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+// license:BSD-3-Clause
+// copyright-holders:Mike Balfour, Ben Bruscella, Sean Young
+/*******************************************************************************************************
+
+ coleco.c
+
+ Driver file to handle emulation of the ColecoVision.
+
+ Marat Fayzullin (ColEm source)
+ Marcel de Kogel (AdamEm source)
+ Mike Balfour
+ Ben Bruscella
+ Sean Young
+
+ NEWS:
+ - Modified memory map, now it has only 1k of RAM mapped on 8k Slot
+ - Modified I/O map, now it is handled as on a real ColecoVision:
+ The I/O map is broken into 4 write and 4 read ports:
+ 80-9F (W) = Set both controllers to keypad mode
+ 80-9F (R) = Not Connected
+
+ A0-BF (W) = Video Chip (TMS9928A), A0=0 -> Write Register 0 , A0=1 -> Write Register 1
+ A0-BF (R) = Video Chip (TMS9928A), A0=0 -> Read Register 0 , A0=1 -> Read Register 1
+
+ C0-DF (W) = Set both controllers to joystick mode
+ C0-DF (R) = Not Connected
+
+ E0-FF (W) = Sound Chip (SN76489A)
+ E0-FF (R) = Read Controller data, A1=0 -> read controller 1, A1=1 -> read controller 2
+
+ - Modified paddle handler, now it is handled as on a real ColecoVision
+ - Added support for a Roller Controller (Trackball), enabled via category
+ - Added support for two Super Action Controller, enabled via category
+
+ EXTRA CONTROLLERS INFO:
+
+ -Driving Controller (Expansion Module #2). It consist of a steering wheel and a gas pedal. Only one
+ can be used on a real ColecoVision. The gas pedal is not analog, internally it is just a switch.
+ On a real ColecoVision, when the Driving Controller is enabled, the controller 1 do not work because
+ have been replaced by the Driving Controller, and controller 2 have to be used to start game, gear
+ shift, etc.
+ Driving Controller is just a spinner on controller 1 socket similar to the one on Roller Controller
+ and Super Action Controllers so you can use Roller Controller or Super Action Controllers to play
+ games requiring Driving Controller.
+
+ -Roller Controller. Basically a trackball with four buttons (the two fire buttons from player 1 and
+ the two fire buttons from player 2). Only one Roller Controller can be used on a real ColecoVision.
+ Roller Controller is connected to both controller sockets and both controllers are conected to the Roller
+ Controller, it uses the spinner pins of both sockets to generate the X and Y signals (X from controller 1
+ and the Y from controller 2)
+
+ -Super Action Controllers. It is a hand controller with a keypad, four buttons (the two from
+ the player pad and two more), and a spinner. This was made primarily for two player sport games, but
+ will work for every other ColecoVision game.
+
+*******************************************************************************************************/
+
+/*
+
+ TODO:
+
+ - Dina SG-1000 mode
+
+*/
+
+#include "includes/coleco.h"
+#include "softlist.h"
+
+/* Read/Write Handlers */
+
+READ8_MEMBER( coleco_state::paddle_1_r )
+{
+ return m_joy_d7_state[0] | coleco_paddle_read(0, m_joy_mode, m_joy_analog_state[0]);
+}
+
+READ8_MEMBER( coleco_state::paddle_2_r )
+{
+ return m_joy_d7_state[1] | coleco_paddle_read(1, m_joy_mode, m_joy_analog_state[1]);
+}
+
+WRITE8_MEMBER( coleco_state::paddle_off_w )
+{
+ m_joy_mode = 0;
+}
+
+WRITE8_MEMBER( coleco_state::paddle_on_w )
+{
+ m_joy_mode = 1;
+}
+
+
+/* Memory Maps */
+
+static ADDRESS_MAP_START( coleco_map, AS_PROGRAM, 8, coleco_state )
+ AM_RANGE(0x0000, 0x1fff) AM_ROM
+ AM_RANGE(0x6000, 0x63ff) AM_RAM AM_MIRROR(0x1c00) AM_SHARE("ram")
+ AM_RANGE(0x8000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( coleco_io_map, AS_IO, 8, coleco_state )
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x80, 0x80) AM_MIRROR(0x1f) AM_WRITE(paddle_off_w)
+ AM_RANGE(0xa0, 0xa0) AM_MIRROR(0x1e) AM_DEVREADWRITE("tms9928a", tms9928a_device, vram_read, vram_write)
+ AM_RANGE(0xa1, 0xa1) AM_MIRROR(0x1e) AM_DEVREADWRITE("tms9928a", tms9928a_device, register_read, register_write)
+ AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x1f) AM_WRITE(paddle_on_w)
+ AM_RANGE(0xe0, 0xe0) AM_MIRROR(0x1f) AM_DEVWRITE("sn76489a", sn76489a_device, write)
+ AM_RANGE(0xe0, 0xe0) AM_MIRROR(0x1d) AM_READ(paddle_1_r)
+ AM_RANGE(0xe2, 0xe2) AM_MIRROR(0x1d) AM_READ(paddle_2_r)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( czz50_map, AS_PROGRAM, 8, coleco_state )
+ AM_RANGE(0x0000, 0x3fff) AM_ROM
+ AM_RANGE(0x6000, 0x63ff) AM_RAM AM_MIRROR(0x1c00) AM_SHARE("ram")
+ AM_RANGE(0x8000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+
+/* Input Ports */
+
+static INPUT_PORTS_START( czz50 )
+ PORT_START("STD_KEYPAD1")
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR('0')
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR('1')
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR('2')
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR('3')
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR('4')
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR('5')
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR('6')
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR('7')
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR('8')
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR('9')
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("#") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR('#')
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("*") PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR('*')
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
+ PORT_BIT( 0xb000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("STD_JOY1")
+ 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( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
+ PORT_BIT( 0xb0, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("STD_KEYPAD2")
+ PORT_BIT( 0x00ff, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x0f00, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
+ PORT_BIT( 0xb000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("STD_JOY2")
+ 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( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
+ PORT_BIT( 0xb0, IP_ACTIVE_LOW, IPT_UNKNOWN )
+INPUT_PORTS_END
+
+
+/* Interrupts */
+
+WRITE_LINE_MEMBER(coleco_state::coleco_vdp_interrupt)
+{
+ // NMI on rising edge
+ if (state && !m_last_nmi_state)
+ m_maincpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
+
+ m_last_nmi_state = state;
+}
+
+TIMER_CALLBACK_MEMBER(coleco_state::paddle_d7reset_callback)
+{
+ m_joy_d7_state[param] = 0;
+ m_joy_analog_state[param] = 0;
+}
+
+TIMER_CALLBACK_MEMBER(coleco_state::paddle_irqreset_callback)
+{
+ m_joy_irq_state[param] = 0;
+
+ if (!m_joy_irq_state[param ^ 1])
+ m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
+}
+
+TIMER_CALLBACK_MEMBER(coleco_state::paddle_pulse_callback)
+{
+ if (m_joy_analog_reload[param])
+ {
+ m_joy_analog_state[param] = m_joy_analog_reload[param];
+
+ // on movement, controller port d7 is set for a short period and an irq is fired on d7 rising edge
+ m_joy_d7_state[param] = 0x80;
+ m_joy_d7_timer[param]->adjust(attotime::from_usec(500), param); // TODO: measure duration
+
+ // irq on rising edge, PULSE_LINE is not supported in this case, so clear it manually
+ m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
+ m_joy_irq_timer[param]->adjust(attotime::from_usec(11), param); // TODO: measure duration
+ m_joy_irq_state[param] = 1;
+
+ // reload timer
+ m_joy_pulse_timer[param]->adjust(m_joy_pulse_reload[param], param);
+ }
+}
+
+TIMER_DEVICE_CALLBACK_MEMBER(coleco_state::paddle_update_callback)
+{
+ // arbitrary timer for reading analog controls
+ coleco_scan_paddles(&m_joy_analog_reload[0], &m_joy_analog_reload[1]);
+
+ for (int port = 0; port < 2; port++)
+ {
+ if (m_joy_analog_reload[port])
+ {
+ const int sensitivity = 500;
+ int ipt = m_joy_analog_reload[port];
+ if (ipt & 0x80) ipt = 0x100 - ipt;
+ attotime freq = attotime::from_msec(sensitivity / ipt);
+
+ // change pulse intervals relative to spinner/trackball speed
+ m_joy_pulse_reload[port] = freq;
+ m_joy_pulse_timer[port]->adjust(min(freq, m_joy_pulse_timer[port]->remaining()), port);
+ }
+ }
+}
+
+READ8_MEMBER( coleco_state::cart_r )
+{
+ return m_cart->bd_r(space, offset & 0x7fff, 0, 0, 0, 0, 0);
+}
+
+UINT8 coleco_state::coleco_scan_paddles(UINT8 *joy_status0, UINT8 *joy_status1)
+{
+ UINT8 ctrl_sel = (m_ctrlsel != NULL) ? m_ctrlsel->read() : 0;
+
+ /* which controller shall we read? */
+ if ((ctrl_sel & 0x07) == 0x02) // Super Action Controller P1
+ *joy_status0 = (m_sac_slide1 != NULL) ? m_sac_slide1->read() : 0;
+ else if ((ctrl_sel & 0x07) == 0x03) // Driving Controller P1
+ *joy_status0 = (m_driv_wheel1 != NULL) ? m_driv_wheel1->read() : 0;
+
+ if ((ctrl_sel & 0x70) == 0x20) // Super Action Controller P2
+ *joy_status1 = (m_sac_slide2 != NULL) ? m_sac_slide2->read() : 0;
+ else if ((ctrl_sel & 0x70) == 0x30) // Driving Controller P2
+ *joy_status1 = (m_driv_wheel2 != NULL) ? m_driv_wheel2->read() : 0;
+
+ /* In principle, even if not supported by any game, I guess we could have two Super
+ Action Controllers plugged into the Roller controller ports. Since I found no info
+ about the behavior of sliders in such a configuration, we overwrite SAC sliders with
+ the Roller trackball inputs and actually use the latter ones, when both are selected. */
+ if (ctrl_sel & 0x80) // Roller controller
+ {
+ *joy_status0 = (m_roller_x != NULL) ? m_roller_x->read() : 0;
+ *joy_status1 = (m_roller_y != NULL) ? m_roller_y->read() : 0;
+ }
+
+ return *joy_status0 | *joy_status1;
+}
+
+
+UINT8 coleco_state::coleco_paddle_read(int port, int joy_mode, UINT8 joy_status)
+{
+ UINT8 ctrl_sel = (m_ctrlsel != NULL ) ? m_ctrlsel->read() : 0;
+ UINT8 ctrl_extra = ctrl_sel & 0x80;
+ ctrl_sel = ctrl_sel >> (port*4) & 7;
+
+ /* Keypad and fire 1 (SAC Yellow Button) */
+ if (joy_mode == 0)
+ {
+ /* No key pressed by default */
+ UINT8 data = 0x0f;
+ UINT16 ipt = 0xffff;
+
+ if (ctrl_sel == 0) // ColecoVision Controller
+ ipt = port ? m_std_keypad2->read() : m_std_keypad1->read();
+ else if (ctrl_sel == 2) // Super Action Controller
+ ipt = port ? m_sac_keypad2->read() : m_sac_keypad1->read();
+
+ /* Numeric pad buttons are not independent on a real ColecoVision, if you push more
+ than one, a real ColecoVision think that it is a third button, so we are going to emulate
+ the right behaviour */
+ /* Super Action Controller additional buttons are read in the same way */
+ if (!(ipt & 0x0001)) data &= 0x0a; /* 0 */
+ if (!(ipt & 0x0002)) data &= 0x0d; /* 1 */
+ if (!(ipt & 0x0004)) data &= 0x07; /* 2 */
+ if (!(ipt & 0x0008)) data &= 0x0c; /* 3 */
+ if (!(ipt & 0x0010)) data &= 0x02; /* 4 */
+ if (!(ipt & 0x0020)) data &= 0x03; /* 5 */
+ if (!(ipt & 0x0040)) data &= 0x0e; /* 6 */
+ if (!(ipt & 0x0080)) data &= 0x05; /* 7 */
+ if (!(ipt & 0x0100)) data &= 0x01; /* 8 */
+ if (!(ipt & 0x0200)) data &= 0x0b; /* 9 */
+ if (!(ipt & 0x0400)) data &= 0x06; /* # */
+ if (!(ipt & 0x0800)) data &= 0x09; /* * */
+ if (!(ipt & 0x1000)) data &= 0x04; /* Blue Action Button */
+ if (!(ipt & 0x2000)) data &= 0x08; /* Purple Action Button */
+
+ return ((ipt & 0x4000) >> 8) | 0x30 | data;
+ }
+ /* Joystick and fire 2 (SAC Red Button) */
+ else
+ {
+ UINT8 data = 0x7f;
+
+ if (ctrl_sel == 0) // ColecoVision Controller
+ data = port ? m_std_joy2->read() : m_std_joy1->read();
+ else if (ctrl_sel == 2) // Super Action Controller
+ data = port ? m_sac_joy2->read() : m_sac_joy1->read();
+ else if (ctrl_sel == 3) // Driving Controller
+ data = port ? m_driv_pedal2->read() : m_driv_pedal1->read();
+
+ /* If any extra analog contoller enabled */
+ if (ctrl_extra || ctrl_sel == 2 || ctrl_sel == 3)
+ {
+ if (joy_status & 0x80) data ^= 0x30;
+ else if (joy_status) data ^= 0x10;
+ }
+
+ return data & 0x7f;
+ }
+}
+
+void coleco_state::machine_start()
+{
+ memset(m_ram, 0xff, m_ram.bytes()); // initialize RAM
+
+ // init paddles
+ for (int port = 0; port < 2; port++)
+ {
+ m_joy_pulse_timer[port] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(coleco_state::paddle_pulse_callback),this));
+ m_joy_d7_timer[port] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(coleco_state::paddle_d7reset_callback),this));
+ m_joy_irq_timer[port] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(coleco_state::paddle_irqreset_callback),this));
+
+ m_joy_irq_state[port] = 0;
+ m_joy_d7_state[port] = 0;
+ m_joy_analog_state[port] = 0;
+ }
+
+ if (m_cart->exists())
+ m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xffff, read8_delegate(FUNC(coleco_state::cart_r),this));
+
+ save_item(NAME(m_joy_mode));
+ save_item(NAME(m_last_nmi_state));
+ save_item(NAME(m_joy_irq_state));
+ save_item(NAME(m_joy_d7_state));
+ save_item(NAME(m_joy_analog_state));
+ save_item(NAME(m_joy_analog_reload));
+}
+
+void coleco_state::machine_reset()
+{
+ m_last_nmi_state = 0;
+}
+
+//static int coleco_cart_verify(const UINT8 *cartdata, size_t size)
+//{
+// int retval = IMAGE_VERIFY_FAIL;
+//
+// /* Verify the file is in Colecovision format */
+// if ((cartdata[0] == 0xAA) && (cartdata[1] == 0x55)) /* Production Cartridge */
+// retval = IMAGE_VERIFY_PASS;
+// if ((cartdata[0] == 0x55) && (cartdata[1] == 0xAA)) /* "Test" Cartridge. Some games use this method to skip ColecoVision title screen and delay */
+// retval = IMAGE_VERIFY_PASS;
+//
+// return retval;
+//}
+
+
+/* Machine Drivers */
+
+static MACHINE_CONFIG_START( coleco, coleco_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, XTAL_7_15909MHz/2) // 3.579545 MHz
+ MCFG_CPU_PROGRAM_MAP(coleco_map)
+ MCFG_CPU_IO_MAP(coleco_io_map)
+
+ /* video hardware */
+ MCFG_DEVICE_ADD( "tms9928a", TMS9928A, XTAL_10_738635MHz / 2 )
+ MCFG_TMS9928A_VRAM_SIZE(0x4000)
+ MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(coleco_state, coleco_vdp_interrupt))
+ MCFG_TMS9928A_SCREEN_ADD_NTSC( "screen" )
+ MCFG_SCREEN_UPDATE_DEVICE( "tms9928a", tms9928a_device, screen_update )
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD("sn76489a", SN76489A, XTAL_7_15909MHz/2) // 3.579545 MHz
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+
+ /* cartridge */
+ MCFG_COLECOVISION_CARTRIDGE_SLOT_ADD(COLECOVISION_CARTRIDGE_SLOT_TAG, colecovision_cartridges, NULL)
+
+ /* software lists */
+ MCFG_SOFTWARE_LIST_ADD("cart_list","coleco")
+
+ MCFG_TIMER_DRIVER_ADD_PERIODIC("paddle_timer", coleco_state, paddle_update_callback, attotime::from_msec(20))
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( colecop, coleco )
+
+ /* video hardware */
+ MCFG_DEVICE_REMOVE("tms9928a")
+ MCFG_DEVICE_REMOVE("screen")
+
+ MCFG_DEVICE_ADD( "tms9928a", TMS9929A, XTAL_10_738635MHz / 2 )
