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mc8020.cpp
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mc8020.cpp
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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Robbbert
/***************************************************************************
MC-80.20 driver by Miodrag Milanovic
2009-05-12 Skeleton driver.
2009-05-15 Initial implementation
2011-09-01 Modernised, added a keyboard
ToDo:
- Find out if it has sound hardware, add if so
- What port B on PIO is for
- Find out the correct frequencies and connections for the CTC
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/z80daisy.h"
#include "machine/z80ctc.h"
#include "machine/z80pio.h"
#include "emupal.h"
#include "screen.h"
namespace {
class mc8020_state : public driver_device
{
public:
mc8020_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_p_videoram(*this, "videoram")
, m_maincpu(*this, "maincpu")
, m_keyboard(*this, "X%u", 0U)
{ }
void mc8020(machine_config &config);
private:
u8 port_b_r();
void port_a_w(u8 data);
void port_b_w(u8 data);
uint32_t screen_update_mc8020(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void io_map(address_map &map);
void mem_map(address_map &map);
u8 m_row = 0U;
virtual void machine_start() override;
required_shared_ptr<u8> m_p_videoram;
required_device<z80_device> m_maincpu;
required_ioport_array<7> m_keyboard;
};
void mc8020_state::mem_map(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x0bff).rom();
map(0x0c00, 0x0fff).ram().share("videoram");// 1KB RAM ZRE
map(0x2000, 0x5fff).rom();
map(0x6000, 0xffff).ram();
}
void mc8020_state::io_map(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0xf0, 0xf3).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0xf4, 0xf7).rw("pio", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt));
}
/* Input ports */
static INPUT_PORTS_START( mc8020 )
PORT_START("X0")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(34)
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("X1")
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_QUOTE) 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_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('^')
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('/')
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
PORT_START("X2")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) 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("X3")
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("X4")
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("X5")
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_EQUALS) PORT_CHAR('=') PORT_CHAR('?')
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR(']')
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9)
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
PORT_START("X6")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ESC) PORT_CHAR(27)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
INPUT_PORTS_END
u8 mc8020_state::port_b_r()
{
if (m_row == 0x40)
return m_keyboard[0]->read();
else
if (m_row == 0x20)
return m_keyboard[1]->read();
else
if (m_row == 0x10)
return m_keyboard[2]->read();
else
if (m_row == 0x08)
return m_keyboard[3]->read();
else
if (m_row == 0x04)
return m_keyboard[4]->read();
else
if (m_row == 0x02)
return m_keyboard[5]->read();
