summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/spc1000.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/spc1000.c')
-rw-r--r--src/mame/drivers/spc1000.c522
1 files changed, 522 insertions, 0 deletions
diff --git a/src/mame/drivers/spc1000.c b/src/mame/drivers/spc1000.c
new file mode 100644
index 00000000000..e69561163c6
--- /dev/null
+++ b/src/mame/drivers/spc1000.c
@@ -0,0 +1,522 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic, Robbbert
+/***************************************************************************
+
+Samsung SPC-1000 driver by Miodrag Milanovic
+
+ 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
+
+
+NOTE: 2014-09-13: added code from someone's modified MESS driver for floppy
+ disk. Since it is not to our coding standards, it is
+ commented out with #if 0/#endif and 3 slashes (///).
+ It is planned to be converted when time permits. The
+ author is Meeso Kim.
+
+ Hardware details of the fdc: Intelligent device, Z80 CPU,
+ XTAL_8MHz, PPI 8255, FDC uPD765C, 2 RAM chips, 28 other
+ small ics. And of course, no schematic.
+
+
+2014-10-11: Replaced above code with MESS-compliant code [Meeso Kim]
+
+2015-06-19: Added code for the centronics printer port
+
+IMPORTANT NOTE for tape usage: you *FIRST* press PLAY on the tape drive
+ (e.g. by pressing F2 in partial emulated keyboard mode) and *THEN* you
+ type LOAD on the BASIC prompt!
+ Otherwise, the system turns the tape motor ON but it does not receive any
+ data from tape, and it turns it OFF before the user can press PLAY.
+
+
+****************************************************************************/
+/*
+ * 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 "machine/ram.h"
+#include "sound/ay8910.h"
+#include "sound/wave.h"
+#include "video/mc6847.h"
+#include "imagedev/cassette.h"
+#include "formats/spc1000_cas.h"
+#include "bus/centronics/ctronics.h"
+
+#include "bus/spc1000/exp.h"
+#include "bus/spc1000/fdd.h"
+#include "bus/spc1000/vdp.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_motor(false)
+ , 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")
+ , m_io_joy(*this, "JOY")
+ , m_centronics(*this, "centronics")
+ {}
+
+ DECLARE_WRITE8_MEMBER(iplk_w);
+ DECLARE_READ8_MEMBER(iplk_r);
+ DECLARE_WRITE_LINE_MEMBER(irq_w);
+ DECLARE_WRITE8_MEMBER(gmode_w);
+ DECLARE_READ8_MEMBER(gmode_r);
+ DECLARE_READ8_MEMBER(porta_r);
+ DECLARE_WRITE_LINE_MEMBER( centronics_busy_w ) { m_centronics_busy = state; }
+ DECLARE_READ8_MEMBER(mc6847_videoram_r);
+ DECLARE_WRITE8_MEMBER(cass_w);
+ DECLARE_READ8_MEMBER(keyboard_r);
+ MC6847_GET_CHARROM_MEMBER(get_char_rom)
+ {
+ return m_p_videoram[0x1000 + (ch & 0x7f) * 16 + line];
+ }
+
+private:
+ UINT8 m_IPLK;
+ UINT8 m_GMODE;
+ UINT16 m_page;
+ UINT8 *m_work_ram;
+ bool m_motor;
+ bool m_centronics_busy;
+ virtual void machine_start();
+ virtual void machine_reset();
+ required_device<z80_device> m_maincpu;
+ required_device<mc6847_base_device> m_vdg;
+ required_device<cassette_image_device> m_cass;
+ required_device<ram_device> m_ram;
+ required_shared_ptr<UINT8> m_p_videoram;
+ required_ioport_array<10> m_io_kb;
+ required_ioport m_io_joy;
+ required_device<centronics_device> m_centronics;
+};
+
+static ADDRESS_MAP_START(spc1000_mem, AS_PROGRAM, 8, spc1000_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x7fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank2")
+ AM_RANGE(0x8000, 0xffff) AM_READ_BANK("bank3") AM_WRITE_BANK("bank4")
+ADDRESS_MAP_END
+
+WRITE8_MEMBER(spc1000_state::iplk_w)
+{
+ m_IPLK = m_IPLK ? 0 : 1;
+ membank("bank1")->set_entry(m_IPLK);
+ membank("bank3")->set_entry(m_IPLK);
+}
+
+READ8_MEMBER(spc1000_state::iplk_r)
+{
+ m_IPLK = m_IPLK ? 0 : 1;
+ membank("bank1")->set_entry(m_IPLK);
+ membank("bank3")->set_entry(m_IPLK);
+
+ return 0;
+}
+
+WRITE8_MEMBER( spc1000_state::cass_w )
+{
+ bool m = BIT(data, 1) ? true : false;
+ m_cass->output(BIT(data, 0) ? -1.0 : 1.0);
+ if (m && !m_motor)
+ m_cass->change_state(m_cass->get_state() & CASSETTE_MASK_MOTOR ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
+ m_motor = m;
+ m_centronics->write_strobe(BIT(data, 2) ? true : false);
+}
+
+WRITE8_MEMBER(spc1000_state::gmode_w)
+{
+ 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;
+}
+
+READ8_MEMBER(spc1000_state::gmode_r)
+{
+ return m_GMODE;
+}
+
+READ8_MEMBER( spc1000_state::keyboard_r )
+{
+ // 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;
+}
+
+
+static ADDRESS_MAP_START( spc1000_io , AS_IO, 8, spc1000_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x1fff) AM_RAM AM_SHARE("videoram")
+ AM_RANGE(0x2000, 0x3fff) AM_READWRITE(gmode_r, gmode_w)
+ AM_RANGE(0x4000, 0x4000) AM_DEVWRITE("ay8910", ay8910_device, address_w)
+ AM_RANGE(0x4001, 0x4001) AM_DEVREADWRITE("ay8910", ay8910_device, data_r, data_w)
+ AM_RANGE(0x6000, 0x6000) AM_WRITE(cass_w)
+ AM_RANGE(0x8000, 0x9fff) AM_READ(keyboard_r)
+ AM_RANGE(0xa000, 0xa000) AM_READWRITE(iplk_r, iplk_w)
+ AM_RANGE(0xc000, 0xdfff) AM_DEVREADWRITE("ext1", spc1000_exp_device, read, write)
+ADDRESS_MAP_END
+
+/* 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_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_CHAR(0x1c)
+ 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_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_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_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()
+{
+ UINT8 *mem = memregion("maincpu")->base();
+ UINT8 *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);
+ membank("bank1")->set_entry(1);
+ membank("bank3")->set_entry(1);
+
+ // intialize banks 2 & 4 (write banks)
+ membank("bank2")->set_base(ram);
+ membank("bank4")->set_base(ram + 0x8000);
+}
+
+void spc1000_state::machine_reset()
+{
+ m_work_ram = auto_alloc_array_clear(machine(), UINT8, 0x10000);
+ m_IPLK = 1;
+ m_motor = false;
+}
+
+READ8_MEMBER(spc1000_state::mc6847_videoram_r)
+{
+ 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 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];
+ }
+}
+
+READ8_MEMBER( spc1000_state::porta_r )
+{
+ UINT8 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_ENABLED) ? 0x00 : 0x40;
+ 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
+//-------------------------------------------------
+
+extern SLOT_INTERFACE_START(spc1000_exp)
+ SLOT_INTERFACE("fdd", SPC1000_FDD_EXP)
+ SLOT_INTERFACE("vdp", SPC1000_VDP_EXP)
+SLOT_INTERFACE_END
+
+static MACHINE_CONFIG_START( spc1000, spc1000_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(spc1000_mem)
+ MCFG_CPU_IO_MAP(spc1000_io)
+
+ /* video hardware */
+ MCFG_SCREEN_MC6847_NTSC_ADD("screen", "mc6847")
+
+ MCFG_DEVICE_ADD("mc6847", MC6847_NTSC, XTAL_3_579545MHz)
+ MCFG_MC6847_FSYNC_CALLBACK(WRITELINE(spc1000_state, irq_w))
+ MCFG_MC6847_INPUT_CALLBACK(READ8(spc1000_state, mc6847_videoram_r))
+ MCFG_MC6847_CHARROM_CALLBACK(spc1000_state, get_char_rom)
+ MCFG_MC6847_FIXED_MODE(MC6847_MODE_GM2)
+ // other lines not connected
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD("ay8910", AY8910, XTAL_4MHz / 1)
+ MCFG_AY8910_PORT_A_READ_CB(READ8(spc1000_state, porta_r))
+ MCFG_AY8910_PORT_B_WRITE_CB(DEVWRITE8("cent_data_out", output_latch_device, write))
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+ MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MCFG_DEVICE_ADD("ext1", SPC1000_EXP_SLOT, 0)
+ MCFG_DEVICE_SLOT_INTERFACE(spc1000_exp, NULL, false)
+
+ MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer")
+ MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(spc1000_state, centronics_busy_w))
+ MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")
+ MCFG_DEVICE_ADD("cent_status_in", INPUT_BUFFER, 0)
+
+ MCFG_CASSETTE_ADD("cassette")
+ MCFG_CASSETTE_FORMATS(spc1000_cassette_formats)
+ MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED)
+
+ MCFG_SOFTWARE_LIST_ADD("cass_list", "spc1000_cass")
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("64K")
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( spc1000 )
+ ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF)
+ ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(19638fc9) SHA1(489f1baa7aebf3c8c660325fb1fd790d84203284))
+ROM_END
+
+#if 0
+ROM_START( spc1000 )
+ ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF)
+ ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(2fbb6eca) SHA1(cc9a076b0f00d54b2aec31f1f558b10f43ef61c8))
+ /// more roms to come...
+ROM_END
+#endif
+
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 1982, spc1000, 0, 0, spc1000, spc1000, driver_device, 0, "Samsung", "SPC-1000", MACHINE_NOT_WORKING )