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-rw-r--r--src/mame/drivers/mc1000.cpp610
1 files changed, 0 insertions, 610 deletions
diff --git a/src/mame/drivers/mc1000.cpp b/src/mame/drivers/mc1000.cpp
deleted file mode 100644
index d676ebbe4c2..00000000000
--- a/src/mame/drivers/mc1000.cpp
+++ /dev/null
@@ -1,610 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Curt Coder
-/***************************************************************************
-
- MC 1000
-
- 12/05/2009 Skeleton driver.
-
- http://ensjo.wikispaces.com/MC-1000+on+JEMU
- http://ensjo.blogspot.com/2006/11/color-artifacting-no-mc-1000.html
-
-****************************************************************************/
-
-/*
-
- TODO:
-
- - xtal frequency?
- - Z80 wait at 0x0000-0x1fff when !hsync & !vsync
- - 80-column card (MC6845) character generator ROM
- - Charlemagne / GEM-1000 / Junior Computer ROMs
-
-*/
-
-#include "emu.h"
-
-#include "bus/centronics/ctronics.h"
-#include "cpu/z80/z80.h"
-#include "imagedev/cassette.h"
-#include "machine/ram.h"
-#include "machine/rescap.h"
-#include "machine/timer.h"
-#include "sound/ay8910.h"
-#include "video/mc6845.h"
-#include "video/mc6847.h"
-
-#include "screen.h"
-#include "softlist.h"
-#include "speaker.h"
-
-
-#define SCREEN_TAG "screen"
-#define Z80_TAG "u13"
-#define AY8910_TAG "u21"
-#define MC6845_TAG "mc6845"
-#define MC6847_TAG "u19"
-#define CENTRONICS_TAG "centronics"
-
-#define MC1000_MC6845_VIDEORAM_SIZE 0x800
-#define MC1000_MC6847_VIDEORAM_SIZE 0x1800
-
-class mc1000_state : public driver_device
-{
-public:
- mc1000_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device(mconfig, type, tag),
- m_maincpu(*this, Z80_TAG),
- m_vdg(*this, MC6847_TAG),
- m_crtc(*this, MC6845_TAG),
- m_centronics(*this, CENTRONICS_TAG),
- m_cassette(*this, "cassette"),
- m_ram(*this, RAM_TAG),
- m_rom(*this, Z80_TAG),
- m_mc6845_video_ram(*this, "mc6845_vram"),
- m_mc6847_video_ram(*this, "mc6847_vram"),
- m_y(*this, "Y%u", 0),
- m_joy(*this, "JOY%u", 0),
- m_modifiers(*this, "MODIFIERS"),
- m_joykeymap(*this, "JOYKEYMAP%u", 0)
- { }
-
- void mc1000(machine_config &config);
-
-private:
- required_device<cpu_device> m_maincpu;
- required_device<mc6847_base_device> m_vdg;
- optional_device<mc6845_device> m_crtc;
- required_device<centronics_device> m_centronics;
- required_device<cassette_image_device> m_cassette;
- required_device<ram_device> m_ram;
- required_memory_region m_rom;
- required_shared_ptr<uint8_t> m_mc6845_video_ram;
- required_shared_ptr<uint8_t> m_mc6847_video_ram;
- required_ioport_array<8> m_y;
- required_ioport_array<2> m_joy;
- required_ioport m_modifiers;
- required_ioport_array<2> m_joykeymap;
-
- std::unique_ptr<uint8_t[]> m_banked_ram;
-
- virtual void machine_start() override;
- virtual void machine_reset() override;
-
- DECLARE_READ8_MEMBER( printer_r );
- DECLARE_WRITE8_MEMBER( printer_w );
- DECLARE_WRITE8_MEMBER( mc6845_ctrl_w );
- DECLARE_WRITE8_MEMBER( mc6847_attr_w );
- DECLARE_WRITE_LINE_MEMBER( fs_w );
- DECLARE_WRITE_LINE_MEMBER( hs_w );
- DECLARE_READ8_MEMBER( videoram_r );
- DECLARE_WRITE8_MEMBER( keylatch_w );
- DECLARE_READ8_MEMBER( keydata_r );