else
if (m_row == 0x01)
return m_keyboard[6]->read();
else
return 0;
}
void mc8020_state::port_a_w(u8 data)
{
m_row = data;
}
void mc8020_state::port_b_w(u8 data)
{
}
void mc8020_state::machine_start()
{
save_item(NAME(m_row));
}
// This is not a content of U402 510
// but order is fine
static const uint8_t prom[] = {
0x0e,0x11,0x13,0x15,0x17,0x10,0x0e,0x00, // @
0x04,0x0a,0x11,0x11,0x1f,0x11,0x11,0x00, // A
0x1e,0x11,0x11,0x1e,0x11,0x11,0x1e,0x00, // B
0x0e,0x11,0x10,0x10,0x10,0x11,0x0e,0x00, // C
0x1e,0x09,0x09,0x09,0x09,0x09,0x1e,0x00, // D
0x1f,0x10,0x10,0x1e,0x10,0x10,0x1f,0x00, // E
0x1f,0x10,0x10,0x1e,0x10,0x10,0x10,0x00, // F
0x0e,0x11,0x10,0x10,0x13,0x11,0x0f,0x00, // G
0x11,0x11,0x11,0x1f,0x11,0x11,0x11,0x00, // H
0x0e,0x04,0x04,0x04,0x04,0x04,0x0e,0x00, // I
0x01,0x01,0x01,0x01,0x11,0x11,0x0e,0x00, // J
0x11,0x12,0x14,0x18,0x14,0x12,0x11,0x00, // K
0x10,0x10,0x10,0x10,0x10,0x10,0x1f,0x00, // L
0x11,0x1b,0x15,0x15,0x11,0x11,0x11,0x00, // M
0x11,0x11,0x19,0x15,0x13,0x11,0x11,0x00, // N
0x0e,0x11,0x11,0x11,0x11,0x11,0x0e,0x00, // O
0x1e,0x11,0x11,0x1e,0x10,0x10,0x10,0x00, // P
0x0e,0x11,0x11,0x11,0x15,0x12,0x0d,0x00, // Q
0x1e,0x11,0x11,0x1e,0x14,0x12,0x11,0x00, // R
0x0e,0x11,0x10,0x0e,0x01,0x11,0x0e,0x00, // S
0x1f,0x04,0x04,0x04,0x04,0x04,0x04,0x00, // T
0x11,0x11,0x11,0x11,0x11,0x11,0x0e,0x00, // U
0x11,0x11,0x11,0x0a,0x0a,0x04,0x04,0x00, // V
0x11,0x11,0x11,0x15,0x15,0x15,0x0a,0x00, // W
0x11,0x11,0x0a,0x04,0x0a,0x11,0x11,0x00, // X
0x11,0x11,0x0a,0x04,0x04,0x04,0x04,0x00, // Y
0x1f,0x01,0x02,0x04,0x08,0x10,0x1f,0x00, // Z
0x1c,0x10,0x10,0x10,0x10,0x10,0x1c,0x00, // [
0x00,0x10,0x08,0x04,0x02,0x01,0x00,0x00, // backslash
0x07,0x01,0x01,0x01,0x01,0x01,0x07,0x00, // ]
0x0e,0x11,0x00,0x00,0x00,0x00,0x00,0x00, // ^
0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00, // _
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, //
0x04,0x04,0x04,0x04,0x04,0x00,0x04,0x00, // !
0x0a,0x0a,0x0a,0x00,0x00,0x00,0x00,0x00, // "
0x0a,0x0a,0x1f,0x0a,0x1f,0x0a,0x0a,0x00, // #
0x00,0x11,0x0e,0x0a,0x0e,0x11,0x00,0x00, // []
0x18,0x19,0x02,0x04,0x08,0x13,0x03,0x00, // %
0x04,0x0a,0x0a,0x0c,0x15,0x12,0x0d,0x00, // &
0x04,0x04,0x08,0x00,0x00,0x00,0x00,0x00, // '
0x02,0x04,0x08,0x08,0x08,0x04,0x02,0x00, // (
0x08,0x04,0x02,0x02,0x02,0x04,0x08,0x00, // )
0x00,0x04,0x15,0x0e,0x15,0x04,0x00,0x00, // *
0x00,0x04,0x04,0x1f,0x04,0x04,0x00,0x00, // +
0x00,0x00,0x00,0x00,0x08,0x08,0x10,0x00, // ,
0x00,0x00,0x00,0x1f,0x00,0x00,0x00,0x00, // -
0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00, // .
0x00,0x01,0x02,0x04,0x08,0x10,0x00,0x00, // /
0x0e,0x11,0x13,0x15,0x19,0x11,0x0e,0x00, // 0
0x04,0x0c,0x04,0x04,0x04,0x04,0x0e,0x00, // 1
0x0e,0x11,0x01,0x06,0x08,0x10,0x1f,0x00, // 2
0x1f,0x01,0x02,0x06,0x01,0x11,0x0e,0x00, // 3
0x02,0x06,0x0a,0x12,0x1f,0x02,0x02,0x00, // 4
0x1f,0x10,0x1e,0x01,0x01,0x11,0x0e,0x00, // 5
0x07,0x08,0x10,0x1e,0x11,0x11,0x0e,0x00, // 6
0x1f,0x01,0x02,0x04,0x08,0x08,0x08,0x00, // 7
0x0e,0x11,0x11,0x0e,0x11,0x11,0x0e,0x00, // 8
0x0e,0x11,0x11,0x0f,0x01,0x02,0x1c,0x00, // 9
0x00,0x00,0x00,0x00,0x08,0x00,0x08,0x00, // :
0x00,0x00,0x04,0x00,0x04,0x04,0x08,0x00, // ;
0x02,0x04,0x08,0x10,0x08,0x04,0x02,0x00, // <
0x00,0x00,0x1f,0x00,0x1f,0x00,0x00,0x00, // =
0x08,0x04,0x02,0x01,0x02,0x04,0x08,0x00, // >
0x0e,0x11,0x01,0x02,0x04,0x00,0x04,0x00 // ?
