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Diffstat (limited to 'src/mame/drivers/rx78.c')
-rw-r--r--src/mame/drivers/rx78.c513
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diff --git a/src/mame/drivers/rx78.c b/src/mame/drivers/rx78.c
new file mode 100644
index 00000000000..be2f20e388b
--- /dev/null
+++ b/src/mame/drivers/rx78.c
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+// license:BSD-3-Clause
+// copyright-holders:Angelo Salese, Robbbert
+/************************************************************************************************************
+
+ Gundam RX-78 (c) 1983 Bandai
+
+ driver by Angelo Salese & Robbbert.
+
+ TODO:
+ - implement printer
+
+ Notes:
+ - BS-BASIC v1.0 have a graphic bug with the RX-78 logo, it doesn't set the read bank so all of the color
+ info minus plane 1 is lost when the screen scrolls vertically. Almost certainly a btanb.
+ - To stop a cmt load, press STOP + SHIFT keys
+
+==============================================================================================================
+ Summary of Monitor commands.
+ - The monitor is entered at bootup. The prompt is the * character. This is followed by a command
+ letter (upper case). Some commands require hex parameters. You must enter all 4 characters of
+ these. No spaces allowed except where shown.
+ - While in BASIC, you may enter the monitor by using the MON command. After you have finished,
+ you can return to BASIC by entering the command *J2005.
+
+ - Tape commands:
+ *L Load a tape
+ *V Verify a tape
+ *S Save a block of memory to tape. You are asked for a filename (blank is allowed), the start address,
+ the end address, and the Jump address (where it should begin execution)
+
+ - Memory commands:
+ *Dnnnn nnnn Displays a hex dump in the address range entered
+ *Mnnnn Allows you to examine and modify memory. Enter to skip to next, period (.) to quit.
+ *Jnnnn Transfer execution (Jump) to a program in memory at the specified address
+
+ - Other:
+ *R This is a block transfer load from a mystery parallel device, using ports E0 and E1,
+ using handshaking similar to a centronics printer. The incoming file is loaded into
+ memory and it appears that the operator is not provided any information of what happened.
+
+*************************************************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "sound/sn76496.h"
+#include "imagedev/cassette.h"
+#include "sound/wave.h"
+#include "machine/ram.h"
+#include "bus/generic/slot.h"
+#include "bus/generic/carts.h"
+
+
+class rx78_state : public driver_device
+{
+public:
+ rx78_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_cass(*this, "cassette"),
+ m_cart(*this, "cartslot"),
+ m_ram(*this, RAM_TAG),
+ m_palette(*this, "palette")
+ { }
+
+ DECLARE_READ8_MEMBER( key_r );
+ DECLARE_READ8_MEMBER( rx78_f0_r );
+ DECLARE_READ8_MEMBER( rx78_vram_r );
+ DECLARE_WRITE8_MEMBER( rx78_f0_w );
+ DECLARE_WRITE8_MEMBER( rx78_vram_w );
+ DECLARE_WRITE8_MEMBER( vram_read_bank_w );
+ DECLARE_WRITE8_MEMBER( vram_write_bank_w );
+ DECLARE_WRITE8_MEMBER( key_w );
+ DECLARE_WRITE8_MEMBER( vdp_reg_w );
+ DECLARE_WRITE8_MEMBER( vdp_bg_reg_w );
+ DECLARE_WRITE8_MEMBER( vdp_pri_mask_w );
+ UINT8 m_vram_read_bank;
+ UINT8 m_vram_write_bank;
+ UINT8 m_pal_reg[7];
+ UINT8 m_pri_mask;
+ UINT8 m_key_mux;
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ DECLARE_DRIVER_INIT(rx78);
+ required_device<cpu_device> m_maincpu;
+ required_device<cassette_image_device> m_cass;
+ required_device<generic_slot_device> m_cart;
+ required_device<ram_device> m_ram;
+ required_device<palette_device> m_palette;
+ DECLARE_DEVICE_IMAGE_LOAD_MEMBER( rx78_cart );
+};
+
+
+#define MASTER_CLOCK XTAL_28_63636MHz
+
+
+WRITE8_MEMBER( rx78_state::rx78_f0_w )
+{
+ m_cass->output(BIT(data, 0) ? -1.0 : +1.0);
+}
+
+READ8_MEMBER( rx78_state::rx78_f0_r )
+{
+ return (m_cass->input() > 0.03);
+}
+
+
+void rx78_state::video_start()
+{
+}
+
+UINT32 rx78_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ UINT8 *vram = memregion("vram")->base();
+ int x,y,count;
+
+ bitmap.fill(16, cliprect);
+
+ count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
+
+ for(y=0;y<184;y++)
+ {
+ for(x=0;x<192;x+=8)
+ {
+ int color,pen[3],i;
+
+ for (i = 0; i < 8; i++)
+ {
+ /* bg color */
+ pen[0] = (m_pri_mask & 0x08) ? (vram[count + 0x6000] >> (i)) : 0x00;
+ pen[1] = (m_pri_mask & 0x10) ? (vram[count + 0x8000] >> (i)) : 0x00;
+ pen[2] = (m_pri_mask & 0x20) ? (vram[count + 0xa000] >> (i)) : 0x00;
+
+ color = ((pen[0] & 1) << 0);
+ color |= ((pen[1] & 1) << 1);
+ color |= ((pen[2] & 1) << 2);
+
+ if(color)
+ bitmap.pix16(y, x+i) = color;
+
+ /* fg color */
+ pen[0] = (m_pri_mask & 0x01) ? (vram[count + 0x0000] >> (i)) : 0x00;
+ pen[1] = (m_pri_mask & 0x02) ? (vram[count + 0x2000] >> (i)) : 0x00;
+ pen[2] = (m_pri_mask & 0x04) ? (vram[count + 0x4000] >> (i)) : 0x00;
+
+ color = ((pen[0] & 1) << 0);
+ color |= ((pen[1] & 1) << 1);
+ color |= ((pen[2] & 1) << 2);
+
+ if(color)
+ bitmap.pix16(y, x+i) = color;
+ }
+ count++;
+ }
+ }
+
+ return 0;
+}
+
+
+READ8_MEMBER( rx78_state::key_r )
+{
+ static const char *const keynames[] = { "KEY0", "KEY1", "KEY2", "KEY3",
+ "KEY4", "KEY5", "KEY6", "KEY7",
+ "KEY8", "JOY1P_0","JOY1P_1","JOY1P_2",
+ "JOY2P_0", "JOY2P_1", "JOY2P_2", "UNUSED" };
+
+ if(m_key_mux == 0x30) //status read
+ {
+ int res,i;
+
+ res = 0;
+ for(i=0;i<15;i++)
+ res |= ioport(keynames[i])->read();
+
+ return res;
+ }
+
+ if(m_key_mux >= 1 && m_key_mux <= 15)
+ return ioport(keynames[m_key_mux - 1])->read();
+
+ return 0;
+}
+
+WRITE8_MEMBER( rx78_state::key_w )
+{
+ m_key_mux = data;
+}
+
+READ8_MEMBER( rx78_state::rx78_vram_r )
+{
+ UINT8 *vram = memregion("vram")->base();
+
+ if(m_vram_read_bank == 0 || m_vram_read_bank > 6)
+ return 0xff;
+
+ return vram[offset + ((m_vram_read_bank - 1) * 0x2000)];
+}
+
+WRITE8_MEMBER( rx78_state::rx78_vram_w )
+{
+ UINT8 *vram = memregion("vram")->base();
+
+ if(m_vram_write_bank & 0x01) { vram[offset + 0 * 0x2000] = data; }
+ if(m_vram_write_bank & 0x02) { vram[offset + 1 * 0x2000] = data; }
+ if(m_vram_write_bank & 0x04) { vram[offset + 2 * 0x2000] = data; }
+ if(m_vram_write_bank & 0x08) { vram[offset + 3 * 0x2000] = data; }
+ if(m_vram_write_bank & 0x10) { vram[offset + 4 * 0x2000] = data; }
+ if(m_vram_write_bank & 0x20) { vram[offset + 5 * 0x2000] = data; }
+}
+
+WRITE8_MEMBER( rx78_state::vram_read_bank_w )
+{
+ m_vram_read_bank = data;
+}
+
+WRITE8_MEMBER( rx78_state::vram_write_bank_w )
+{
+ m_vram_write_bank = data;
+}
+
+WRITE8_MEMBER( rx78_state::vdp_reg_w )
+{
+ UINT8 r,g,b,res,i;
+
+ m_pal_reg[offset] = data;
+
+ for(i=0;i<16;i++)
+ {
+ res = ((i & 1) ? m_pal_reg[0 + (i & 8 ? 3 : 0)] : 0) | ((i & 2) ? m_pal_reg[1 + (i & 8 ? 3 : 0)] : 0) | ((i & 4) ? m_pal_reg[2 + (i & 8 ? 3 : 0)] : 0);
+ if(res & m_pal_reg[6]) //color mask, TODO: check this
+ res &= m_pal_reg[6];
+
+ r = (res & 0x11) == 0x11 ? 0xff : ((res & 0x11) == 0x01 ? 0x7f : 0x00);
+ g = (res & 0x22) == 0x22 ? 0xff : ((res & 0x22) == 0x02 ? 0x7f : 0x00);
+ b = (res & 0x44) == 0x44 ? 0xff : ((res & 0x44) == 0x04 ? 0x7f : 0x00);
+
+ m_palette->set_pen_color(i, rgb_t(r,g,b));
+ }
+}
+
+WRITE8_MEMBER( rx78_state::vdp_bg_reg_w )
+{
+ int r,g,b;
+
+ r = (data & 0x11) == 0x11 ? 0xff : ((data & 0x11) == 0x01 ? 0x7f : 0x00);
+ g = (data & 0x22) == 0x22 ? 0xff : ((data & 0x22) == 0x02 ? 0x7f : 0x00);
+ b = (data & 0x44) == 0x44 ? 0xff : ((data & 0x44) == 0x04 ? 0x7f : 0x00);
+
+ m_palette->set_pen_color(0x10, rgb_t(r,g,b));
+}
+
+WRITE8_MEMBER( rx78_state::vdp_pri_mask_w )
+{
+ m_pri_mask = data;
+}
+
+
+static ADDRESS_MAP_START(rx78_mem, AS_PROGRAM, 8, rx78_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x1fff) AM_ROM
+ //AM_RANGE(0x2000, 0x5fff) // mapped by the cartslot
+ AM_RANGE(0x6000, 0xafff) AM_RAM //ext RAM
+ AM_RANGE(0xb000, 0xebff) AM_RAM
+ AM_RANGE(0xec00, 0xffff) AM_READWRITE(rx78_vram_r, rx78_vram_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(rx78_io, AS_IO, 8, rx78_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+// AM_RANGE(0xe2, 0xe2) AM_READNOP AM_WRITENOP //printer
+// AM_RANGE(0xe3, 0xe3) AM_WRITENOP //printer
+ AM_RANGE(0xf0, 0xf0) AM_READWRITE(rx78_f0_r,rx78_f0_w) //cmt
+ AM_RANGE(0xf1, 0xf1) AM_WRITE(vram_read_bank_w)
+ AM_RANGE(0xf2, 0xf2) AM_WRITE(vram_write_bank_w)
+ AM_RANGE(0xf4, 0xf4) AM_READWRITE(key_r,key_w) //keyboard
+ AM_RANGE(0xf5, 0xfb) AM_WRITE(vdp_reg_w) //vdp
+ AM_RANGE(0xfc, 0xfc) AM_WRITE(vdp_bg_reg_w) //vdp
+ AM_RANGE(0xfe, 0xfe) AM_WRITE(vdp_pri_mask_w)
+ AM_RANGE(0xff, 0xff) AM_DEVWRITE("sn1", sn76489a_device, write) //psg
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( rx78 )
+ PORT_START("KEY0")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+
+ PORT_START("KEY1")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(":") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(";") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+
+ PORT_START("KEY2")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("@") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('@') PORT_CHAR('`')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
+
+ PORT_START("KEY3")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')
+
+ PORT_START("KEY4")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
+
+ PORT_START("KEY5")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("[") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("\\") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("]") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Up Down Arrow") PORT_CODE(KEYCODE_PGUP)
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Right Left Arrow") PORT_CODE(KEYCODE_PGDN)
+
+ PORT_START("KEY6")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN)
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP)
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT)
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT)
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("HOME / CLR") PORT_CODE(KEYCODE_HOME)
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_UNUSED )
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("INST / DEL") PORT_CODE(KEYCODE_BACKSPACE)
+
+ PORT_START("KEY7")
+ PORT_BIT(0x07,IP_ACTIVE_HIGH,IPT_UNUSED )
+ PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("STOP") PORT_CODE(KEYCODE_END)
+ PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_UNUSED )
+ PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_UNUSED )
+ PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_CAPSLOCK)
+
+ PORT_START("KEY8")
+ PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) //kana shift?
+ PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_UNUSED )
+ PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0xf8,IP_ACTIVE_HIGH,IPT_UNUSED )
+
+ PORT_START("JOY1P_0")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Up Left") PORT_PLAYER(1)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1)
+
+ PORT_START("JOY1P_1")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Down Left") PORT_PLAYER(1)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Up Right") PORT_PLAYER(1)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("JOY1P_2")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Down Right") PORT_PLAYER(1)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(1)
+
+ PORT_START("JOY2P_0")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Up Left") PORT_PLAYER(2)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
+
+ PORT_START("JOY2P_1")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Down Left") PORT_PLAYER(2)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Up Right") PORT_PLAYER(2)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("JOY2P_2")
+ PORT_BIT( 0x11, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x22, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Down Right") PORT_PLAYER(2)
+ PORT_BIT( 0x44, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x88, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
+
+ PORT_START("UNUSED")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+void rx78_state::machine_reset()
+{
+ address_space &prg = m_maincpu->space(AS_PROGRAM);
+ if (m_cart->exists())
+ prg.install_read_handler(0x2000, 0x5fff, read8_delegate(FUNC(generic_slot_device::read_rom),(generic_slot_device*)m_cart));
+}
+
+DEVICE_IMAGE_LOAD_MEMBER( rx78_state, rx78_cart )
+{
+ UINT32 size = m_cart->common_get_size("rom");
+
+ if (size != 0x2000 && size != 0x4000)
+ {
+ image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
+ return IMAGE_INIT_FAIL;
+ }
+
+ m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE);
+ m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");
+
+ return IMAGE_INIT_PASS;
+}
+
+/* F4 Character Displayer */
+static const gfx_layout rx78_charlayout =
+{
+ 8, 8, /* 8 x 8 characters */
+ 187, /* 187 characters */
+ 1, /* 1 bits per pixel */
+ { 0 }, /* no bitplanes */
+ /* x offsets */
+ { 7, 6, 5, 4, 3, 2, 1, 0 },
+ /* 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( rx78 )
+ GFXDECODE_ENTRY( "maincpu", 0x1a27, rx78_charlayout, 0, 8 )
+GFXDECODE_END
+
+
+static MACHINE_CONFIG_START( rx78, rx78_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, MASTER_CLOCK/7) // unknown divider
+ MCFG_CPU_PROGRAM_MAP(rx78_mem)
+ MCFG_CPU_IO_MAP(rx78_io)
+ MCFG_CPU_VBLANK_INT_DRIVER("screen", rx78_state, irq0_line_hold)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_UPDATE_DRIVER(rx78_state, screen_update)
+ MCFG_SCREEN_SIZE(192, 184)
+ MCFG_SCREEN_VISIBLE_AREA(0, 192-1, 0, 184-1)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 16+1) //+1 for the background color
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", rx78)
+
+ MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "rx78_cart")
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_LOAD(rx78_state, rx78_cart)
+
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("32k")
+ MCFG_RAM_EXTRA_OPTIONS("16k")
+
+ MCFG_CASSETTE_ADD( "cassette" )
+
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MCFG_SOUND_ADD("sn1", SN76489A, XTAL_28_63636MHz/8) // unknown divider
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+
+ /* Software lists */
+ MCFG_SOFTWARE_LIST_ADD("cart_list","rx78")
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( rx78 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(a194ea53) SHA1(ba39e73e6eb7cbb8906fff1f81a98964cd62af0d))
+
+ ROM_REGION( 6 * 0x2000, "vram", ROMREGION_ERASE00 )
+ROM_END
+
+DRIVER_INIT_MEMBER(rx78_state,rx78)
+{
+ UINT32 ram_size = m_ram->size();
+ address_space &prg = m_maincpu->space(AS_PROGRAM);
+
+ if (ram_size == 0x4000)
+ prg.unmap_readwrite(0x6000, 0xafff);
+}
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 1983, rx78, 0, 0, rx78, rx78, rx78_state, rx78, "Bandai", "Gundam RX-78", 0)