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Diffstat (limited to 'src/mame/drivers/plan80.c')
-rw-r--r--src/mame/drivers/plan80.c265
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diff --git a/src/mame/drivers/plan80.c b/src/mame/drivers/plan80.c
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+++ b/src/mame/drivers/plan80.c
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic, Robbbert
+/***************************************************************************
+
+ 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"
+
+
+class plan80_state : public driver_device
+{
+public:
+ enum
+ {
+ TIMER_BOOT
+ };
+
+ 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);
+
+protected:
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+};
+
+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
+
+
+void plan80_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+ case TIMER_BOOT:
+ /* after the first 4 bytes have been read from ROM, switch the ram back in */
+ membank("boot")->set_entry(0);
+ break;
+ default:
+ assert_always(FALSE, "Unknown id in plan80_state::device_timer");
+ }
+}
+
+void plan80_state::machine_reset()
+{
+ membank("boot")->set_entry(1);
+ timer_set(attotime::from_usec(10), TIMER_BOOT);
+}
+
+DRIVER_INIT_MEMBER(plan80_state,plan80)
+{
+ UINT8 *RAM = memregion("maincpu")->base();
+ membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0xf800);
+}
+
+void plan80_state::video_start()
+{
+ m_p_chargen = memregion("chargen")->base();
+}
+
+UINT32 plan80_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ 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_SCREEN_PALETTE("palette")
+
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", plan80)
+ MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette")
+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", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)