};
uint32_t mc8020_state::screen_update_mc8020(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
u16 sy=0,ma=0;
for (u8 y = 0; y < 8; y++ )
{
for (u8 ra = 0; ra < 16; ra++)
{
u16 *p = &bitmap.pix(sy++);
for (u16 x = ma; x < ma + 32; x++)
{
u8 gfx;
if (ra > 3 && ra < 12)
{
u8 chr = m_p_videoram[x];
gfx = prom[(chr<<3) | (ra-4)];
}
else
gfx = 0;
/* Display a scanline of a character */
*p++ = BIT(gfx, 5);
*p++ = BIT(gfx, 4);
*p++ = BIT(gfx, 3);
*p++ = BIT(gfx, 2);
*p++ = BIT(gfx, 1);
*p++ = BIT(gfx, 0);
}
}
ma+=32;
}
return 0;
}
static const z80_daisy_config daisy_chain[] =
{
{ "ctc" },
{ nullptr }
};
void mc8020_state::mc8020(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, XTAL(2'457'600));
m_maincpu->set_addrmap(AS_PROGRAM, &mc8020_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &mc8020_state::io_map);
m_maincpu->set_daisy_config(daisy_chain);
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(32*6, 16*8);
screen.set_visarea(0, 32*6-1, 0, 16*8-1);
screen.set_screen_update(FUNC(mc8020_state::screen_update_mc8020));
screen.set_palette("palette");
PALETTE(config, "palette", palette_device::MONOCHROME);
/* devices */
z80pio_device& pio(Z80PIO(config, "pio", XTAL(2'457'600)));
pio.out_pa_callback().set(FUNC(mc8020_state::port_a_w));
pio.in_pb_callback().set(FUNC(mc8020_state::port_b_r));
pio.out_pb_callback().set(FUNC(mc8020_state::port_b_w));
z80ctc_device &ctc(Z80CTC(config, "ctc", XTAL(2'457'600)));
ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
ctc.set_clk<2>(XTAL(2'457'600) / 64); // guess
ctc.zc_callback<2>().set("ctc", FUNC(z80ctc_device::trg1));
ctc.zc_callback<2>().append("ctc", FUNC(z80ctc_device::trg0));
}
/* ROM definition */
ROM_START( mc8020 )
ROM_REGION( 0x6000, "maincpu", ROMREGION_ERASEFF )
ROM_SYSTEM_BIOS(0, "ver1", "Version 1")
ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(0))
ROMX_LOAD( "s02.rom", 0x0400, 0x0400, CRC(93b5811c) SHA1(8559d24072c9b5908a2627ff986d818308f51d59), ROM_BIOS(0))
ROMX_LOAD( "s03.rom", 0x0800, 0x0400, CRC(3d32c334) SHA1(56d3012595540d03054ad3c6795ed5d929581a04), ROM_BIOS(0))
ROMX_LOAD( "mo01_v2.rom", 0x2000, 0x0400, CRC(7e47201c) SHA1(db49afdc5c1fe4065a979c56cbdbd3c58f5d942f), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "ver2", "Version 2")
ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(1))
ROMX_LOAD( "s02_v2.rom", 0x0400, 0x0400, CRC(dd26c90a) SHA1(1108c11362fa63d21110a3b17868c1854a318c09), ROM_BIOS(1))
ROMX_LOAD( "s03_v2.rom", 0x0800, 0x0400, CRC(5b64ee7b) SHA1(3b4cbfcb8e2dedcfd4a3680c81fe6ceb2211b275), ROM_BIOS(1))
ROMX_LOAD( "mo01.rom", 0x2000, 0x0400, CRC(c65a470f) SHA1(71325fed1a342149b5efc2234ecfc8adfff0a42d), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "ver3", "Version 3")
ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(2))
ROMX_LOAD( "s02_v3.rom", 0x0400, 0x0400, CRC(40c7a694) SHA1(bcdf382e8dad9bb6e06d23ec018e9df55c8d8d0c), ROM_BIOS(2))
ROMX_LOAD( "s03.rom", 0x0800, 0x0400, CRC(3d32c334) SHA1(56d3012595540d03054ad3c6795ed5d929581a04), ROM_BIOS(2))
ROMX_LOAD( "mo01_v2.rom",0x2000, 0x0400, CRC(7e47201c) SHA1(db49afdc5c1fe4065a979c56cbdbd3c58f5d942f), ROM_BIOS(2))
// m02 doesn't exist on board
ROM_LOAD( "mo03.rom", 0x2800, 0x0400, CRC(29685056) SHA1(39e77658fb7af5a28112341f0893e007d73c1b7a))
ROM_LOAD( "mo04.rom", 0x2c00, 0x0400, CRC(fd315b73) SHA1(cfb943ec8c884a9b92562d05f92faf06fe42ad68))
ROM_LOAD( "mo05.rom", 0x3000, 0x0400, CRC(453d6370) SHA1(d96f0849a2da958d7e92a31667178ad140719477))
ROM_LOAD( "mo06.rom", 0x3400, 0x0400, CRC(6357aba5) SHA1(a4867766f6e14e9fe66f22a6839f17c01058c8af))
ROM_LOAD( "mo07.rom", 0x3800, 0x0400, CRC(a1eb6021) SHA1(b05b63f02de89f065f337bbe54c5b48244e3a4ba))
ROM_LOAD( "mo08.rom", 0x3c00, 0x0400, CRC(8221cc32) SHA1(65e0ee4241d39d138205c88374b3bcd127e21511))
ROM_LOAD( "mo09.rom", 0x4000, 0x0400, CRC(7ad5944d) SHA1(ef2781b114277a09ce0cf2e7decfdb7c48a693e3))
ROM_LOAD( "mo10.rom", 0x4400, 0x0400, CRC(11de8c76) SHA1(b384d22506ff7e3e28bd2dcc33b7a69617eeb52a))
ROM_LOAD( "mo11.rom", 0x4800, 0x0400, CRC(370cc672) SHA1(133f6e8bfd4e1ca2e9e0a8e2342084419f895e3c))
ROM_LOAD( "mo12.rom", 0x4c00, 0x0400, CRC(a3838f2b) SHA1(e3602943700bf5068117946bf86f052f5c587169))
ROM_LOAD( "mo13.rom", 0x5000, 0x0400, CRC(88b61d12) SHA1(00dd4452b4d4191e589ab58ba924ed21b10f323b))
ROM_LOAD( "mo14.rom", 0x5400, 0x0400, CRC(2168da19) SHA1(c1ce1263167067d8be0a90604d9c29b7379a0545))
ROM_LOAD( "mo15.rom", 0x5800, 0x0400, CRC(e32f54c4) SHA1(c3d9ca2204e7adbc625cf96031acb8c1df0447c7))
ROM_LOAD( "mo16.rom", 0x5c00, 0x0400, CRC(403be935) SHA1(4e74355a78ab090ce180437156fed8e4a1d1c787))
ROM_END
} // anonymous namespace
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 198?, mc8020, 0, 0, mc8020, mc8020, mc8020_state, empty_init, "VEB Elektronik Gera", "MC-80.21/22", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )