// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic, Robbbert /*************************************************************************** Samsung SPC-1000 driver by Miodrag Milanovic This was the first computer from Samsung. It featured a cassette player embedded in the righthand side of the keyboard. 2009-05-10 Preliminary driver. 2014-02-16 Added cassette, many games are playable ToDo: - Find out if any of the unconnected parts of 6000,4000,4001 are used Hardware details of the fdc: Intelligent device, Z80 CPU, XTAL(8'000'000), PPI 8255, FDC uPD765C, 2 RAM chips, 28 other small ics. 2014-10-11: Added code for the floppy disk [Meeso Kim] 2015-06-19: Added code for the centronics printer port 2016-01-14: Cassette tape motor fixed to work properly and ROM file changed for CP/M disk loading ****************************************************************************/ /* * SAMSUNG SPC-1000 Series (info from zannylim) * * YEAR MODEL MainVideo PRT FDD * ---- -------------- ------ ----- ------ ------- * 1982 SPC-1000 S68047 RGB buffer - * 1983 SPC-1000 S68047 RF-TV buffer - * 1983 SPC-1100 S68047 RF-TV - - * 1983 SPC-1000/1100 MC6847 RF-TV direct support * 1985 SPC-1000A MC6847 RF-TV direct support * * 2nd Video Display Processor type 1 : VDP UNIT (TMS9918 + 4KB VRAM) by staticsoft * 2nd Video Display Processor type 2 : SOFT BOX (TMS9918 + 4KB VRAM with BIOS) by sammi computer * * Intelligence FDD : SD-725(2FDD, RS232C), SD-720(1FDD), SD-725A(2FDD), SD-725B(Desktop 2FDD, RS232C) - EPSON TF20 F100 * External FDD with Expansion slot : KWE-1000 by kyungwoo * * Network device : ISAM-1000 by samsung * * +---------PRT------RGB----TVRF--+ SPC-1000 * + + * + ROM0 + CPU : Z80A (4MHz) * + ROM1 + RAM : 64KB * +-------+ ROM2 AY-3-8910 + VRAM : 6KB * + SPC-1000 + VDG : AMI S68047 with TTL RGB output * IPL + PSG : AY-3-8910 * RESET S68047 + * + Z80A + Include Internal Data-recorder * + ROM3 + * + + ROM : 32KB (8KB x 4) * +---------------------------------------+ * * +---------PRT----VIDEO----TVRF--+ SPC-1000 * + + * + ROM0 LM1889 + Support RF TV Support, but Removed RGB output * + ROM1 + * +-------+ ROM2 AY-3-8910 SPC-1000 + * + 1100 + * IPL + * RESET S68047 + * + Z80A + * + ROM3 + * + + * +---------------------------------------+ * * +----------------VIDEO----TVRF--+ SPC-1100 * + + * + ROM0 LM1889 + Removed Printer port * + ROM1 LM386(5V) + * +-------+ ROM2 AY-3-8910 SPC-1000 + * + 1100 + * IPL + * RESET S68047 + * + Z80A + * + ROM3 + * + + * +---------------------------------------+ * * +---------PRT----VIDEO----TVRF--+ SPC-1000, SPC-1100 * + + * + ROM0 MC1372 + New Video Display Generator : MC6847 * + ROM1 LM386(5V) + * +-------+ ROM2 AY-3-8910 + * + ROM3 SPC-1000/1100 + * IPL + * RESET MC6847 + * + Z80A + * + + * + + * +---------------------------------------+ * * +---------PRT----VIDEO----TVRF--+ SPC-1000, SPC-1100 * + + * + ROM0 S4 MC1372 + REV PCB No.839291 * + ROM1 LM386(5V) + * +-------+ ROM2 AY-3-8910 + Add composite color on/off switch * + ROM3 SPC-1000/1100 + * IPL + * RESET MC6847 + * + Z80A + * + + * + + * +---------------------------------------+ * * +---------PRT----VIDEO----TVRF--+ SPC-1000A * + + * + ROM0 S4 MC1372 + Internal Data-recorder with Cassette Audio Player * + ROM1 LM386(12V) + Add FDD auto detect * +-------+ ROM2 AY-3-8910 + Remove IPL button * + SPC-1000A ROM3 + Change DRAM refresh circuit * IPL + Use 64K DRAM made by Samsung * + MC6847 + Use TTL IC made by Goldstar * + Z80A + * + + * + + * +---------------------------------------+ * */ #include "emu.h" #include "cpu/z80/z80.h" #include "imagedev/cassette.h" #include "machine/ram.h" #include "sound/ay8910.h" #include "video/mc6847.h" #include "bus/centronics/ctronics.h" #include "bus/spc1000/exp.h" #include "bus/spc1000/fdd.h" #include "bus/spc1000/vdp.h" #include "softlist_dev.h" #include "speaker.h" #include "formats/spc1000_cas.h" class spc1000_state : public driver_device { public: spc1000_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_vdg(*this, "mc6847") , m_cass(*this, "cassette") , m_ram(*this, RAM_TAG) , m_p_videoram(*this, "videoram") , m_io_kb(*this, "LINE.%u", 0U) , m_io_joy(*this, "JOY") , m_centronics(*this, "centronics") {} void spc1000(machine_config &config); private: void iplk_w(uint8_t data); uint8_t iplk_r(); DECLARE_WRITE_LINE_MEMBER(irq_w); void gmode_w(uint8_t data); uint8_t gmode_r(); uint8_t porta_r(); DECLARE_WRITE_LINE_MEMBER( centronics_busy_w ) { m_centronics_busy = state; } uint8_t mc6847_videoram_r(offs_t offset); void cass_w(uint8_t data); uint8_t keyboard_r(offs_t offset); MC6847_GET_CHARROM_MEMBER(get_char_rom) { return m_p_videoram[0x1000 + (ch & 0x7f) * 16 + line]; } void io_map(address_map &map); void mem_map(address_map &map); uint8_t m_IPLK = 0U; uint8_t m_GMODE = 0U; uint16_t m_page = 0U; std::unique_ptr m_work_ram; attotime m_time; bool m_centronics_busy = false; virtual void machine_start() override; virtual void machine_reset() override; required_device m_maincpu; required_device m_vdg; required_device m_cass; required_device m_ram; required_shared_ptr m_p_videoram; required_ioport_array<10> m_io_kb; required_ioport m_io_joy; required_device m_centronics; }; void spc1000_state::mem_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).bankr("bank1").bankw("bank2"); map(0x8000, 0xffff).bankr("bank3").bankw("bank4"); } void spc1000_state::iplk_w(uint8_t data) { m_IPLK = m_IPLK ? 0 : 1; membank("bank1")->set_entry(m_IPLK); membank("bank3")->set_entry(m_IPLK); } uint8_t spc1000_state::iplk_r() { m_IPLK = m_IPLK ? 0 : 1; membank("bank1")->set_entry(m_IPLK); membank("bank3")->set_entry(m_IPLK); return 0; } void spc1000_state::cass_w(uint8_t data) { attotime time = machine().scheduler().time(); m_cass->output(BIT(data, 0) ? -1.0 : 1.0); if (BIT(data, 1) || (((time - m_time).as_attoseconds()/ATTOSECONDS_PER_MILLISECOND) < 1000)) { m_cass->change_state(CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR); m_time = time; } else m_cass->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); m_centronics->write_strobe(BIT(data, 2) ? true : false); } void spc1000_state::gmode_w(uint8_t data) { m_GMODE = data; // m_GMODE layout: CSS|NA|PS2|PS1|~A/G|GM0|GM1|NA // [PS2,PS1] is used to set screen 0/1 pages m_vdg->gm1_w(BIT(data, 1)); m_vdg->gm0_w(BIT(data, 2)); m_vdg->ag_w(BIT(data, 3)); m_vdg->css_w(BIT(data, 7)); m_page = ((BIT(data, 5) << 1) | BIT(data, 4)) * 0x200; } uint8_t spc1000_state::gmode_r() { return m_GMODE; } uint8_t spc1000_state::keyboard_r(offs_t offset) { // most games just read kb in $8000-$8009 but a few of them // (e.g. Toiler Adventure II and Vela) use mirrored addr instead offset &= 0xf; if (offset <= 9) return m_io_kb[offset]->read(); else return 0xff; } void spc1000_state::io_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x1fff).ram().share("videoram"); map(0x2000, 0x3fff).rw(FUNC(spc1000_state::gmode_r), FUNC(spc1000_state::gmode_w)); map(0x4000, 0x4000).w("ay8910", FUNC(ay8910_device::address_w)); map(0x4001, 0x4001).rw("ay8910", FUNC(ay8910_device::data_r), FUNC(ay8910_device::data_w)); map(0x6000, 0x6000).w(FUNC(spc1000_state::cass_w)); map(0x8000, 0x9fff).r(FUNC(spc1000_state::keyboard_r)); map(0xa000, 0xa000).rw(FUNC(spc1000_state::iplk_r), FUNC(spc1000_state::iplk_w)); map(0xc000, 0xdfff).rw("ext1", FUNC(spc1000_exp_device::read), FUNC(spc1000_exp_device::write)); } /* Input ports */ static INPUT_PORTS_START( spc1000 ) PORT_START("LINE.0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_RCONTROL) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_PAUSE) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Graph") PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) PORT_START("LINE.1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("^ ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~') PORT_CHAR(0x1e) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Home") PORT_CODE(KEYCODE_HOME) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') 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_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR(0x03) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_CHAR(0x01) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR(0x16) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_START("LINE.2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps") PORT_CODE(KEYCODE_CAPSLOCK) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR(0x1a) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') PORT_CHAR(0x1d) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_CHAR(0x16) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_CHAR(0x13) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR(0x17) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"') PORT_START("LINE.3") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Del") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(0x12) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(0x1b) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') PORT_CHAR(0x1b) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_CHAR(0x02) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_CHAR(0x04) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_CHAR(0x05) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_START("LINE.4") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_CHAR(0x1c) // shows symbols PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_CHAR(0x0e) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR(0x06) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR(0x12) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_START("LINE.5") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_CHAR(0x0d) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR(0x07) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(0x14) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_START("LINE.6") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("@ `") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@') PORT_CHAR('`') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR(0x18) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR(0x08) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_CHAR(0x19) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_START("LINE.7") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR(0x10) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_CHAR(0x0a) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_CHAR(0x15) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_START("LINE.8") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_CHAR(0x0b) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_CHAR(0x09) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_START("LINE.9") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_START) PORT_NAME("IPL") PORT_CODE(KEYCODE_END) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR(0x0c) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR(0x0e) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_START("JOY") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) // Button 2? PORT_BIT(0xc0, IP_ACTIVE_HIGH, IPT_UNUSED) // Cassette related INPUT_PORTS_END void spc1000_state::machine_start() { m_work_ram = make_unique_clear(0x10000); uint8_t *mem = memregion("maincpu")->base(); uint8_t *ram = m_ram->pointer(); // configure and intialize banks 1 & 3 (read banks) membank("bank1")->configure_entry(0, ram); membank("bank1")->configure_entry(1, mem); membank("bank3")->configure_entry(0, ram + 0x8000); membank("bank3")->configure_entry(1, mem); // intialize banks 2 & 4 (write banks) membank("bank2")->set_base(ram); membank("bank4")->set_base(ram + 0x8000); m_time = machine().scheduler().time(); save_item(NAME(m_IPLK)); save_item(NAME(m_GMODE)); save_item(NAME(m_page)); save_pointer(NAME(m_work_ram), 0x10000); save_item(NAME(m_time)); save_item(NAME(m_centronics_busy)); } void spc1000_state::machine_reset() { m_IPLK = 1; membank("bank1")->set_entry(1); membank("bank3")->set_entry(1); } uint8_t spc1000_state::mc6847_videoram_r(offs_t offset) { if (offset == ~0) return 0xff; // m_GMODE layout: CSS|NA|PS2|PS1|~A/G|GM0|GM1|NA if (!BIT(m_GMODE, 3)) { // text mode (~A/G set to A) uint8_t data = m_p_videoram[offset + m_page + 0x800]; m_vdg->inv_w(BIT(data, 0)); m_vdg->css_w(BIT(data, 1)); m_vdg->as_w (BIT(data, 2)); m_vdg->intext_w(BIT(data, 3)); return m_p_videoram[offset + m_page]; } else { // graphics mode: uses full 6KB of VRAM return m_p_videoram[offset]; } } uint8_t spc1000_state::porta_r() { uint8_t data = 0x3f; data |= (m_cass->input() > 0.0038) ? 0x80 : 0; data |= ((m_cass->get_state() & CASSETTE_MASK_UISTATE) == CASSETTE_STOPPED || ((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED)) ? 0x40 : 0; data &= ~(m_io_joy->read() & 0x3f); data &= ~((m_centronics_busy == 0)<< 5); return data; } // irq is inverted in emulation, so we need this trampoline WRITE_LINE_MEMBER( spc1000_state::irq_w ) { m_maincpu->set_input_line(0, state ? CLEAR_LINE : HOLD_LINE); } //------------------------------------------------- // address maps //------------------------------------------------- void spc1000_exp(device_slot_interface &device) { device.option_add("fdd", SPC1000_FDD_EXP); device.option_add("vdp", SPC1000_VDP_EXP); } void spc1000_state::spc1000(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, XTAL(4'000'000)); m_maincpu->set_addrmap(AS_PROGRAM, &spc1000_state::mem_map); m_maincpu->set_addrmap(AS_IO, &spc1000_state::io_map); /* video hardware */ SCREEN(config, "screen", SCREEN_TYPE_RASTER); MC6847_NTSC(config, m_vdg, XTAL(3'579'545)); m_vdg->set_screen("screen"); m_vdg->fsync_wr_callback().set(FUNC(spc1000_state::irq_w)); m_vdg->input_callback().set(FUNC(spc1000_state::mc6847_videoram_r)); m_vdg->set_get_char_rom(FUNC(spc1000_state::get_char_rom)); m_vdg->set_get_fixed_mode(mc6847_ntsc_device::MODE_GM2); // other lines not connected /* sound hardware */ SPEAKER(config, "mono").front_center(); ay8910_device &ay8910(AY8910(config, "ay8910", XTAL(4'000'000) / 1)); ay8910.port_a_read_callback().set(FUNC(spc1000_state::porta_r)); ay8910.port_b_write_callback().set("cent_data_out", FUNC(output_latch_device::write)); ay8910.add_route(ALL_OUTPUTS, "mono", 1.00); SPC1000_EXP_SLOT(config, "ext1", spc1000_exp); CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->busy_handler().set(FUNC(spc1000_state::centronics_busy_w)); output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out")); m_centronics->set_output_latch(cent_data_out); INPUT_BUFFER(config, "cent_status_in"); CASSETTE(config, m_cass); m_cass->set_formats(spc1000_cassette_formats); m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED); m_cass->add_route(ALL_OUTPUTS, "mono", 0.05); m_cass->set_interface("spc1000_cass"); SOFTWARE_LIST(config, "cass_list").set_original("spc1000_cass"); /* internal ram */ RAM(config, RAM_TAG).set_default_size("64K"); } /* ROM definition */ ROM_START( spc1000 ) ROM_REGION(0x8000, "maincpu", ROMREGION_ERASEFF) //ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(2fbb6eca) SHA1(cc9a076b0f00d54b2aec31f1f558b10f43ef61c8)) // bad? ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(240426be) SHA1(8eb32e147c17a6d0f947b8bb3c6844750a7b64a8)) ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1982, spc1000, 0, 0, spc1000, spc1000, spc1000_state, empty_init, "Samsung", "SPC-1000", MACHINE_SUPPORTS_SAVE )