// 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 Miso 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
2016-01-14: Casstte tape motor fixed for working perperly 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 "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"
#include "softlist.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")
, 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;
std::unique_ptr<UINT8[]> m_work_ram;
attotime m_time;
bool m_centronics_busy;
virtual void machine_start() override;
virtual void machine_reset() override;
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 )
{
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_MICROSECOND > 100) {
m_cass->change_state((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_time = time;
}
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);
m_time = machine().scheduler().time();
}
void spc1000_state::machine_reset()
{
m_work_ram = make_unique_clear<UINT8[]>(0x10000);
m_IPLK = 1;
}
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_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
//-------------------------------------------------
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", 0.05)
MCFG_DEVICE_ADD("ext1", SPC1000_EXP_SLOT, 0)
MCFG_DEVICE_SLOT_INTERFACE(spc1000_exp, nullptr, 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_CASSETTE_INTERFACE("spc1000_cass")
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(240426be) SHA1(8eb32e147c17a6d0f947b8bb3c6844750a7b64a8))
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", 0 )