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5d8cdfb2e5
mame/src/mess/drivers/spc1000.c
Miodrag Milanovic 5d8cdfb2e5 (MESS) cassette cleanup (nw)
2013-04-17 08:30:36 +00:00

337 lines
13 KiB
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/***************************************************************************
Samsung SPC-1000 driver by Miodrag Milanovic
10/05/2009 Preliminary driver.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "video/mc6847.h"
#include "sound/ay8910.h"
#include "sound/wave.h"
#include "imagedev/cassette.h"
#include "machine/ram.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_vdg(*this, "mc6847") ,
m_maincpu(*this, "maincpu") {}
required_device<mc6847_base_device> m_vdg;
UINT8 m_IPLK;
UINT8 m_GMODE;
UINT8 m_video_ram[0x2000];
static UINT8 get_char_rom(running_machine &machine, UINT8 ch, int line)
{
spc1000_state *state = machine.driver_data<spc1000_state>();
return state->m_video_ram[0x1000+(ch&0x7F)*16+line];
}
DECLARE_WRITE8_MEMBER(spc1000_iplk_w);
DECLARE_READ8_MEMBER(spc1000_iplk_r);
DECLARE_WRITE8_MEMBER(spc1000_video_ram_w);
DECLARE_READ8_MEMBER(spc1000_video_ram_r);
DECLARE_READ8_MEMBER(spc1000_keyboard_r);
virtual void machine_reset();
DECLARE_WRITE8_MEMBER(spc1000_gmode_w);
DECLARE_READ8_MEMBER(spc1000_gmode_r);
DECLARE_READ8_MEMBER(spc1000_mc6847_videoram_r);
required_device<cpu_device> m_maincpu;
};
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::spc1000_iplk_w)
{
m_IPLK = m_IPLK ? 0 : 1;
if (m_IPLK == 1) {
UINT8 *mem = memregion("maincpu")->base();
membank("bank1")->set_base(mem);
membank("bank3")->set_base(mem);
} else {
UINT8 *ram = machine().device<ram_device>(RAM_TAG)->pointer();
membank("bank1")->set_base(ram);
membank("bank3")->set_base(ram + 0x8000);
}
}
READ8_MEMBER(spc1000_state::spc1000_iplk_r)
{
m_IPLK = m_IPLK ? 0 : 1;
if (m_IPLK == 1) {
UINT8 *mem = memregion("maincpu")->base();
membank("bank1")->set_base(mem);
membank("bank3")->set_base(mem);
} else {
UINT8 *ram = machine().device<ram_device>(RAM_TAG)->pointer();
membank("bank1")->set_base(ram);
membank("bank3")->set_base(ram + 0x8000);
}
return 0;
}
WRITE8_MEMBER(spc1000_state::spc1000_video_ram_w)
{
m_video_ram[offset] = data;
}
READ8_MEMBER(spc1000_state::spc1000_video_ram_r)
{
return m_video_ram[offset];
}
READ8_MEMBER(spc1000_state::spc1000_keyboard_r){
static const char *const keynames[] = {
"LINE0", "LINE1", "LINE2", "LINE3", "LINE4",
"LINE5", "LINE6", "LINE7", "LINE8", "LINE9"
};
return ioport(keynames[offset])->read();
}
WRITE8_MEMBER(spc1000_state::spc1000_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));
}
READ8_MEMBER(spc1000_state::spc1000_gmode_r)
{
return m_GMODE;
}
static ADDRESS_MAP_START( spc1000_io , AS_IO, 8, spc1000_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x1fff) AM_READWRITE(spc1000_video_ram_r, spc1000_video_ram_w)
AM_RANGE(0x2000, 0x3fff) AM_READWRITE(spc1000_gmode_r, spc1000_gmode_w)
AM_RANGE(0x8000, 0x8009) AM_READ(spc1000_keyboard_r)
AM_RANGE(0xA000, 0xA000) AM_READWRITE(spc1000_iplk_r, spc1000_iplk_w)
AM_RANGE(0x4000, 0x4000) AM_DEVWRITE_LEGACY("ay8910", ay8910_address_w)
AM_RANGE(0x4001, 0x4001) AM_DEVREADWRITE_LEGACY("ay8910", ay8910_r, ay8910_data_w)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( spc1000 )
PORT_START("LINE0")
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_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_RCONTROL) PORT_CODE(KEYCODE_LCONTROL)
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("LINE1")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("~") PORT_CODE(KEYCODE_TILDE)
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_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1)
PORT_START("LINE2")
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_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("]") PORT_CODE(KEYCODE_CLOSEBRACE)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2)
PORT_START("LINE3")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Del") PORT_CODE(KEYCODE_BACKSPACE)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[") PORT_CODE(KEYCODE_OPENBRACE)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3)
PORT_START("LINE4")
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_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4)
PORT_START("LINE5")
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_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5)
PORT_START("LINE6")
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_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6)
PORT_START("LINE7")
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_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7)
PORT_START("LINE8")
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_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8)
PORT_START("LINE9")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
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_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(";") PORT_CODE(KEYCODE_COLON)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9)
INPUT_PORTS_END
void spc1000_state::machine_reset()
{
address_space &space = m_maincpu->space(AS_PROGRAM);
UINT8 *mem = memregion("maincpu")->base();
UINT8 *ram = machine().device<ram_device>(RAM_TAG)->pointer();
space.install_read_bank(0x0000, 0x7fff, "bank1");
space.install_read_bank(0x8000, 0xffff, "bank3");
space.install_write_bank(0x0000, 0x7fff, "bank2");
space.install_write_bank(0x8000, 0xffff, "bank4");
membank("bank1")->set_base(mem);
membank("bank2")->set_base(ram);
membank("bank3")->set_base(mem);
membank("bank4")->set_base(ram + 0x8000);
m_IPLK = 1;
}
READ8_MEMBER(spc1000_state::spc1000_mc6847_videoram_r)
{
if (offset == ~0) return 0xff;
// m_GMODE layout: CSS|NA|PS2|PS1|~A/G|GM0|GM1|NA
// [PS2,PS1] is used to set screen 0/1 pages
if ( !BIT(m_GMODE, 3) ) { // text mode (~A/G set to A)
unsigned int page = (BIT(m_GMODE, 5) << 1) | BIT(m_GMODE, 4);
m_vdg->inv_w(BIT(m_video_ram[offset+page*0x200+0x800], 0));
m_vdg->css_w(BIT(m_video_ram[offset+page*0x200+0x800], 1));
m_vdg->as_w(BIT(m_video_ram[offset+page*0x200+0x800], 2));
m_vdg->intext_w(BIT(m_video_ram[offset+page*0x200+0x800], 3));
return m_video_ram[offset+page*0x200];
} else { // graphics mode: uses full 6KB of VRAM
return m_video_ram[offset];
}
}
static const ay8910_interface spc1000_ay_interface =
{
AY8910_LEGACY_OUTPUT,
AY8910_DEFAULT_LOADS,
DEVCB_NULL
};
static const cassette_interface spc1000_cassette_interface =
{
cassette_default_formats,
NULL,
(cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED),
NULL,
NULL
};
static const mc6847_interface spc1000_mc6847_intf =
{
"screen",
DEVCB_DRIVER_MEMBER(spc1000_state,spc1000_mc6847_videoram_r), // data fetch
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL, /* AG */
DEVCB_LINE_VCC, /* GM2 */
DEVCB_NULL, /* GM1 */
DEVCB_NULL, /* GM0 */
DEVCB_NULL, /* CSS */
DEVCB_NULL, /* AS */
DEVCB_NULL, /* INTEXT */
DEVCB_NULL, /* INV */
&spc1000_state::get_char_rom
};
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_MC6847_ADD("mc6847", MC6847_NTSC, XTAL_3_579545MHz, spc1000_mc6847_intf)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("ay8910", AY8910, XTAL_4MHz / 1)
MCFG_SOUND_CONFIG(spc1000_ay_interface)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MCFG_CASSETTE_ADD( "cassette", spc1000_cassette_interface )
/* 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
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1982, spc1000, 0, 0, spc1000, spc1000, driver_device, 0, "Samsung", "SPC-1000", GAME_NOT_WORKING)
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