diff options
Diffstat (limited to 'src/mess/drivers/plan80.c')
-rw-r--r-- | src/mess/drivers/plan80.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/src/mess/drivers/plan80.c b/src/mess/drivers/plan80.c new file mode 100644 index 00000000000..9c537957bb8 --- /dev/null +++ b/src/mess/drivers/plan80.c @@ -0,0 +1,252 @@ +/*************************************************************************** + + Plan-80 + + 06/12/2009 Skeleton driver. + + Summary of Monitor commands: + + D - dump memory + F - fill memory + G - go (execute program at address) + I - in from a port and display + M - move? + O - out to a port + S - edit memory + + ToDo: + - fix autorepeat on the keyboard + - Add missing devices + - Picture of unit shows graphics, possibly a PCG + +****************************************************************************/ + +#include "emu.h" +#include "cpu/i8085/i8085.h" + +#define MACHINE_RESET_MEMBER(name) void name::machine_reset() +#define VIDEO_START_MEMBER(name) void name::video_start() +#define SCREEN_UPDATE16_MEMBER(name) UINT32 name::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) + +class plan80_state : public driver_device +{ +public: + plan80_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu") + , + m_p_videoram(*this, "p_videoram"){ } + + required_device<cpu_device> m_maincpu; + DECLARE_READ8_MEMBER(plan80_04_r); + DECLARE_WRITE8_MEMBER(plan80_09_w); + required_shared_ptr<UINT8> m_p_videoram; + const UINT8* m_p_chargen; + UINT8 m_kbd_row; + virtual void machine_reset(); + virtual void video_start(); + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + DECLARE_DRIVER_INIT(plan80); +}; + +READ8_MEMBER( plan80_state::plan80_04_r ) +{ + UINT8 data = 0xff; + + if (m_kbd_row == 0xfe) + data = ioport("LINE0")->read(); + else + if (m_kbd_row == 0xfd) + data = ioport("LINE1")->read(); + else + if (m_kbd_row == 0xfb) + data = ioport("LINE2")->read(); + else + if (m_kbd_row == 0xf7) + data = ioport("LINE3")->read(); + else + if (m_kbd_row == 0xef) + data = ioport("LINE4")->read(); + + return data; +} + +WRITE8_MEMBER( plan80_state::plan80_09_w ) +{ + m_kbd_row = data; +} + + +static ADDRESS_MAP_START(plan80_mem, AS_PROGRAM, 8, plan80_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x07ff) AM_RAMBANK("boot") + AM_RANGE(0x0800, 0xefff) AM_RAM + AM_RANGE(0xf000, 0xf7ff) AM_RAM AM_SHARE("p_videoram") + AM_RANGE(0xf800, 0xffff) AM_ROM +ADDRESS_MAP_END + +static ADDRESS_MAP_START(plan80_io, AS_IO, 8, plan80_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x04, 0x04) AM_READ(plan80_04_r) + AM_RANGE(0x09, 0x09) AM_WRITE(plan80_09_w) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( plan80 ) // Keyboard was worked out by trial & error;'F' keys produce foreign symbols + PORT_START("LINE0") /* FE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A -") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('-') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q ! 1") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('!') PORT_CHAR('1') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F-shift") PORT_CODE(KEYCODE_RSHIFT) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P ?? 0") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('0') + PORT_START("LINE1") /* FD */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Numbers") PORT_CODE(KEYCODE_LCONTROL) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X /") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('/') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D =") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('=') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E # 3") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('#') PORT_CHAR('3') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M .") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('.') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K [") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('[') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I ( 8") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('(') PORT_CHAR('8') + PORT_START("LINE2") /* FB */ + 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("V ;") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR(';') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G _") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('_') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T % 5") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('%') PORT_CHAR('5') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ?") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('?') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H <") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('<') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y & 6") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('&') PORT_CHAR('6') + PORT_START("LINE3") /* F7 */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C :") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR(':') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F ^") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('^') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R $ 4") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('$') PORT_CHAR('4') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N ,") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(',') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J >") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('>') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U \' 7") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('\'') PORT_CHAR('7') + PORT_START("LINE4") /* EF */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F3) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F4) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z *") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('*') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S +") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('+') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W \" 2") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('\"') PORT_CHAR('2') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F5) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L ]") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR(']') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ) 9") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR(')') PORT_CHAR('9') +INPUT_PORTS_END + + +/* after the first 4 bytes have been read from ROM, switch the ram back in */ +static TIMER_CALLBACK( plan80_boot ) +{ + plan80_state *state = machine.driver_data<plan80_state>(); + state->membank("boot")->set_entry(0); +} + +MACHINE_RESET_MEMBER( plan80_state ) +{ + membank("boot")->set_entry(1); + machine().scheduler().timer_set(attotime::from_usec(10), FUNC(plan80_boot)); +} + +DRIVER_INIT_MEMBER(plan80_state,plan80) +{ + UINT8 *RAM = memregion("maincpu")->base(); + membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0xf800); +} + +VIDEO_START_MEMBER( plan80_state ) +{ + m_p_chargen = memregion("chargen")->base(); +} + +SCREEN_UPDATE16_MEMBER( plan80_state ) +{ + UINT8 y,ra,chr,gfx; + UINT16 sy=0,ma=0,x; + + for (y = 0; y < 32; y++) + { + for (ra = 0; ra < 8; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + + for (x = ma; x < ma+48; x++) + { + chr = m_p_videoram[x]; + gfx = m_p_chargen[(chr << 3) | ra] ^ (BIT(chr, 7) ? 0xff : 0); + + /* Display a scanline of a character */ + *p++ = BIT(gfx, 6); + *p++ = BIT(gfx, 5); + *p++ = BIT(gfx, 4); + *p++ = BIT(gfx, 3); + *p++ = BIT(gfx, 2); + *p++ = BIT(gfx, 1); + } + } + ma+=64; + } + return 0; +} + +/* F4 Character Displayer */ +static const gfx_layout plan80_charlayout = +{ + 8, 8, /* 8 x 8 characters */ + 256, /* 256 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + /* x offsets */ + { 0, 1, 2, 3, 4, 5, 6, 7 }, + /* y offsets */ + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, + 8*8 /* every char takes 8 bytes */ +}; + +static GFXDECODE_START( plan80 ) + GFXDECODE_ENTRY( "chargen", 0x0000, plan80_charlayout, 0, 1 ) +GFXDECODE_END + + +static MACHINE_CONFIG_START( plan80, plan80_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",I8080, 2048000) + MCFG_CPU_PROGRAM_MAP(plan80_mem) + MCFG_CPU_IO_MAP(plan80_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_UPDATE_DRIVER(plan80_state, screen_update) + MCFG_SCREEN_SIZE(48*6, 32*8) + MCFG_SCREEN_VISIBLE_AREA(0, 48*6-1, 0, 32*8-1) + MCFG_GFXDECODE(plan80) + MCFG_PALETTE_LENGTH(2) + MCFG_PALETTE_INIT(monochrome_green) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( plan80 ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "pl80mon.bin", 0xf800, 0x0800, CRC(433fb685) SHA1(43d53c35544d3a197ab71b6089328d104535cfa5)) + + ROM_REGION( 0x10000, "spare", 0 ) + ROM_LOAD_OPTIONAL( "pl80mod.bin", 0xf000, 0x0800, CRC(6bdd7136) SHA1(721eab193c33c9330e0817616d3d2b601285fe50)) + + ROM_REGION( 0x0800, "chargen", 0 ) + ROM_LOAD( "pl80gzn.bin", 0x0000, 0x0800, CRC(b4ddbdb6) SHA1(31bf9cf0f2ed53f48dda29ea830f74cea7b9b9b2)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1988, plan80, 0, 0, plan80, plan80, plan80_state, plan80, "Tesla Eltos", "Plan-80", GAME_NOT_WORKING | GAME_NO_SOUND) + |