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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;
- Challenge Golf: has gfx and input bugs (starts with home/end keys!?);
- Colours are incorrect
Notes:
- BS-BASIC v1.0 notes:
-- COLOR x doesn't do anything. It sets a memory location with x, but does nothing with it.
-- COLOR x,y where y sets the background colour. This part works.
-- When BASIC is first started, it sets the colours but doesn't save the information. So when
COLOR x is entered, although x has no effect, it also sets the background colour, which not
having been set, sets the background black.
-- At the first scroll, the display memory is disrupted in the logo area, probably another
btanb. After that, scrolling works correctly.
-- Need a real machine to confirm these problems, but if true, one can only wonder how such
obvious issues made it out the door.
- To stop a cmt load, press STOP + SHIFT keys
Known programs:
- BS_BASIC V1.0
- Challenge Golf
- Excite Tennis
- Excite Baseball
- Perfect Mah-Jongg
- Mobile Suit (says Mobil Suit on the start screen)
- The ProWrestling
- 3-dimension graphics
==============================================================================================================
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 "machine/ram.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
#include "emupal.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.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")
{ }
void init_rx78();
void rx78(machine_config &config);
private:
DECLARE_READ8_MEMBER( key_r );
DECLARE_READ8_MEMBER( cass_r );
DECLARE_READ8_MEMBER( vram_r );
DECLARE_WRITE8_MEMBER( cass_w );
DECLARE_WRITE8_MEMBER( 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 );
DECLARE_DEVICE_IMAGE_LOAD_MEMBER( cart_load );
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
virtual void machine_reset() override;
void rx78_io(address_map &map);
void rx78_mem(address_map &map);
uint8_t m_vram_read_bank;
uint8_t m_vram_write_bank;
uint8_t m_pal_reg[7];
uint8_t m_pri_mask;
uint8_t m_key_mux;
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;
};
#define MASTER_CLOCK XTAL(28'636'363)
WRITE8_MEMBER( rx78_state::cass_w )
{
m_cass->output(BIT(data, 0) ? -1.0 : +1.0);
}
READ8_MEMBER( rx78_state::cass_r )
{
return (m_cass->input() > 0.03);
}
uint32_t rx78_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
uint8_t *vram = memregion("vram")->base();
int color,pen[3];
const int borderx = 32, bordery = 20;
bitmap.fill(16, cliprect);
int count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
for(u8 y=0; y<184; y++)
{
for(u8 x=0; x<192; x+=8)
{
for (u8 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+bordery, x+i+borderx) = color | 8;
/* 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+bordery, x+i+borderx) = 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
{
u8 res = 0;
for(u8 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::vram_r )
{
uint8_t *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::vram_w )
{
uint8_t *vram = memregion("vram")->base();
for (u8 i = 0; i < 6; i++)
if (BIT(m_vram_write_bank, i))
vram[offset + i * 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_t 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;
}
void rx78_state::rx78_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x1fff).rom().region("roms", 0);
//map(0x2000, 0x5fff) // mapped by the cartslot
map(0x6000, 0xafff).ram(); //ext RAM
map(0xb000, 0xebff).ram();
map(0xec00, 0xffff).rw(FUNC(rx78_state::vram_r), FUNC(rx78_state::vram_w));
}
void rx78_state::rx78_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
// map(0xe2, 0xe2).noprw(); //printer
// map(0xe3, 0xe3).nopw(); //printer
map(0xf0, 0xf0).rw(FUNC(rx78_state::cass_r), FUNC(rx78_state::cass_w)); //cmt
map(0xf1, 0xf1).w(FUNC(rx78_state::vram_read_bank_w));
map(0xf2, 0xf2).w(FUNC(rx78_state::vram_write_bank_w));
map(0xf4, 0xf4).rw(FUNC(rx78_state::key_r), FUNC(rx78_state::key_w)); //keyboard
map(0xf5, 0xfb).w(FUNC(rx78_state::vdp_reg_w)); //vdp
map(0xfc, 0xfc).w(FUNC(rx78_state::vdp_bg_reg_w)); //vdp
map(0xfe, 0xfe).w(FUNC(rx78_state::vdp_pri_mask_w));
map(0xff, 0xff).w("sn1", FUNC(sn76489a_device::write)); //psg
}
/* 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("CLR / HOME") 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("SFT 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, read8sm_delegate(*m_cart, FUNC(generic_slot_device::read_rom)));
}
DEVICE_IMAGE_LOAD_MEMBER( rx78_state::cart_load )
{
uint32_t size = m_cart->common_get_size("rom");
if (size != 0x2000 && size != 0x4000)
{
image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
return image_init_result::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_result::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( gfx_rx78 )
GFXDECODE_ENTRY( "roms", 0x1a27, rx78_charlayout, 0, 8 )
GFXDECODE_END
void rx78_state::rx78(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, MASTER_CLOCK/7); // unknown divider
m_maincpu->set_addrmap(AS_PROGRAM, &rx78_state::rx78_mem);
m_maincpu->set_addrmap(AS_IO, &rx78_state::rx78_io);
m_maincpu->set_vblank_int("screen", FUNC(rx78_state::irq0_line_hold));
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
// screen.set_refresh_hz(60);
// screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
// screen.set_size(192, 184);
// screen.set_visarea(0, 192-1, 0, 184-1);
/* guess: generic NTSC video timing at 256x224, system runs at 192x184, suppose with some border area to compensate */
screen.set_raw(MASTER_CLOCK/4, 442, 0, 256, 263, 0, 224);
screen.set_screen_update(FUNC(rx78_state::screen_update));
screen.set_palette("palette");
PALETTE(config, m_palette).set_entries(16+1); //+1 for the background color
GFXDECODE(config, "gfxdecode", m_palette, gfx_rx78);
GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "rx78_cart", "bin,rom").set_device_load(FUNC(rx78_state::cart_load));
RAM(config, RAM_TAG).set_default_size("32K").set_extra_options("16K");
SPEAKER(config, "mono").front_center();
SN76489A(config, "sn1", XTAL(28'636'363)/8).add_route(ALL_OUTPUTS, "mono", 0.50); // unknown divider
CASSETTE(config, m_cass);
m_cass->add_route(ALL_OUTPUTS, "mono", 0.05);
/* Software lists */
SOFTWARE_LIST(config, "cart_list").set_original("rx78");
}
/* ROM definition */
ROM_START( rx78 )
ROM_REGION( 0x2000, "roms", 0 )
ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(a194ea53) SHA1(ba39e73e6eb7cbb8906fff1f81a98964cd62af0d))
ROM_REGION( 6 * 0x2000, "vram", ROMREGION_ERASE00 )
ROM_END
void rx78_state::init_rx78()
{
uint32_t 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, init_rx78, "Bandai", "Gundam RX-78", MACHINE_NOT_WORKING )
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