- DECLARE_READ8_MEMBER( rom_banking_r );
-
- void bankswitch();
-
- /* cpu state */
- int m_ne555_int;
-
- /* memory state */
- int m_rom0000;
- int m_mc6845_bank;
- int m_mc6847_bank;
-
- /* keyboard state */
- int m_keylatch;
-
- /* video state */
- int m_hsync;
- int m_vsync;
- uint8_t m_mc6847_attr;
-
- DECLARE_WRITE_LINE_MEMBER(write_centronics_busy);
- int m_centronics_busy;
-
- void init_mc1000();
- TIMER_DEVICE_CALLBACK_MEMBER(ne555_tick);
- void mc1000_banking_mem(address_map &map);
- void mc1000_io(address_map &map);
- void mc1000_mem(address_map &map);
-};
-
-/* Memory Banking */
-
-void mc1000_state::bankswitch()
-{
- address_space &program = m_maincpu->space(AS_PROGRAM);
-
- /* MC6845 video RAM */
- membank("bank2")->set_entry(m_mc6845_bank);
-
- /* extended RAM */
- if (m_ram->size() > 16*1024)
- {
- program.install_readwrite_bank(0x4000, 0x7fff, "bank3");
- }
- else
- {
- program.unmap_readwrite(0x4000, 0x7fff);
- }
-
- /* MC6847 video RAM */
- if (m_mc6847_bank)
- {
- if (m_ram->size() > 16*1024)
- {
- program.install_readwrite_bank(0x8000, 0x97ff, "bank4");
- }
- else
- {
- program.unmap_readwrite(0x8000, 0x97ff);
- }
- }
- else
- {
- program.install_readwrite_bank(0x8000, 0x97ff, "bank4");
- }
-
- membank("bank4")->set_entry(m_mc6847_bank);
-
- /* extended RAM */
- if (m_ram->size() > 16*1024)
- {
- program.install_readwrite_bank(0x9800, 0xbfff, "bank5");
- }
- else
- {
- program.unmap_readwrite(0x9800, 0xbfff);
- }
-}
-
-/* Read/Write Handlers */
-
-WRITE_LINE_MEMBER( mc1000_state::write_centronics_busy )
-{
- m_centronics_busy = state;
-}
-
-READ8_MEMBER( mc1000_state::printer_r )
-{
- return m_centronics_busy;
-}
-
-WRITE8_MEMBER( mc1000_state::printer_w )
-{
- m_centronics->write_strobe(BIT(data, 0));
-}
-
-WRITE8_MEMBER( mc1000_state::mc6845_ctrl_w )
-{
- m_mc6845_bank = BIT(data, 0);
-
- bankswitch();
-}
-
-WRITE8_MEMBER( mc1000_state::mc6847_attr_w )
-{
- /*
-
- bit description
-
- 0 enable CPU video RAM access
- 1 CSS
- 2 GM0
- 3 GM1
- 4 GM2
- 5 _INT/EXT
- 6 _A/S
- 7 _A/G
-
- */
-
- m_mc6847_bank = BIT(data, 0);
- m_vdg->css_w(BIT(data, 1));
- m_vdg->gm0_w(BIT(data, 2));
- m_vdg->gm1_w(BIT(data, 3));
- m_vdg->gm2_w(BIT(data, 4));
- m_vdg->intext_w(BIT(data, 5));
- m_vdg->as_w(BIT(data, 6));
- m_vdg->ag_w(BIT(data, 7));
-
- bankswitch();
-}
-
-/* Memory Maps */
-
-void mc1000_state::mc1000_mem(address_map &map)
-{
- map(0x0000, 0x1fff).bankrw("bank1");
- map(0x2000, 0x27ff).bankrw("bank2").share("mc6845_vram");
- map(0x2800, 0x3fff).ram().share("ram2800");
- map(0x4000, 0x7fff).bankrw("bank3");
- map(0x8000, 0x97ff).bankrw("bank4").share("mc6847_vram");
- map(0x9800, 0xbfff).bankrw("bank5");
- map(0xc000, 0xffff).rom().region(Z80_TAG, 0);
-}
-
-void mc1000_state::mc1000_banking_mem(address_map &map)
-{
- map(0x0000, 0x1fff).bankrw("bank1");
- map(0x2000, 0x27ff).bankrw("bank2").share("mc6845_vram");
- map(0x2800, 0x3fff).ram().share("ram2800");
- map(0x4000, 0x7fff).bankrw("bank3");
- map(0x8000, 0x97ff).bankrw("bank4").share("mc6847_vram");
- map(0x9800, 0xbfff).bankrw("bank5");
- map(0xc000, 0xffff).r(FUNC(mc1000_state::rom_banking_r));
-}
-
