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path: root/src/mame/drivers/concept.c
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Diffstat (limited to 'src/mame/drivers/concept.c')
-rw-r--r--src/mame/drivers/concept.c320
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diff --git a/src/mame/drivers/concept.c b/src/mame/drivers/concept.c
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+++ b/src/mame/drivers/concept.c
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+// license:GPL-2.0+
+// copyright-holders:Raphael Nabet, Brett Wyer
+/*
+ Corvus Concept driver
+
+ Relatively simple 68k-based system
+
+ * 256 or 512 kbytes of DRAM
+ * 4kbytes of SRAM
+ * 8kbyte boot ROM
+ * optional MacsBugs ROM
+ * two serial ports, keyboard, bitmapped display, simple sound, omninet
+ LAN port (seems more or less similar to AppleTalk)
+ * 4 expansion ports enable to add expansion cards, namely floppy disk
+ and hard disk controllers (the expansion ports are partially compatible
+ with Apple 2 expansion ports)
+
+ Video: monochrome bitmapped display, 720*560 visible area (bitmaps are 768
+ pixels wide in memory). One interesting feature is the fact that the
+ monitor can be rotated to give a 560*720 vertical display (you need to
+ throw a switch and reset the machine for the display rotation to be taken
+ into account, though). One oddity is that the video hardware scans the
+ display from the lower-left corner to the upper-left corner (or from the
+ upper-right corner to the lower-left if the screen is flipped).
+ Sound: simpler buzzer connected to the via shift register
+ Keyboard: intelligent controller, connected through an ACIA. See CCOS
+ manual pp. 76 through 78. and User Guide p. 2-1 through 2-9.
+ Clock: mm58174 RTC
+
+ Raphael Nabet, Brett Wyer, 2003-2005
+*/
+
+#include "emu.h"
+#include "cpu/m68000/m68000.h"
+#include "includes/concept.h"
+#include "bus/a2bus/a2corvus.h"
+#include "bus/a2bus/corvfdc01.h"
+#include "bus/a2bus/corvfdc02.h"
+#include "bus/rs232/rs232.h"
+
+static ADDRESS_MAP_START(concept_memmap, AS_PROGRAM, 16, concept_state )
+ AM_RANGE(0x000000, 0x000007) AM_ROM AM_REGION("maincpu", 0x010000) /* boot ROM mirror */
+ AM_RANGE(0x000008, 0x000fff) AM_RAM /* static RAM */
+ AM_RANGE(0x010000, 0x011fff) AM_ROM AM_REGION("maincpu", 0x010000) /* boot ROM */
+ AM_RANGE(0x020000, 0x021fff) AM_ROM /* macsbugs ROM (optional) */
+ AM_RANGE(0x030000, 0x03ffff) AM_READWRITE(concept_io_r,concept_io_w) /* I/O space */
+
+ AM_RANGE(0x080000, 0x0fffff) AM_RAM AM_SHARE("videoram")/* AM_RAMBANK(2) */ /* DRAM */
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( concept )
+
+ PORT_START("KEY0") /* port 0: keys 0x00 through 0x0f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(right)") PORT_CODE(KEYCODE_RIGHT)
+ PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3_PAD)
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9_PAD)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("HOME") PORT_CODE(KEYCODE_HOME)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6_PAD)
+ PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_PLUS_PAD)
+ PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS_PAD)
+ PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER_PAD)
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(left)") PORT_CODE(KEYCODE_LEFT)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1_PAD)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7_PAD)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(down)") PORT_CODE(KEYCODE_DOWN)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4_PAD)
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8_PAD)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5_PAD)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2_PAD)
+
+ PORT_START("KEY1") /* port 1: keys 0x10 through 0x1f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS)
+
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("BACKSPACE") PORT_CODE(KEYCODE_BACKSPACE)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER)
+ PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE)
+ PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH)
+
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0 )") PORT_CODE(KEYCODE_0)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON)
