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-rw-r--r--src/mess/drivers/comx35.c603
1 files changed, 603 insertions, 0 deletions
diff --git a/src/mess/drivers/comx35.c b/src/mess/drivers/comx35.c
new file mode 100644
index 00000000000..f50de0d67d7
--- /dev/null
+++ b/src/mess/drivers/comx35.c
@@ -0,0 +1,603 @@
+/*
+
+ TODO:
+
+ - unreliable DOS commands?
+ - tape input/output
+ - PL-80 plotter
+ - serial printer
+ - thermal printer
+
+*/
+
+#include "includes/comx35.h"
+
+
+
+//**************************************************************************
+// MEMORY ACCESS
+//**************************************************************************
+
+//-------------------------------------------------
+// mem_r - memory read
+//-------------------------------------------------
+
+READ8_MEMBER( comx35_state::mem_r )
+{
+ UINT8 *rom = memregion(CDP1802_TAG)->base();
+ UINT8 *ram = m_ram->pointer();
+ int extrom = 1;
+
+ UINT8 data = m_expansion->mrd_r(offset, &extrom);
+
+ if (offset < 0x4000)
+ {
+ if (extrom) data = rom[offset & 0x3fff];
+ }
+ else if (offset >= 0x4000 && offset < 0xc000)
+ {
+ data = ram[offset - 0x4000];
+ }
+ else if (offset >= 0xf400 && offset < 0xf800)
+ {
+ data = m_vis->char_ram_r(space, offset & 0x3ff);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// mem_w - memory write
+//-------------------------------------------------
+
+WRITE8_MEMBER( comx35_state::mem_w )
+{
+ UINT8 *ram = m_ram->pointer();
+
+ m_expansion->mwr_w(offset, data);
+
+ if (offset >= 0x4000 && offset < 0xc000)
+ {
+ ram[offset - 0x4000] = data;
+ }
+ else if (offset >= 0xf400 && offset < 0xf800)
+ {
+ m_vis->char_ram_w(space, offset & 0x3ff, data);
+ }
+ else if (offset >= 0xf800)
+ {
+ m_vis->page_ram_w(space, offset & 0x3ff, data);
+ }
+}
+
+
+//-------------------------------------------------
+// io_r - I/O read
+//-------------------------------------------------
+
+READ8_MEMBER( comx35_state::io_r )
+{
+ UINT8 data = m_expansion->io_r(offset);
+
+ if (offset == 3)
+ {
+ data = m_kbe->data_r(space, 0);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// io_w - I/O write
+//-------------------------------------------------
+
+WRITE8_MEMBER( comx35_state::io_w )
+{
+ m_expansion->io_w(offset, data);
+
+ if (offset >= 3)
+ {
+ cdp1869_w(space, offset, data);
+ }
+}
+
+
+
+//**************************************************************************
+// ADDRESS MAPS
+//**************************************************************************
+
+//-------------------------------------------------
+// ADDRESS_MAP( comx35_mem )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( comx35_mem, AS_PROGRAM, 8, comx35_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0xffff) AM_READWRITE(mem_r, mem_w)
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( comx35_io )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( comx35_io, AS_IO, 8, comx35_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x00, 0x07) AM_READWRITE(io_r, io_w)
+ADDRESS_MAP_END
+
+
+
+//**************************************************************************
+// INPUT PORTS
+//**************************************************************************
+
+//-------------------------------------------------
+// INPUT_CHANGED( comx35_reset )
+//-------------------------------------------------
+
+INPUT_CHANGED_MEMBER( comx35_state::trigger_reset )
+{
+ if (newval && BIT(ioport("D6")->read(), 7))
+ {
+ machine_reset();
+ }
+}
+
+
+//-------------------------------------------------
+// INPUT_PORTS( comx35 )
+//-------------------------------------------------
+
+static INPUT_PORTS_START( comx35 )
+ PORT_START("D1")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("0 \xE2\x96\xA0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('@')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('?')
+
+ PORT_START("D2")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('[')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(']')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(':')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR(';')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('<') PORT_CHAR('(')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('=') PORT_CHAR('^')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('>') PORT_CHAR(')')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('\\') PORT_CHAR('_')
+
+ PORT_START("D3")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('?')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G')
+
+ PORT_START("D4")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O')
+
+ PORT_START("D5")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W')
+
+ PORT_START("D6")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z')
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR('+') PORT_CHAR('{')
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('-') PORT_CHAR('|')
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('*') PORT_CHAR('}')
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('~')
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_CHAR(8)
+
+ PORT_START("D7")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("D8")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("CR") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("D9")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("D10")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("D11")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("MODIFIERS")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("CNTL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("RESET")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RT") PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10)) PORT_CHANGED_MEMBER(DEVICE_SELF, comx35_state, trigger_reset, 0)
+INPUT_PORTS_END
+
+
+
+//**************************************************************************
+// DEVICE CONFIGURATION
+//**************************************************************************
+
+//-------------------------------------------------
+// COSMAC_INTERFACE( cosmac_intf )
+//-------------------------------------------------
+
+void comx35_state::check_interrupt()
+{
+ m_maincpu->set_input_line(COSMAC_INPUT_LINE_INT, m_cr1 | m_int);
+}
+
+READ_LINE_MEMBER( comx35_state::clear_r )
+{
+ return m_clear;
+}
+
+READ_LINE_MEMBER( comx35_state::ef2_r )
+{
+ if (m_iden)
+ {
+ // interrupts disabled: PAL/NTSC
+ return m_vis->pal_ntsc_r();
+ }
+ else
+ {
+ // interrupts enabled: keyboard repeat
+ return m_kbe->rpt_r();
+ }
+}
+
+READ_LINE_MEMBER( comx35_state::ef4_r )
+{
+ return m_ef4; // | (m_cassette->input() > 0.0f);
+}
+
+static COSMAC_SC_WRITE( comx35_sc_w )
+{
+ comx35_state *state = device->machine().driver_data<comx35_state>();
+
+ switch (sc)
+ {
+ case COSMAC_STATE_CODE_S0_FETCH:
+ // not connected
+ break;
+
+ case COSMAC_STATE_CODE_S1_EXECUTE:
+ // every other S1 triggers a DMAOUT request
+ if (state->m_dma)
+ {
+ state->m_dma = 0;
+
+ if (!state->m_iden)
+ {
+ state->m_maincpu->set_input_line(COSMAC_INPUT_LINE_DMAOUT, ASSERT_LINE);
+ }
+ }
+ else
+ {
+ state->m_dma = 1;
+ }
+ break;
+
+ case COSMAC_STATE_CODE_S2_DMA:
+ // DMA acknowledge clears the DMAOUT request
+ state->m_maincpu->set_input_line(COSMAC_INPUT_LINE_DMAOUT, CLEAR_LINE);
+ break;
+
+ case COSMAC_STATE_CODE_S3_INTERRUPT:
+ // interrupt acknowledge clears the INT request
+ state->m_maincpu->set_input_line(COSMAC_INPUT_LINE_INT, CLEAR_LINE);
+ break;
+ }
+}
+
+WRITE_LINE_MEMBER( comx35_state::q_w )
+{
+ m_q = state;
+
+ if (m_iden && state)
+ {
+ // enable interrupts
+ m_iden = 0;
+ }
+
+ // cassette output
+ m_cassette->output(state ? +1.0 : -1.0);
+
+ // expansion bus
+ m_expansion->q_w(state);
+}
+
+static COSMAC_INTERFACE( cosmac_intf )
+{
+ DEVCB_LINE_VCC, // wait
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, clear_r),// clear
+ DEVCB_NULL, // EF1
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, ef2_r), // EF2
+ DEVCB_NULL, // EF3
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, ef4_r), // EF4
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, q_w), // Q
+ DEVCB_NULL, // DMA in
+ DEVCB_NULL, // DMA out
+ comx35_sc_w, // SC
+ DEVCB_NULL, // TPA
+ DEVCB_NULL // TPB
+};
+
+
+//-------------------------------------------------
+// CDP1871_INTERFACE( kbc_intf )
+//-------------------------------------------------
+
+READ_LINE_MEMBER( comx35_state::shift_r )
+{
+ return BIT(ioport("MODIFIERS")->read(), 0);
+}
+
+READ_LINE_MEMBER( comx35_state::control_r )
+{
+ return BIT(ioport("MODIFIERS")->read(), 1);
+}
+
+static CDP1871_INTERFACE( kbc_intf )
+{
+ DEVCB_INPUT_PORT("D1"),
+ DEVCB_INPUT_PORT("D2"),
+ DEVCB_INPUT_PORT("D3"),
+ DEVCB_INPUT_PORT("D4"),
+ DEVCB_INPUT_PORT("D5"),
+ DEVCB_INPUT_PORT("D6"),
+ DEVCB_INPUT_PORT("D7"),
+ DEVCB_INPUT_PORT("D8"),
+ DEVCB_INPUT_PORT("D9"),
+ DEVCB_INPUT_PORT("D10"),
+ DEVCB_INPUT_PORT("D11"),
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, shift_r),
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, control_r),
+ DEVCB_NULL,
+ DEVCB_CPU_INPUT_LINE(CDP1802_TAG, COSMAC_INPUT_LINE_EF3),
+ DEVCB_NULL // polled
+};
+
+
+//-------------------------------------------------
+// cassette_interface cassette_intf
+//-------------------------------------------------
+
+static const cassette_interface cassette_intf =
+{
+ cassette_default_formats,
+ NULL,
+ (cassette_state)(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED),
+ NULL,
+ NULL
+};
+
+
+//-------------------------------------------------
+// COMX_EXPANSION_INTERFACE( expansion_intf )
+//-------------------------------------------------
+
+WRITE_LINE_MEMBER( comx35_state::int_w )
+{
+ m_int = state;
+ check_interrupt();
+}
+
+WRITE_LINE_MEMBER( comx35_state::ef4_w )
+{
+ m_ef4 = state;
+}
+
+static COMX_EXPANSION_INTERFACE( expansion_intf )
+{
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, int_w),
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, ef4_w),
+ DEVCB_NULL,
+ DEVCB_NULL
+};
+
+static SLOT_INTERFACE_START( comx_expansion_cards )
+ SLOT_INTERFACE("eb", COMX_EB)
+ SLOT_INTERFACE("fd", COMX_FD)
+ SLOT_INTERFACE("clm", COMX_CLM)
+ SLOT_INTERFACE("ram", COMX_RAM)
+ SLOT_INTERFACE("joy", COMX_JOY)
+ SLOT_INTERFACE("prn", COMX_PRN)
+ SLOT_INTERFACE("thm", COMX_THM)
+ SLOT_INTERFACE("epr", COMX_EPR)
+SLOT_INTERFACE_END
+
+
+
+//**************************************************************************
+// MACHINE INITIALIZATION
+//**************************************************************************
+
+//-------------------------------------------------
+// device_timer - handler timer events
+//-------------------------------------------------
+
+void comx35_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+ case TIMER_ID_RESET:
+ m_clear = 1;
+ break;
+ }
+}
+
+
+//-------------------------------------------------
+// MACHINE_START( comx35 )
+//-------------------------------------------------
+
+void comx35_state::machine_start()
+{
+ // clear the RAM since DOS card will go crazy if RAM is not all zeroes
+ UINT8 *ram = m_ram->pointer();
+ memset(ram, 0, 0x8000);
+
+ // register for state saving
+ save_item(NAME(m_clear));
+ save_item(NAME(m_q));
+ save_item(NAME(m_ef4));
+ save_item(NAME(m_iden));
+ save_item(NAME(m_dma));
+ save_item(NAME(m_int));
+ save_item(NAME(m_prd));
+ save_item(NAME(m_cr1));
+}
+
+