-void mc1000_state::mc1000_io(address_map &map)
-{
- map.global_mask(0xff);
- map(0x04, 0x04).rw(FUNC(mc1000_state::printer_r), FUNC(mc1000_state::printer_w));
- map(0x05, 0x05).w("cent_data_out", FUNC(output_latch_device::bus_w));
-// map(0x10, 0x10).w(m_crtc, FUNC(mc6845_device::address_w));
-// map(0x11, 0x11).rw(m_crtc, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
- map(0x12, 0x12).w(FUNC(mc1000_state::mc6845_ctrl_w));
- map(0x20, 0x20).w(AY8910_TAG, FUNC(ay8910_device::address_w));
- map(0x40, 0x40).r(AY8910_TAG, FUNC(ay8910_device::data_r));
- map(0x60, 0x60).w(AY8910_TAG, FUNC(ay8910_device::data_w));
- map(0x80, 0x80).w(FUNC(mc1000_state::mc6847_attr_w));
-}
-
-/* Input Ports */
-
-static INPUT_PORTS_START( mc1000 )
- PORT_START("JOY0") /* Player 1 */
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) /* = 'I' */
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) /* = 'Q' */
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) /* = 'Y' */
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) /* = '1' */
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) /* = '9' */
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("JOY1") /* Player 2 */
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) /* = '@' */
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) /* = 'H' */
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) /* = 'P' */
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) /* = 'X' */
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) /* = '0' */
- PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y0")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y1")
- 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_I) PORT_CHAR('I')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y2")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y3")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y4")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y5")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RUBOUT") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y6")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('^')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("Y7")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RESET")
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
- PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("MODIFIERS")
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
-
- PORT_START("JOYKEYMAP0")
- PORT_CONFNAME( 0x01, 0x00, "JOYSTICK A (P1) keyboard mapping" )
- PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
- PORT_CONFSETTING( 0x01, DEF_STR( On ) )
-
- PORT_START("JOYKEYMAP1")
- PORT_CONFNAME( 0x01, 0x00, "JOYSTICK B (P2) keyboard mapping" )
- PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
- PORT_CONFSETTING( 0x01, DEF_STR( On ) )
-INPUT_PORTS_END
-
-/* Video */
-
-WRITE_LINE_MEMBER( mc1000_state::fs_w )
-{
- m_vsync = state;
-}
-
-WRITE_LINE_MEMBER( mc1000_state::hs_w )
-{
- m_hsync = state;
-}
-
-READ8_MEMBER( mc1000_state::videoram_r )
-{
- if (offset == ~0) return 0xff;
-
- m_vdg->inv_w(BIT(m_mc6847_video_ram[offset], 7));
-
- return m_mc6847_video_ram[offset];
-}
-
-/* AY-3-8910 Interface */
-
-WRITE8_MEMBER( mc1000_state::keylatch_w )
-{
- m_keylatch = data;
-
- m_cassette->output(BIT(data, 7) ? -1.0 : +1.0);
-}
-
-READ8_MEMBER( mc1000_state::keydata_r )
-{
- uint8_t data = 0xff;
-
- if (!BIT(m_keylatch, 0))
- {
- data &= m_y[0]->read();
- if (m_joykeymap[1]->read()) data &= m_joy[1]->read();
- }
- if (!BIT(m_keylatch, 1))
- {
- data &= m_y[1]->read();
- if (m_joykeymap[0]->read()) data &= m_joy[0]->read();
- }
- if (!BIT(m_keylatch, 2)) data &= m_y[2]->read();
- if (!BIT(m_keylatch, 3)) data &= m_y[3]->read();
- if (!BIT(m_keylatch, 4)) data &= m_y[4]->read();
- if (!BIT(m_keylatch, 5)) data &= m_y[5]->read();
- if (!BIT(m_keylatch, 6)) data &= m_y[6]->read();
- if (!BIT(m_keylatch, 7)) data &= m_y[7]->read();
-
- data = (m_modifiers->read() & 0xc0) | (data & 0x3f);
-
- if ((m_cassette->get_state() & CASSETTE_MASK_UISTATE) == CASSETTE_PLAY)
- {
- if (m_cassette->input() >= +0.0) data &= 0x7f;
- }
-
- return data;
-}
-
-
-READ8_MEMBER( mc1000_state::rom_banking_r )
-{
- membank("bank1")->set_entry(0);
- m_rom0000 = 0;
- return m_rom->base()[offset];
-}
-
-/* Machine Initialization */
-
-void mc1000_state::machine_start()
-{
- /* setup memory banking */
- m_banked_ram = make_unique_clear<uint8_t[]>(0xc000);
-
- membank("bank1")->configure_entry(0, m_banked_ram.get());
- membank("bank1")->configure_entry(1, m_rom->base());
- membank("bank1")->set_entry(1);
-
- m_rom0000 = 1;
-
- membank("bank2")->configure_entry(0, m_banked_ram.get() + 0x2000);
- membank("bank2")->configure_entry(1, m_mc6845_video_ram);
- membank("bank2")->set_entry(0);
-
- membank("bank3")->configure_entry(0, m_banked_ram.get() + 0x4000);
- membank("bank3")->set_entry(0);
-
- membank("bank4")->configure_entry(0, m_mc6847_video_ram);
- membank("bank4")->configure_entry(1, m_banked_ram.get() + 0x8000);
- membank("bank4")->set_entry(0);
-
- membank("bank5")->configure_entry(0, m_banked_ram.get() + 0x9800);
- membank("bank5")->set_entry(0);
-
- bankswitch();
-
- /* register for state saving */
- save_pointer(NAME(m_banked_ram), 0xc000);
- save_item(NAME(m_rom0000));
- save_item(NAME(m_mc6845_bank));
- save_item(NAME(m_mc6847_bank));
- save_item(NAME(m_keylatch));
- save_item(NAME(m_hsync));
- save_item(NAME(m_vsync));
-}
-
-void mc1000_state::machine_reset()
-{
- membank("bank1")->set_entry(1);
-
- m_rom0000 = 1;
-}
-
-/* Machine Driver */
-
-/*
-
- Interrupt generator:
- NE555 chip in astable circuit.
-
- +---------*---*---o V+
- | | |
- +-+ | |
- | |390K | |
- | |R17 |8 |4
- +-+ +-------+
- | 7| |3
- *-------| |-------> /INT (Z80)
- | | |
- | | |
- +-+R16 2| IC 28 |
- | |1K +--| |
- | | | | 555 |
- +-+ | | |
- | | 6| |5
- *----*--| |---+
- | | | |
- ---C30 +-------+ ---C29
- ---10n |1 ---10n
- _|_ _|_ _|_
- /// /// ///
-
- Calculated properties:
-
- * 99.74489795918367 Duty Cycle Percentage
- * 367.3469387755102 Frequency in Hertz
- * 0.00000693 Seconds Low
- * 0.00270963 Seconds High
-
- */
-
-#define MC1000_NE555_FREQ (367) /* Hz */
-#define MC1000_NE555_DUTY_CYCLE (99.745) /* % */
-
-TIMER_DEVICE_CALLBACK_MEMBER(mc1000_state::ne555_tick)
-{
- // (m_ne555_int not needed anymore and can be done with?)