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("` ~") PORT_CODE(KEYCODE_BACKSLASH2)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("' \"") PORT_CODE(KEYCODE_QUOTE)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("SHIFT (r)") PORT_CODE(KEYCODE_RSHIFT)
+
+ PORT_START("KEY2") /* port 2: keys 0x20 through 0x2f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1)
+ PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2)
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5)
+
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F)
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B)
+
+ PORT_START("KEY3") /* port 3: keys 0x30 through 0x3f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2 @") PORT_CODE(KEYCODE_2)
+ PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3)
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S)
+ PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D)
+ PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X)
+ PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C)
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("SHIFT (l)") PORT_CODE(KEYCODE_LSHIFT)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z)
+
+ PORT_START("KEY4") /* port 4: keys 0x40 through 0x4f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6 ^") PORT_CODE(KEYCODE_6)
+ PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7 &") PORT_CODE(KEYCODE_7)
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H)
+ PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J)
+ PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N)
+ PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M)
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("CONTROL") PORT_CODE(KEYCODE_LCONTROL)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("FAST") PORT_CODE(KEYCODE_TILDE)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("COMMAND") PORT_CODE(KEYCODE_LALT)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(space)") PORT_CODE(KEYCODE_SPACE)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ALT") PORT_CODE(KEYCODE_RALT)
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0_PAD)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("00") PORT_CODE(KEYCODE_ASTERISK)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_DEL_PAD)
+
+ PORT_START("KEY5") /* port 5: keys 0x50 through 0x5f */
+ PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8 *") PORT_CODE(KEYCODE_8)
+ PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9 (") PORT_CODE(KEYCODE_9)
+ PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I)
+ PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O)
+ PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
+ PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L)
+ PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA)
+ PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP)
+ PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F6") PORT_CODE(KEYCODE_F6)
+ PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F7") PORT_CODE(KEYCODE_F7)
+ PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F8") PORT_CODE(KEYCODE_F8)
+ PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F9") PORT_CODE(KEYCODE_F9)
+ PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F10") PORT_CODE(KEYCODE_F10)
+ PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(up)") PORT_CODE(KEYCODE_UP)
+ PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("???") PORT_CODE(KEYCODE_SLASH_PAD)
+ PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("BREAK") PORT_CODE(KEYCODE_PAUSE)
+
+ PORT_START("DSW0") /* port 6: on-board DIP switches */
+ PORT_DIPNAME(0x01, 0x00, "Omninet Address bit 0")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x01, DEF_STR( On ))
+ PORT_DIPNAME(0x02, 0x02, "Omninet Address bit 1")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x02, DEF_STR( On ))
+ PORT_DIPNAME(0x04, 0x00, "Omninet Address bit 2")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x04, DEF_STR( On ))
+ PORT_DIPNAME(0x08, 0x00, "Omninet Address bit 3")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x08, DEF_STR( On ))
+ PORT_DIPNAME(0x10, 0x00, "Omninet Address bit 4")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x10, DEF_STR( On ))
+ PORT_DIPNAME(0x20, 0x00, "Omninet Address bit 5")
+ PORT_DIPSETTING(0x00, DEF_STR( Off ))
+ PORT_DIPSETTING(0x20, DEF_STR( On ))
+ PORT_DIPNAME(0xc0, 0x00, "Type of Boot")
+ PORT_DIPSETTING(0x00, "Prompt for type of Boot") // Documentation has 0x00 and 0xc0 reversed per boot PROM
+ PORT_DIPSETTING(0x40, "Boot from Omninet")
+ PORT_DIPSETTING(0x80, "Boot from Local Disk")
+ PORT_DIPSETTING(0xc0, "Boot from Diskette")
+
+#if 0
+ PORT_START("DISPLAY") /* port 7: Display orientation */
+ PORT_DIPNAME(0x01, 0x00, "Screen Orientation")
+ PORT_DIPSETTING(0x00, "Horizontal")
+ PORT_DIPSETTING(0x01, "Vertical")
+#endif
+
+INPUT_PORTS_END
+
+
+
+/* init with simple, fixed, B/W palette */
+/* Is the palette black on white or white on black??? */
+
+SLOT_INTERFACE_START( concept_a2_cards )
+ SLOT_INTERFACE("fchdd", A2BUS_CORVUS) /* Corvus flat-cable HDD interface (see notes in a2corvus.c) */
+ SLOT_INTERFACE("fdc01", A2BUS_CORVFDC01) /* Corvus WD1793 floppy controller */
+ SLOT_INTERFACE("fdc02", A2BUS_CORVFDC02) /* Corvus NEC765 buffered floppy controller */
+SLOT_INTERFACE_END
+
+
+
+static MACHINE_CONFIG_START( concept, concept_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M68000, 8182000) /* 16.364 MHz / 2 */
+ MCFG_CPU_PROGRAM_MAP(concept_memmap)
+
+ MCFG_QUANTUM_TIME(attotime::from_hz(60))
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
+ MCFG_SCREEN_REFRESH_RATE(60) /* 50 or 60, jumper-selectable */
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(720, 560)
+ MCFG_SCREEN_VISIBLE_AREA(0, 720-1, 0, 560-1)
+ MCFG_SCREEN_UPDATE_DRIVER(concept_state, screen_update_concept)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
+
+ /* sound */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+
+ /* rtc */
+ MCFG_DEVICE_ADD("mm58274c", MM58274C, 0)
+ MCFG_MM58274C_MODE24(0) // 12 hour
+ MCFG_MM58274C_DAY1(1) // monday
+
+ /* via */
+ MCFG_DEVICE_ADD("via6522_0", VIA6522, 1022750)
+ MCFG_VIA6522_READPA_HANDLER(READ8(concept_state, via_in_a))
+ MCFG_VIA6522_READPB_HANDLER(READ8(concept_state, via_in_b))
+ MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(concept_state, via_out_a))
+ MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(concept_state, via_out_b))
+ MCFG_VIA6522_CB2_HANDLER(WRITELINE(concept_state, via_out_cb2))
+ MCFG_VIA6522_IRQ_HANDLER(WRITELINE(concept_state, via_irq_func))
+
+ /* ACIAs */
+ MCFG_DEVICE_ADD(ACIA_0_TAG, MOS6551, 0)
+ MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
+ MCFG_MOS6551_TXD_HANDLER(DEVWRITELINE("rs232a", rs232_port_device, write_txd))
+
+ MCFG_DEVICE_ADD(ACIA_1_TAG, MOS6551, 0)
+ MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
+ MCFG_MOS6551_TXD_HANDLER(DEVWRITELINE("rs232b", rs232_port_device, write_txd))
+
+ MCFG_DEVICE_ADD(KBD_ACIA_TAG, MOS6551, 0)
+ MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
+
+ /* Apple II bus */
+ MCFG_DEVICE_ADD(A2BUS_TAG, A2BUS, 0)
+ MCFG_A2BUS_CPU("maincpu")
+ MCFG_A2BUS_SLOT_ADD(A2BUS_TAG, "sl1", concept_a2_cards, NULL)
+ MCFG_A2BUS_SLOT_ADD(A2BUS_TAG, "sl2", concept_a2_cards, NULL)
+ MCFG_A2BUS_SLOT_ADD(A2BUS_TAG, "sl3", concept_a2_cards, NULL)
+ MCFG_A2BUS_SLOT_ADD(A2BUS_TAG, "sl4", concept_a2_cards, "fdc01")
+
+ /* 2x RS232 ports */
+ MCFG_RS232_PORT_ADD("rs232a", default_rs232_devices, NULL)
+ MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA_0_TAG, mos6551_device, write_rxd))
+ MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA_0_TAG, mos6551_device, write_dcd))
+ MCFG_RS232_DSR_HANDLER(DEVWRITELINE(ACIA_0_TAG, mos6551_device, write_dsr))
+ MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA_0_TAG, mos6551_device, write_cts))
+
+ MCFG_RS232_PORT_ADD("rs232b", default_rs232_devices, NULL)
+ MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA_1_TAG, mos6551_device, write_rxd))
+ MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA_1_TAG, mos6551_device, write_dcd))
+ MCFG_RS232_DSR_HANDLER(DEVWRITELINE(ACIA_1_TAG, mos6551_device, write_dsr))
+ MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA_1_TAG, mos6551_device, write_cts))
+MACHINE_CONFIG_END
+
+
+ROM_START( concept )
+ ROM_REGION16_BE(0x100000,"maincpu",0) /* 68k rom and ram */
+
+ // concept boot ROM
+ ROM_SYSTEM_BIOS(0, "lvl8", "Level 8" ) // v0?
+ ROMX_LOAD("bootl08h", 0x010000, 0x1000, CRC(ee479f51) SHA1(b20ba18564672196076e46507020c6d69a640a2f), ROM_BIOS(1) | ROM_SKIP(1))
+ ROMX_LOAD("bootl08l", 0x010001, 0x1000, CRC(acaefd07) SHA1(de0c7eaacaf4c0652aa45e523cebce2b2993c437), ROM_BIOS(1) | ROM_SKIP(1))
+
+ ROM_SYSTEM_BIOS(1, "lvl7", "Level 7" ) // v0? v1?
+ ROMX_LOAD("cc07h", 0x010000, 0x1000, CRC(455abac8) SHA1(b12e1580220242d34eafed1b486cebd89e823c8b), ROM_BIOS(2) | ROM_SKIP(1))
+ ROMX_LOAD("cc07l", 0x010001, 0x1000, CRC(107a3830) SHA1(0ea12ef13b0d11fcd83b306b3a1bb8014ba910c0), ROM_BIOS(2) | ROM_SKIP(1))
+
+ ROM_SYSTEM_BIOS(2, "lvl6", "Level 6" ) // v0?
+ ROMX_LOAD("cc06h", 0x010000, 0x1000, CRC(66b6b259) SHA1(1199a38ef3e94f695e8da6a7c80c6432da3cb80c), ROM_BIOS(3) | ROM_SKIP(1))
+ ROMX_LOAD("cc06l", 0x010001, 0x1000, CRC(600940d3) SHA1(c3278bf23b3b1c35ea1e3da48a05e877862a8345), ROM_BIOS(3) | ROM_SKIP(1))
+
+ ROM_REGION(0x400, "proms", 0)
+ ROM_LOAD("map04a.bin", 0x000, 0x400, CRC(1ae0db9b) SHA1(cdb6f63bb08072b454b4704e62de51c483ede734) )
+
+#if 0
+ // version 1 lvl 7 release
+ ROM_LOAD16_BYTE("bootl17h", 0x010000, 0x1000, CRC(6dd9718f)) // where does this come from?
+ ROM_LOAD16_BYTE("bootl17l", 0x010001, 0x1000, CRC(107a3830))
+#elif 0
+ // version $F lvl 8 (development version found on a floppy disk along with
+ // the source code)
+ ROM_LOAD16_WORD("cc.prm", 0x010000, 0x2000, CRC(b5a87dab) SHA1(0da59af6cfeeb38672f71731527beac323d9c3d6))
+#endif
+
+#if 0
+ // only known MACSbug release for the concept, with reset vector and
+ // entry point (the reset vector seems to be bogus: is the ROM dump bad,
+ // or were the ROMs originally loaded with buggy code?)
+ ROM_LOAD16_BYTE("macsbugh", 0x020000, 0x1000, CRC(aa357112))
+ ROM_LOAD16_BYTE("macsbugl", 0x020001, 0x1000, CRC(b4b59de9))
+#endif
+
+ROM_END
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
+COMP( 1982, concept, 0, 0, concept, concept, driver_device, 0, "Corvus Systems", "Concept" , 0 )