// 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
Major reworking by R. Belmont 2012-2013 resulting in bootable floppies
*/
#include "emu.h"
#include "includes/concept.h"
#include "cpu/m68000/m68000.h"
#include "bus/a2bus/a2corvus.h"
#include "bus/a2bus/corvfdc01.h"
#include "bus/a2bus/corvfdc02.h"
#include "bus/rs232/rs232.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
void concept_state::concept_memmap(address_map &map)
{
map(0x000000, 0x000007).rom().region("maincpu", 0x010000); /* boot ROM mirror */
map(0x000008, 0x000fff).ram(); /* static RAM */
map(0x010000, 0x011fff).rom().region("maincpu", 0x010000); /* boot ROM */
map(0x020000, 0x021fff).rom().region("macsbug", 0x0); /* macsbugs ROM (optional) */
map(0x030000, 0x03ffff).rw(FUNC(concept_state::concept_io_r), FUNC(concept_state::concept_io_w)); /* I/O space */
map(0x080000, 0x0fffff).ram().share("videoram");/* AM_RAMBANK(2) */ /* DRAM */
}
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
void concept_a2_cards(device_slot_interface &device)
{
device.option_add("fchdd", A2BUS_CORVUS); // Corvus flat-cable HDD interface (see notes in a2corvus.c)
device.option_add("fdc01", A2BUS_CORVFDC01); // Corvus WD1793 floppy controller
device.option_add("fdc02", A2BUS_CORVFDC02); // Corvus NEC765 buffered floppy controller
}
void concept_state::concept(machine_config &config)
{
/* basic machine hardware */
M68000(config, m_maincpu, 8182000); /* 16.364 MHz / 2 */
m_maincpu->set_addrmap(AS_PROGRAM, &concept_state::concept_memmap);
config.m_minimum_quantum = attotime::from_hz(60);
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_video_attributes(VIDEO_UPDATE_BEFORE_VBLANK);
screen.set_refresh_hz(60); /* 50 or 60, jumper-selectable */
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(720, 560);
screen.set_visarea(0, 720-1, 0, 560-1);
screen.set_screen_update(FUNC(concept_state::screen_update));
screen.set_palette("palette");
/* Is the palette black on white or white on black??? */
palette_device &palette(PALETTE(config, "palette", 2));
palette.set_init("palette", FUNC(palette_device::palette_init_monochrome));
/* sound */
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, m_speaker);
m_speaker->add_route(ALL_OUTPUTS, "mono", 1.00);
/* rtc */
MM58274C(config, m_mm58274, 0);
m_mm58274->set_mode24(0); // 12 hour
m_mm58274->set_day1(1); // monday
/* via */
VIA6522(config, m_via0, 1022750);
m_via0->readpa_handler().set(FUNC(concept_state::via_in_a));
m_via0->readpb_handler().set(FUNC(concept_state::via_in_b));
m_via0->writepa_handler().set(FUNC(concept_state::via_out_a));
m_via0->writepb_handler().set(FUNC(concept_state::via_out_b));
m_via0->cb2_handler().set(FUNC(concept_state::via_out_cb2));
m_via0->irq_handler().set(FUNC(concept_state::via_irq_func));
/* ACIAs */
MOS6551(config, m_acia0, 0);
m_acia0->set_xtal(XTAL(1'843'200));
m_acia0->txd_handler().set("rs232a", FUNC(rs232_port_device::write_txd));
MOS6551(config, m_acia1, 0);
m_acia1->set_xtal(XTAL(1'843'200));
m_acia1->txd_handler().set("rs232b", FUNC(rs232_port_device::write_txd));
MOS6551(config, m_kbdacia, 0);
m_kbdacia->set_xtal(XTAL(1'843'200));
/* Apple II bus */
A2BUS(config, m_a2bus, 0).set_cputag(m_maincpu);
A2BUS_SLOT(config, "sl1", m_a2bus, concept_a2_cards, nullptr);
A2BUS_SLOT(config, "sl2", m_a2bus, concept_a2_cards, nullptr);
A2BUS_SLOT(config, "sl3", m_a2bus, concept_a2_cards, nullptr);
A2BUS_SLOT(config, "sl4", m_a2bus, concept_a2_cards, "fdc01");
/* 2x RS232 ports */
rs232_port_device &rs232a(RS232_PORT(config, "rs232a", default_rs232_devices, nullptr));
rs232a.rxd_handler().set(m_acia0, FUNC(mos6551_device::write_rxd));
rs232a.dcd_handler().set(m_acia0, FUNC(mos6551_device::write_dcd));
rs232a.dsr_handler().set(m_acia0, FUNC(mos6551_device::write_dsr));
rs232a.cts_handler().set(m_acia0, FUNC(mos6551_device::write_cts));
rs232_port_device &rs232b(RS232_PORT(config, "rs232b", default_rs232_devices, nullptr));
rs232b.rxd_handler().set(m_acia1, FUNC(mos6551_device::write_rxd));
rs232b.dcd_handler().set(m_acia1, FUNC(mos6551_device::write_dcd));
rs232b.dsr_handler().set(m_acia1, FUNC(mos6551_device::write_dsr));
rs232b.cts_handler().set(m_acia1, FUNC(mos6551_device::write_cts));
}
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(0) | ROM_SKIP(1))
ROMX_LOAD("bootl08l", 0x010001, 0x1000, CRC(acaefd07) SHA1(de0c7eaacaf4c0652aa45e523cebce2b2993c437), ROM_BIOS(0) | ROM_SKIP(1))
ROM_SYSTEM_BIOS(1, "lvl7", "Level 7" ) // v0? v1?
ROMX_LOAD("cc07h", 0x010000, 0x1000, CRC(455abac8) SHA1(b12e1580220242d34eafed1b486cebd89e823c8b), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("cc07l", 0x010001, 0x1000, CRC(107a3830) SHA1(0ea12ef13b0d11fcd83b306b3a1bb8014ba910c0), ROM_BIOS(1) | ROM_SKIP(1))
ROM_SYSTEM_BIOS(2, "lvl6", "Level 6" ) // v0?
ROMX_LOAD("cc06h", 0x010000, 0x1000, CRC(66b6b259) SHA1(1199a38ef3e94f695e8da6a7c80c6432da3cb80c), ROM_BIOS(2) | ROM_SKIP(1))
ROMX_LOAD("cc06l", 0x010001, 0x1000, CRC(600940d3) SHA1(c3278bf23b3b1c35ea1e3da48a05e877862a8345), ROM_BIOS(2) | 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
ROM_REGION16_BE(0x2000, "macsbug", 0)
ROM_LOAD16_BYTE( "mb20h.bin", 0x000000, 0x001000, CRC(aa357112) SHA1(88211e5f59887928c557c27cdea674f48bf8eaf7) )
ROM_LOAD16_BYTE( "mb20l.bin", 0x000001, 0x001000, CRC(b4b59de9) SHA1(3e8b8b5950b5359203c054f94af1fc5b8f0495b9) )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */
COMP( 1982, concept, 0, 0, concept, concept, concept_state, empty_init, "Corvus Systems", "Concept" , 0 )