- m_ne555_int = param;
-
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, param);
-}
-
-void mc1000_state::mc1000(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, 3579545);
- m_maincpu->set_addrmap(AS_PROGRAM, &mc1000_state::mc1000_mem);
- m_maincpu->set_addrmap(AS_OPCODES, &mc1000_state::mc1000_banking_mem);
- m_maincpu->set_addrmap(AS_IO, &mc1000_state::mc1000_io);
-
- /* timers */
- timer_device &ne555clear(TIMER(config, "ne555clear"));
- ne555clear.configure_periodic(FUNC(mc1000_state::ne555_tick), attotime::from_hz(MC1000_NE555_FREQ));
- ne555clear.config_param(CLEAR_LINE);
-
- timer_device &ne555assert(TIMER(config, "ne555assert"));
- ne555assert.configure_periodic(FUNC(mc1000_state::ne555_tick), attotime::from_hz(MC1000_NE555_FREQ));
- ne555assert.set_start_delay(attotime::from_hz(MC1000_NE555_FREQ * 100 / MC1000_NE555_DUTY_CYCLE));
- ne555assert.config_param(ASSERT_LINE);
-
- /* video hardware */
- SCREEN(config, SCREEN_TAG, SCREEN_TYPE_RASTER);
-
- MC6847_NTSC(config, m_vdg, XTAL(3'579'545));
- m_vdg->hsync_wr_callback().set(FUNC(mc1000_state::hs_w));
- m_vdg->fsync_wr_callback().set(FUNC(mc1000_state::fs_w));
- m_vdg->input_callback().set(FUNC(mc1000_state::videoram_r));
- m_vdg->set_screen(SCREEN_TAG);
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
- ay8910_device &ay8910(AY8910(config, AY8910_TAG, 3579545/2));
- ay8910.set_flags(AY8910_SINGLE_OUTPUT);
- ay8910.set_resistors_load(RES_K(2.2), 0, 0);
- ay8910.port_b_read_callback().set(FUNC(mc1000_state::keydata_r));
- ay8910.port_a_write_callback().set(FUNC(mc1000_state::keylatch_w));
- ay8910.add_route(ALL_OUTPUTS, "mono", 0.25);
-
- /* devices */
- CASSETTE(config, m_cassette);
- m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED);
- m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05);
- m_cassette->set_interface("mc1000_cass");
-
- SOFTWARE_LIST(config, "cass_list").set_original("mc1000_cass");
-
- CENTRONICS(config, m_centronics, centronics_devices, "printer");
- m_centronics->busy_handler().set(FUNC(mc1000_state::write_centronics_busy));
-
- output_latch_device &latch(OUTPUT_LATCH(config, "cent_data_out"));
- m_centronics->set_output_latch(latch);
-
- /* internal ram */
- RAM(config, RAM_TAG).set_default_size("16K").set_extra_options("48K");
-}
-
-/* ROMs */
-
-ROM_START( mc1000 )
- ROM_REGION( 0x4000, Z80_TAG, 0 )
- ROM_LOAD( "mc1000.ic17", 0x0000, 0x2000, CRC(8e78d80d) SHA1(9480270e67a5db2e7de8bc5c8b9e0bb210d4142b) )
- ROM_LOAD( "mc1000.ic12", 0x2000, 0x2000, CRC(750c95f0) SHA1(fd766f5ea4481ef7fd4df92cf7d8397cc2b5a6c4) )
-ROM_END
-
-
-/* System Drivers */
-
-/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
-COMP( 1985, mc1000, 0, 0, mc1000, mc1000, mc1000_state, empty_init, "CCE", "MC-1000", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )