + +/* character sprite colors + dark grey, red, green, yellow, blue, violet, light grey, white + dark back / grid colors + black, dark blue, dark green, light green, red, violet, yellow, light grey + light back / grid colors + black, blue, green, light green, red, violet, yellow, light grey */ + +const UINT8 odyssey2_colors[] = +{ + /* Background,Grid Dim */ + 0x00,0x00,0x00, /* Black */ // i r g b + 0x1A,0x37,0xBE, /* Blue - Calibrated To Real VideoPac */ // i r g B + 0x00,0x6D,0x07, /* Green - Calibrated To Real VideoPac */ // i r G b + 0x2A,0xAA,0xBE, /* Blue-Green - Calibrated To Real VideoPac */ // i r G B + 0x79,0x00,0x00, /* Red - Calibrated To Real VideoPac */ // i R g b + 0x94,0x30,0x9F, /* Violet - Calibrated To Real VideoPac */ // i R g B + 0x77,0x67,0x0B, /* Khaki - Calibrated To Real VideoPac */ // i R g B + 0xCE,0xCE,0xCE, /* Lt Grey */ // i R G B + + /* Background,Grid Bright */ + 0x67,0x67,0x67, /* Grey - Calibrated To Real VideoPac */ // I R g B + 0x5C,0x80,0xF6, /* Lt Blue - Calibrated To Real VideoPac */ // I R g B + 0x56,0xC4,0x69, /* Lt Green - Calibrated To Real VideoPac */ // I R g B + 0x77,0xE6,0xEB, /* Lt Blue-Green - Calibrated To Real VideoPac */ // I R g b + 0xC7,0x51,0x51, /* Lt Red - Calibrated To Real VideoPac */ // I R g b + 0xDC,0x84,0xE8, /* Lt Violet - Calibrated To Real VideoPac */ // I R g B + 0xC6,0xB8,0x6A, /* Lt Yellow - Calibrated To Real VideoPac */ // I R G b + 0xFF,0xFF,0xFF, /* White */ // I R G B +}; + + +PALETTE_INIT_MEMBER(odyssey2_state, odyssey2) +{ + for ( int i = 0; i < 16; i++ ) + { + palette.set_pen_color( i, odyssey2_colors[i*3], odyssey2_colors[i*3+1], odyssey2_colors[i*3+2] ); + } +} + + +PALETTE_INIT_MEMBER(g7400_state, g7400) +{ + const UINT8 g7400_colors[] = + { + 0x00,0x00,0x00, // Black + 0x1A,0x37,0xBE, // Blue + 0x00,0x6D,0x07, // Green + 0x2A,0xAA,0xBE, // Blue-Green + 0x79,0x00,0x00, // Red + 0x94,0x30,0x9F, // Violet + 0x77,0x67,0x0B, // Khaki + 0xCE,0xCE,0xCE, // Lt Grey + + 0x67,0x67,0x67, // Grey + 0x5C,0x80,0xF6, // Lt Blue + 0x56,0xC4,0x69, // Lt Green + 0x77,0xE6,0xEB, // Lt Blue-Green + 0xC7,0x51,0x51, // Lt Red + 0xDC,0x84,0xE8, // Lt Violet + 0xC6,0xB8,0x6A, // Lt Yellow + 0xff,0xff,0xff // White + + }; + + for ( int i = 0; i < 16; i++ ) + { + palette.set_pen_color( i, g7400_colors[i*3], g7400_colors[i*3+1], g7400_colors[i*3+2] ); + } +} + + +WRITE_LINE_MEMBER(odyssey2_state::irq_callback) +{ + m_maincpu->set_input_line(0, state); +} + + +DRIVER_INIT_MEMBER(odyssey2_state,odyssey2) +{ + UINT8 *gfx = memregion("gfx1")->base(); + + for (int i = 0; i < 256; i++) + { + gfx[i] = i; /* TODO: Why i and not 0? */ + m_ram[i] = 0; + } +} + + +void odyssey2_state::machine_start() +{ + save_pointer(NAME(m_ram),256); + save_item(NAME(m_p1)); + save_item(NAME(m_p2)); + save_item(NAME(m_lum)); +} + + +void odyssey2_state::machine_reset() +{ + m_lum = 0; + + /* jump to "last" bank, will work for all sizes due to being mirrored */ + m_p1 = 0xff; + m_p2 = 0xff; + m_cart->write_bank(m_p1); +} + + +void g7400_state::machine_start() +{ + odyssey2_state::machine_start(); + + save_pointer(NAME(m_ic674_decode),8); + save_pointer(NAME(m_ic678_decode),8); +} + + +void g7400_state::machine_reset() +{ + odyssey2_state::machine_reset(); + + for ( int i = 0; i < 8; i++ ) + { + m_ic674_decode[i] = 0; + m_ic678_decode[i] = 0; + } +} + +/****** External RAM ******************************/ + +READ8_MEMBER(odyssey2_state::io_read) +{ + if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0) + { + return m_i8244->read(space, offset); + } + if (!(m_p1 & P1_EXT_RAM_ENABLE)) + { + return m_ram[offset]; + } + + return 0; +} + + +WRITE8_MEMBER(odyssey2_state::io_write) +{ + if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00) + { + m_ram[offset] = data; + if (offset & 0x80) + { + logerror("voice write %02X, data = %02X (p1 = %02X)\n", offset, data, m_p1); + m_cart->io_write(space, offset, data); + } + } + else if (!(m_p1 & P1_VDC_ENABLE)) + { + m_i8244->write(space, offset, data); + } +} + + +READ8_MEMBER(g7400_state::io_read) +{ + if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0) + { + return m_i8244->read(space, offset); + } + else if (!(m_p1 & P1_EXT_RAM_ENABLE)) + { + return m_ram[offset]; + } + else if (!(m_p1 & P1_VPP_ENABLE)) + { + return m_ef9340_1->ef9341_read( offset & 0x02, offset & 0x01 ); + } + + return 0; +} + + +WRITE8_MEMBER(g7400_state::io_write) +{ + if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00) + { + m_ram[offset] = data; + if (offset & 0x80) + { + logerror("voice write %02X, data = %02X (p1 = %02X)\n", offset, data, m_p1); + m_cart->io_write(space, offset, data); + } + } + else if (!(m_p1 & P1_VDC_ENABLE)) + { + m_i8244->write(space, offset, data); + } + else if (!(m_p1 & P1_VPP_ENABLE)) + { + m_ef9340_1->ef9341_write( offset & 0x02, offset & 0x01, data ); + } +} + + +WRITE16_MEMBER(odyssey2_state::scanline_postprocess) +{ + int vpos = data; + bitmap_ind16 *bitmap = m_i8244->get_bitmap(); + + if ( vpos < i8244_device::START_Y || vpos >= i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + { + return; + } + + // apply external LUM setting + for ( int x = i8244_device::START_ACTIVE_SCAN; x < i8244_device::END_ACTIVE_SCAN; x++ ) + { + bitmap->pix16( vpos, x ) |= ( m_lum ^ 0x08 ); + } +} + + +WRITE16_MEMBER(g7400_state::scanline_postprocess) +{ + int vpos = data; + int y = vpos - i8244_device::START_Y - 5; + bitmap_ind16 *bitmap = m_i8244->get_bitmap(); + bitmap_ind16 *ef934x_bitmap = m_ef9340_1->get_bitmap(); + + if ( vpos < i8244_device::START_Y || vpos >= i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + { + return; + } + + // apply external LUM setting + int x_real_start = i8244_device::START_ACTIVE_SCAN + i8244_device::BORDER_SIZE + 5; + int x_real_end = i8244_device::END_ACTIVE_SCAN - i8244_device::BORDER_SIZE + 5; + for ( int x = i8244_device::START_ACTIVE_SCAN; x < i8244_device::END_ACTIVE_SCAN; x++ ) + { + UINT16 d = bitmap->pix16( vpos, x ); + + if ( ( ! m_ic678_decode[ d & 0x07 ] ) && x >= x_real_start && x < x_real_end && y >= 0 && y < 240 ) + { + // Use EF934x input + d = ef934x_bitmap->pix16( y, x - x_real_start ) & 0x07; + + if ( ! m_ic674_decode[ d & 0x07 ] ) + { + d |= 0x08; + } + } + else + { + // Use i8245 input + d |= ( m_lum ^ 0x08 ); + } + bitmap->pix16( vpos, x ) = d; + } +} + + +UINT32 odyssey2_state::screen_update_odyssey2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +{ + return m_i8244->screen_update(screen, bitmap, cliprect); +} + + +READ8_MEMBER(odyssey2_state::t1_read) +{ + if ( m_i8244->vblank() || m_i8244->hblank() ) + { + return 1; + } + return 0; +} + + +READ8_MEMBER(odyssey2_state::p1_read) +{ + UINT8 data = m_p1; + + return data; +} + + +WRITE8_MEMBER(odyssey2_state::p1_write) +{ + m_p1 = data; + m_lum = ( data & 0x80 ) >> 4; + m_cart->write_bank(m_p1); +} + + +READ8_MEMBER(odyssey2_state::p2_read) +{ + UINT8 h = 0xFF; + int i, j; + + if (!(m_p1 & P1_KEYBOARD_SCAN_ENABLE)) + { + if ((m_p2 & P2_KEYBOARD_SELECT_MASK) <= 5) /* read keyboard */ + { + h &= m_keyboard[m_p2 & P2_KEYBOARD_SELECT_MASK]->read(); + } + + for (i= 0x80, j = 0; i > 0; i >>= 1, j++) + { + if (!(h & i)) + { + m_p2 &= ~0x10; /* set key was pressed indicator */ + m_p2 = (m_p2 & ~0xE0) | (j << 5); /* column that was pressed */ + + break; + } + } + + if (h == 0xFF) /* active low inputs, so no keypresses */ + { + m_p2 = m_p2 | 0xF0; + } + } + else + { + m_p2 = m_p2 | 0xF0; + } + + return m_p2; +} + + +WRITE8_MEMBER(odyssey2_state::p2_write) +{ + m_p2 = data; +} + + +WRITE8_MEMBER(g7400_state::p2_write) +{ + m_p2 = data; + m_i8243->i8243_p2_w( space, 0, m_p2 & 0x0f ); +} + + +READ8_MEMBER(odyssey2_state::bus_read) +{ + UINT8 data = 0xff; + + if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 1) + { + data &= m_joysticks[0]->read(); + } + + if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 0) + { + data &= m_joysticks[1]->read(); + } + + return data; +} + + +WRITE8_MEMBER(odyssey2_state::bus_write) +{ + logerror("%.6f bus written %.2x\n", machine().time().as_double(), data); +} + + +/* + i8243 in the g7400 +*/ + +WRITE8_MEMBER(g7400_state::i8243_port_w) +{ + switch ( offset & 3 ) + { + case 0: // "port 4" +logerror("setting ef-port4 to %02x\n", data); + m_ic674_decode[4] = BIT(data,0); + m_ic674_decode[5] = BIT(data,1); + m_ic674_decode[6] = BIT(data,2); + m_ic674_decode[7] = BIT(data,3); + break; + + case 1: // "port 5" +logerror("setting ef-port5 to %02x\n", data); + m_ic674_decode[0] = BIT(data,0); + m_ic674_decode[1] = BIT(data,1); + m_ic674_decode[2] = BIT(data,2); + m_ic674_decode[3] = BIT(data,3); + break; + + case 2: // "port 6" +logerror("setting vdc-port6 to %02x\n", data); + m_ic678_decode[4] = BIT(data,0); + m_ic678_decode[5] = BIT(data,1); + m_ic678_decode[6] = BIT(data,2); + m_ic678_decode[7] = BIT(data,3); + break; + + case 3: // "port 7" +logerror("setting vdc-port7 to %02x\n", data); + m_ic678_decode[0] = BIT(data,0); + m_ic678_decode[1] = BIT(data,1); + m_ic678_decode[2] = BIT(data,2); + m_ic678_decode[3] = BIT(data,3); + break; + + } +} + + +static const gfx_layout odyssey2_graphicslayout = +{ + 8,1, + 256, /* 256 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes; 1 bit per pixel */ + /* x offsets */ + { + 0, + 1, + 2, + 3, + 4, + 5, + 6, + 7, + }, + /* y offsets */ + { 0 }, + 1*8 +}; + + +static const gfx_layout odyssey2_spritelayout = +{ + 8,1, + 256, /* 256 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes; 1 bit per pixel */ + /* x offsets */ + { + 7,6,5,4,3,2,1,0 + }, + /* y offsets */ + { 0 }, + 1*8 +}; + + +static GFXDECODE_START( odyssey2 ) + GFXDECODE_ENTRY( "gfx1", 0x0000, odyssey2_graphicslayout, 0, 2 ) + GFXDECODE_ENTRY( "gfx1", 0x0000, odyssey2_spritelayout, 0, 2 ) +GFXDECODE_END + + + +static MACHINE_CONFIG_FRAGMENT( odyssey2_cartslot ) + MCFG_O2_CARTRIDGE_ADD("cartslot", o2_cart, NULL) + + MCFG_SOFTWARE_LIST_ADD("cart_list","odyssey2") +MACHINE_CONFIG_END + + +static MACHINE_CONFIG_START( odyssey2, odyssey2_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8048, ( ( XTAL_7_15909MHz * 3 ) / 4 ) ) + MCFG_CPU_PROGRAM_MAP(odyssey2_mem) + MCFG_CPU_IO_MAP(odyssey2_io) + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS( XTAL_7_15909MHz/2 * 2, i8244_device::LINE_CLOCKS, i8244_device::START_ACTIVE_SCAN, i8244_device::END_ACTIVE_SCAN, i8244_device::LINES, i8244_device::START_Y, i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + MCFG_SCREEN_UPDATE_DRIVER(odyssey2_state, screen_update_odyssey2) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", odyssey2 ) + MCFG_PALETTE_ADD("palette", 32) + MCFG_PALETTE_INIT_OWNER(odyssey2_state, odyssey2) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_I8244_ADD( "i8244", XTAL_7_15909MHz/2 * 2, "screen", WRITELINE( odyssey2_state, irq_callback ), WRITE16( odyssey2_state, scanline_postprocess ) ) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40) + + MCFG_FRAGMENT_ADD(odyssey2_cartslot) +MACHINE_CONFIG_END + + +static MACHINE_CONFIG_START( videopac, odyssey2_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8048, ( XTAL_17_73447MHz / 3 ) ) + MCFG_CPU_PROGRAM_MAP(odyssey2_mem) + MCFG_CPU_IO_MAP(odyssey2_io) + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS( XTAL_17_73447MHz/5 * 2, i8244_device::LINE_CLOCKS, i8244_device::START_ACTIVE_SCAN, i8244_device::END_ACTIVE_SCAN, i8245_device::LINES, i8244_device::START_Y, i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + MCFG_SCREEN_UPDATE_DRIVER(odyssey2_state, screen_update_odyssey2) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", odyssey2 ) + MCFG_PALETTE_ADD("palette", 16) + MCFG_PALETTE_INIT_OWNER(odyssey2_state, odyssey2) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_I8245_ADD( "i8244", XTAL_17_73447MHz/5 * 2, "screen", WRITELINE( odyssey2_state, irq_callback ), WRITE16( odyssey2_state, scanline_postprocess ) ) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40) + + MCFG_FRAGMENT_ADD(odyssey2_cartslot) +MACHINE_CONFIG_END + + +static MACHINE_CONFIG_START( g7400, g7400_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8048, XTAL_5_911MHz ) + MCFG_CPU_PROGRAM_MAP(odyssey2_mem) + MCFG_CPU_IO_MAP(g7400_io) + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS( 3540000 * 2, i8244_device::LINE_CLOCKS, i8244_device::START_ACTIVE_SCAN, i8244_device::END_ACTIVE_SCAN, i8245_device::LINES, i8244_device::START_Y, i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + MCFG_SCREEN_UPDATE_DRIVER(odyssey2_state, screen_update_odyssey2) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", odyssey2 ) + MCFG_PALETTE_ADD("palette", 16) + MCFG_PALETTE_INIT_OWNER(g7400_state, g7400) + + MCFG_I8243_ADD( "i8243", NOOP, WRITE8(g7400_state,i8243_port_w)) + + MCFG_EF9340_1_ADD( "ef9340_1", 3540000, "screen" ) + + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_I8245_ADD( "i8244", 3540000 * 2, "screen", WRITELINE( odyssey2_state, irq_callback ), WRITE16( g7400_state, scanline_postprocess ) ) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40) + + MCFG_FRAGMENT_ADD(odyssey2_cartslot) + MCFG_DEVICE_REMOVE("cart_list") + MCFG_SOFTWARE_LIST_ADD("cart_list","g7400") + MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("ody2_list","odyssey2") +MACHINE_CONFIG_END + + +static MACHINE_CONFIG_START( odyssey3, g7400_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8048, XTAL_5_911MHz ) + MCFG_CPU_PROGRAM_MAP(odyssey2_mem) + MCFG_CPU_IO_MAP(g7400_io) + MCFG_QUANTUM_TIME(attotime::from_hz(60)) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS( 3540000 * 2, i8244_device::LINE_CLOCKS, i8244_device::START_ACTIVE_SCAN, i8244_device::END_ACTIVE_SCAN, i8244_device::LINES, i8244_device::START_Y, i8244_device::START_Y + i8244_device::SCREEN_HEIGHT ) + MCFG_SCREEN_UPDATE_DRIVER(odyssey2_state, screen_update_odyssey2) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", odyssey2 ) + MCFG_PALETTE_ADD("palette", 16) + MCFG_PALETTE_INIT_OWNER(g7400_state, g7400) + + MCFG_I8243_ADD( "i8243", NOOP, WRITE8(g7400_state,i8243_port_w)) + + MCFG_EF9340_1_ADD( "ef9340_1", 3540000, "screen" ) + + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_I8244_ADD( "i8244", 3540000 * 2, "screen", WRITELINE( odyssey2_state, irq_callback ), WRITE16( g7400_state, scanline_postprocess ) ) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40) + + MCFG_FRAGMENT_ADD(odyssey2_cartslot) + MCFG_DEVICE_REMOVE("cart_list") + MCFG_SOFTWARE_LIST_ADD("cart_list","g7400") + MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("ody2_list","odyssey2") +MACHINE_CONFIG_END + + +ROM_START (odyssey2) + ROM_REGION(0x10000,"maincpu",0) /* safer for the memory handler/bankswitching??? */ + ROM_LOAD ("o2bios.rom", 0x0000, 0x0400, CRC(8016a315) SHA1(b2e1955d957a475de2411770452eff4ea19f4cee)) + ROM_REGION(0x100, "gfx1", ROMREGION_ERASEFF) +ROM_END + + +ROM_START (videopac) + ROM_REGION(0x10000,"maincpu",0) /* safer for the memory handler/bankswitching??? */ + ROM_SYSTEM_BIOS( 0, "g7000", "g7000" ) + ROMX_LOAD ("o2bios.rom", 0x0000, 0x0400, CRC(8016a315) SHA1(b2e1955d957a475de2411770452eff4ea19f4cee), ROM_BIOS(1)) + ROM_SYSTEM_BIOS( 1, "c52", "c52" ) + ROMX_LOAD ("c52.bin", 0x0000, 0x0400, CRC(a318e8d6) SHA1(a6120aed50831c9c0d95dbdf707820f601d9452e), ROM_BIOS(2)) + ROM_REGION(0x100, "gfx1", ROMREGION_ERASEFF) +ROM_END + + +ROM_START (g7400) + ROM_REGION(0x10000,"maincpu",0) /* safer for the memory handler/bankswitching??? */ + ROM_LOAD ("g7400.bin", 0x0000, 0x0400, CRC(e20a9f41) SHA1(5130243429b40b01a14e1304d0394b8459a6fbae)) + ROM_REGION(0x100, "gfx1", ROMREGION_ERASEFF) +ROM_END + + +ROM_START (jopac) + ROM_REGION(0x10000,"maincpu",0) /* safer for the memory handler/bankswitching??? */ + ROM_LOAD ("jopac.bin", 0x0000, 0x0400, CRC(11647ca5) SHA1(54b8d2c1317628de51a85fc1c424423a986775e4)) + ROM_REGION(0x100, "gfx1", ROMREGION_ERASEFF) +ROM_END + + +ROM_START (odyssey3) + ROM_REGION(0x10000, "maincpu", 0) + ROM_LOAD ("odyssey3.bin", 0x0000, 0x0400, CRC(e2b23324) SHA1(0a38c5f2cea929d2fe0a23e5e1a60de9155815dc)) + + ROM_REGION(0x100, "gfx1", ROMREGION_ERASEFF) +ROM_END + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1978, odyssey2, 0, 0, odyssey2, odyssey2, odyssey2_state, odyssey2, "Magnavox", "Odyssey 2", 0 ) +COMP( 1979, videopac, odyssey2, 0, videopac, odyssey2, odyssey2_state, odyssey2, "Philips", "Videopac G7000/C52", 0 ) +COMP( 1983, g7400, odyssey2, 0, g7400, odyssey2, odyssey2_state, odyssey2, "Philips", "Videopac Plus G7400", MACHINE_IMPERFECT_GRAPHICS ) +COMP( 1983, jopac, odyssey2, 0, g7400, odyssey2, odyssey2_state, odyssey2, "Brandt", "Jopac JO7400", MACHINE_IMPERFECT_GRAPHICS ) +COMP( 1983, odyssey3, odyssey2, 0, odyssey3, odyssey2, odyssey2_state, odyssey2, "Magnavox", "Odyssey 3 Command Center (prototype)", MACHINE_IMPERFECT_GRAPHICS ) |