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-rw-r--r--src/mame/drivers/mc8020.cpp349
1 files changed, 349 insertions, 0 deletions
diff --git a/src/mame/drivers/mc8020.cpp b/src/mame/drivers/mc8020.cpp
new file mode 100644
index 00000000000..c6df1fb7894
--- /dev/null
+++ b/src/mame/drivers/mc8020.cpp
@@ -0,0 +1,349 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+MC-80.20 driver by Miodrag Milanovic
+
+2009-05-12 Skeleton driver.
+2009-05-15 Initial implementation
+2011-09-01 Modernised, added a keyboard to mc8020
+
+Real workings of mc8020 keyboard need to be understood and implemented.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/timer.h"
+#include "machine/z80ctc.h"
+#include "machine/z80pio.h"
+#include "screen.h"
+
+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")
+ { }
+
+ DECLARE_READ8_MEMBER(mc80_port_b_r);
+ DECLARE_READ8_MEMBER(mc80_port_a_r);
+ uint32_t screen_update_mc8020(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ TIMER_DEVICE_CALLBACK_MEMBER(mc8020_kbd);
+ IRQ_CALLBACK_MEMBER(mc8020_irq_callback);
+
+private:
+ required_shared_ptr<u8> m_p_videoram;
+ required_device<cpu_device> m_maincpu;
+};
+
+static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, mc8020_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x0bff) AM_ROM
+ AM_RANGE(0x0c00, 0x0fff) AM_RAM AM_SHARE("videoram")// 1KB RAM ZRE
+ AM_RANGE(0x2000, 0x5fff) AM_ROM
+ AM_RANGE(0x6000, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( io_map, AS_IO, 8, mc8020_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0xf0, 0xf3) AM_DEVREADWRITE("ctc", z80ctc_device, read, write)
+ AM_RANGE(0xf4, 0xf7) AM_DEVREADWRITE("pio", z80pio_device, read, write)
+ADDRESS_MAP_END
+
+
+/* Input ports */
+static INPUT_PORTS_START( mc8020 )
+ PORT_START("X1")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) 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("X2")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('0') 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("X3")
+ 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("X4")
+ 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("X5")
+ 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("X6")
+ 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("X7")
+ 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_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_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT)
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_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)
+INPUT_PORTS_END
+
+
+TIMER_DEVICE_CALLBACK_MEMBER( mc8020_state::mc8020_kbd )
+{
+ address_space &mem = m_maincpu->space(AS_PROGRAM);
+ char kbdrow[6];
+ for (u8 i = 1; i < 8; i++)
+ {
+ sprintf(kbdrow,"X%X", i);
+ mem.write_word(0xd20+i, ioport(kbdrow)->read());
+ }
+}
+
+IRQ_CALLBACK_MEMBER(mc8020_state::mc8020_irq_callback)
+{
+ return 0x00;
+}
+
+READ8_MEMBER( mc8020_state::mc80_port_b_r )
+{
+ return 0;
+}
+
+READ8_MEMBER( mc8020_state::mc80_port_a_r )
+{
+ return 0;
+}
+
+
+// This is not a content of U402 510
+// but order is fine
+static const uint8_t prom[] = {
+ 0x0c,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)
+{
+ uint8_t y,ra,chr,gfx;
+ uint16_t sy=0,ma=0,x;
+
+ for(y = 0; y < 8; y++ )
+ {
+ for (ra = 0; ra < 16; ra++)
+ {
+ uint16_t *p = &bitmap.pix16(sy++);
+
+ for (x = ma; x < ma + 32; x++)
+ {
+ if (ra > 3 && ra < 12)
+ {
+ 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 MACHINE_CONFIG_START( mc8020 )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, XTAL_2_4576MHz)
+ MCFG_CPU_PROGRAM_MAP(mem_map)
+ MCFG_CPU_IO_MAP(io_map)
+ MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(mc8020_state, mc8020_irq_callback)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(32*6, 16*8)
+ MCFG_SCREEN_VISIBLE_AREA(0, 32*6-1, 0, 16*8-1)
+ MCFG_SCREEN_UPDATE_DRIVER(mc8020_state, screen_update_mc8020)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD_MONOCHROME("palette")
+
+ /* devices */
+ MCFG_DEVICE_ADD("pio", Z80PIO, XTAL_2_4576MHz)
+ MCFG_Z80PIO_IN_PA_CB(READ8(mc8020_state, mc80_port_a_r))
+ //MCFG_Z80PIO_OUT_PA_CB(WRITE8(mc8020_state, mc80_port_a_w))
+ MCFG_Z80PIO_IN_PB_CB(READ8(mc8020_state, mc80_port_b_r))
+ //MCFG_Z80PIO_OUT_PB_CB(WRITE8(mc8020_state, mc80_port_b_w))
+
+ MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_2_4576MHz / 100)
+ MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
+ //MCFG_Z80CTC_ZC0_CB(WRITELINE(mc8020_state, ctc_z0_w))
+ //MCFG_Z80CTC_ZC1_CB(WRITELINE(mc8020_state, ctc_z1_w))
+ MCFG_Z80CTC_ZC2_CB(DEVWRITELINE("ctc", z80ctc_device, trg0))
+ MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg1))
+
+ MCFG_TIMER_DRIVER_ADD_PERIODIC("mc8020_kbd", mc8020_state, mc8020_kbd, attotime::from_hz(50))
+MACHINE_CONFIG_END
+
+
+/* ROM definition */
+ROM_START( mc8020 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_SYSTEM_BIOS(0, "ver1", "Version 1")
+ ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(1))
+ ROMX_LOAD( "s02.rom", 0x0400, 0x0400, CRC(93b5811c) SHA1(8559d24072c9b5908a2627ff986d818308f51d59), ROM_BIOS(1))
+ ROMX_LOAD( "s03.rom", 0x0800, 0x0400, CRC(3d32c334) SHA1(56d3012595540d03054ad3c6795ed5d929581a04), ROM_BIOS(1))
+ ROMX_LOAD( "mo01_v2.rom", 0x2000, 0x0400, CRC(7e47201c) SHA1(db49afdc5c1fe4065a979c56cbdbd3c58f5d942f), ROM_BIOS(1))
+
+ ROM_SYSTEM_BIOS(1, "ver2", "Version 2")
+ ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(2))
+ ROMX_LOAD( "s02_v2.rom", 0x0400, 0x0400, CRC(dd26c90a) SHA1(1108c11362fa63d21110a3b17868c1854a318c09), ROM_BIOS(2))
+ ROMX_LOAD( "s03_v2.rom", 0x0800, 0x0400, CRC(5b64ee7b) SHA1(3b4cbfcb8e2dedcfd4a3680c81fe6ceb2211b275), ROM_BIOS(2))
+ ROMX_LOAD( "mo01.rom", 0x2000, 0x0400, CRC(c65a470f) SHA1(71325fed1a342149b5efc2234ecfc8adfff0a42d), ROM_BIOS(2))
+
+ ROM_SYSTEM_BIOS(2, "ver3", "Version 3")
+ ROMX_LOAD( "s01.rom", 0x0000, 0x0400, CRC(0f1c1a62) SHA1(270c0a9e8e165658f3b09d40a3e8bb3dc1b88184), ROM_BIOS(3))
+ ROMX_LOAD( "s02_v3.rom", 0x0400, 0x0400, CRC(40c7a694) SHA1(bcdf382e8dad9bb6e06d23ec018e9df55c8d8d0c), ROM_BIOS(3))
+ ROMX_LOAD( "s03.rom", 0x0800, 0x0400, CRC(3d32c334) SHA1(56d3012595540d03054ad3c6795ed5d929581a04), ROM_BIOS(3))
+ ROMX_LOAD( "mo01_v2.rom",0x2000, 0x0400, CRC(7e47201c) SHA1(db49afdc5c1fe4065a979c56cbdbd3c58f5d942f), ROM_BIOS(3))
+
+ // 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
+
+
+/* Driver */
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS
+COMP( 198?, mc8020, 0, 0, mc8020, mc8020, mc8020_state, 0, "VEB Elektronik Gera", "MC-80.21/22", MACHINE_NO_SOUND )