+//-------------------------------------------------
+// MACHINE_RESET( comx35 )
+//-------------------------------------------------
+
+void comx35_state::machine_reset()
+{
+ int t = RES_K(27) * CAP_U(1) * 1000; // t = R1 * C1
+
+ m_clear = 0;
+ m_iden = 1;
+ m_cr1 = 1;
+ m_ef4 = CLEAR_LINE;
+ m_int = CLEAR_LINE;
+ m_prd = CLEAR_LINE;
+
+ timer_set(attotime::from_msec(t), TIMER_ID_RESET);
+}
+
+
+
+//**************************************************************************
+// MACHINE DRIVERS
+//**************************************************************************
+
+//-------------------------------------------------
+// MACHINE_CONFIG( pal )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_START( pal, comx35_state )
+ // basic system hardware
+ MCFG_CPU_ADD(CDP1802_TAG, COSMAC, CDP1869_CPU_CLK_PAL)
+ MCFG_CPU_PROGRAM_MAP(comx35_mem)
+ MCFG_CPU_IO_MAP(comx35_io)
+ MCFG_CPU_CONFIG(cosmac_intf)
+
+ // sound and video hardware
+ MCFG_FRAGMENT_ADD(comx35_pal_video)
+
+ // peripheral hardware
+ MCFG_CDP1871_ADD(CDP1871_TAG, kbc_intf, CDP1869_CPU_CLK_PAL / 8)
+ MCFG_QUICKLOAD_ADD("quickload", comx35_comx, "comx", 0)
+ MCFG_CASSETTE_ADD(CASSETTE_TAG, cassette_intf)
+ MCFG_PRINTER_ADD("printer")
+
+ MCFG_COMXPL80_ADD()
+
+ // expansion bus
+ MCFG_COMX_EXPANSION_SLOT_ADD(EXPANSION_TAG, expansion_intf, comx_expansion_cards, "eb", NULL)
+
+ // internal ram
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("32K")
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// MACHINE_CONFIG( ntsc )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_START( ntsc, comx35_state )
+ // basic system hardware
+ MCFG_CPU_ADD(CDP1802_TAG, COSMAC, CDP1869_CPU_CLK_NTSC)
+ MCFG_CPU_PROGRAM_MAP(comx35_mem)
+ MCFG_CPU_IO_MAP(comx35_io)
+ MCFG_CPU_CONFIG(cosmac_intf)
+
+ // sound and video hardware
+ MCFG_FRAGMENT_ADD(comx35_ntsc_video)
+
+ // peripheral hardware
+ MCFG_CDP1871_ADD(CDP1871_TAG, kbc_intf, CDP1869_CPU_CLK_NTSC / 8)
+ MCFG_QUICKLOAD_ADD("quickload", comx35_comx, "comx", 0)
+ MCFG_CASSETTE_ADD(CASSETTE_TAG, cassette_intf)
+ MCFG_PRINTER_ADD("printer")
+
+ MCFG_COMXPL80_ADD()
+
+ // expansion bus
+ MCFG_COMX_EXPANSION_SLOT_ADD(EXPANSION_TAG, expansion_intf, comx_expansion_cards, "eb", NULL)
+
+ // internal ram
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("32K")
+MACHINE_CONFIG_END
+
+
+
+//**************************************************************************
+// ROMS
+//**************************************************************************
+
+//-------------------------------------------------
+// ROM( comx35p )
+//-------------------------------------------------
+
+ROM_START( comx35p )
+ ROM_REGION( 0x10000, CDP1802_TAG, 0 )
+ ROM_DEFAULT_BIOS( "basic100" )
+ ROM_SYSTEM_BIOS( 0, "basic100", "COMX BASIC V1.00" )
+ ROMX_LOAD( "comx_10.u21", 0x0000, 0x4000, CRC(68d0db2d) SHA1(062328361629019ceed9375afac18e2b7849ce47), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS( 1, "basic101", "COMX BASIC V1.01" )
+ ROMX_LOAD( "comx_11.u21", 0x0000, 0x4000, CRC(609d89cd) SHA1(799646810510d8236fbfafaff7a73d5170990f16), ROM_BIOS(2) )
+ROM_END
+
+
+//-------------------------------------------------
+// ROM( comx35n )
+//-------------------------------------------------
+
+#define rom_comx35n rom_comx35p
+
+
+
+//**************************************************************************
+// SYSTEM DRIVERS
+//**************************************************************************
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS
+COMP( 1983, comx35p, 0, 0, pal, comx35, driver_device, 0, "Comx World Operations Ltd", "COMX 35 (PAL)", GAME_IMPERFECT_SOUND )
+COMP( 1983, comx35n, comx35p,0, ntsc, comx35, driver_device, 0, "Comx World Operations Ltd", "COMX 35 (NTSC)", GAME_IMPERFECT_SOUND )