+ MCFG_TMS9928A_VRAM_SIZE(0x4000)
+ MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(coleco_state, coleco_vdp_interrupt))
+ MCFG_TMS9928A_SCREEN_ADD_PAL( "screen" )
+ MCFG_SCREEN_UPDATE_DEVICE( "tms9928a", tms9928a_device, screen_update )
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( czz50, coleco )
+
+ /* basic machine hardware */
+ MCFG_CPU_MODIFY("maincpu") // note: cpu speed unverified, assume it's the same as ColecoVision
+ MCFG_CPU_PROGRAM_MAP(czz50_map)
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( dina, czz50 )
+
+ /* video hardware */
+ MCFG_DEVICE_REMOVE("tms9928a")
+ MCFG_DEVICE_REMOVE("screen")
+
+ MCFG_DEVICE_ADD( "tms9928a", TMS9929A, XTAL_10_738635MHz / 2 )
+ MCFG_TMS9928A_VRAM_SIZE(0x4000)
+ MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(coleco_state, coleco_vdp_interrupt))
+ MCFG_TMS9928A_SCREEN_ADD_PAL( "screen" )
+ MCFG_SCREEN_UPDATE_DEVICE( "tms9928a", tms9928a_device, screen_update )
+MACHINE_CONFIG_END
+
+
+/* ROMs */
+
+ROM_START (coleco)
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_SYSTEM_BIOS( 0, "original", "Original" )
+ ROMX_LOAD( "313 10031-4005 73108a.u2", 0x0000, 0x2000, CRC(3aa93ef3) SHA1(45bedc4cbdeac66c7df59e9e599195c778d86a92), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS( 1, "thick", "Thick characters" )
+ // differences to 0x3aa93ef3 modified characters, added a pad 2 related fix
+ ROMX_LOAD( "colecoa.rom", 0x0000, 0x2000, CRC(39bb16fc) SHA1(99ba9be24ada3e86e5c17aeecb7a2d68c5edfe59), ROM_BIOS(2) )
+ROM_END
+
+/* ONYX (Prototype)
+ Unreleased Brazilian Colecovision clone by Microdigital.
+
+ It was never released and the only known prototypes were uncovered by an ex-employee of Microdigital
+ called Cl??udio Cassens who donated it to collectors (Eduardo Luccas) in June 2015.
+ -- Felipe Sanches
+*/
+ROM_START (onyx)
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "onyx.rom", 0x0000, 0x2000, CRC(011c32e7) SHA1(f44263221e330b2590dffc1a6f43ed2591fe19be) )
+ROM_END
+
+/* PAL Colecovision BIOS
+
+Country: Italy
+Serial number: C0039036
+Model number: 240020
+Circuit board: (C) 1983 91162 rev D
+
+Information about the chip
+
+Motorola logo
+(C)1983 COLECO
+R72114A
+8317 */
+
+ROM_START (colecop)
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "r72114a_8317.u2", 0x0000, 0x2000, CRC(d393c0cc) SHA1(160077afb139943725c634d6539898db59f33657) )
+ROM_END
+
+ROM_START (svi603)
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "svi603.rom", 0x0000, 0x2000, CRC(19e91b82) SHA1(8a30abe5ffef810b0f99b86db38b1b3c9d259b78) )
+ROM_END
+
+ROM_START( czz50 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "czz50.rom", 0x0000, 0x2000, CRC(4999abc6) SHA1(96aecec3712c94517103d894405bc98a7dafa440) )
+ ROM_CONTINUE( 0x8000, 0x2000 )
+ROM_END
+
+#define rom_dina rom_czz50
+#define rom_prsarcde rom_czz50
+
+
+/* System Drivers */
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS
+CONS( 1982, coleco, 0, 0, coleco, coleco, driver_device, 0, "Coleco", "ColecoVision (NTSC)", 0 )
+CONS( 1982, onyx, coleco, 0, coleco, coleco, driver_device, 0, "Microdigital", "Onyx (Brazil/Prototype)", 0 )
+CONS( 1983, colecop, coleco, 0, colecop, coleco, driver_device, 0, "Coleco", "ColecoVision (PAL)", 0 )
+CONS( 1983, svi603, coleco, 0, coleco, coleco, driver_device, 0, "Spectravideo", "SVI-603 Coleco Game Adapter", 0 )
+CONS( 1986, czz50, 0, coleco, czz50, czz50, driver_device, 0, "Bit Corporation", "Chuang Zao Zhe 50", 0 )
+CONS( 1988, dina, czz50, 0, dina, czz50, driver_device, 0, "Telegames", "Dina", 0 )
+CONS( 1988, prsarcde, czz50, 0, czz50, czz50, driver_device, 0, "Telegames", "Personal Arcade", 0 )