/*
Dorachan (Dora-Chan ?) (c) 1980 Craul Denshi
Driver by Tomasz Slanina
Similar to Beam Invader
Todo:
- discrete sound
- dips (if any) - bits 5,6,7 of input port 0 ?
*/
#include "emu.h"
#include "cpu/z80/z80.h"
#define NUM_PENS (8)
class dorachan_state : public driver_device
{
public:
dorachan_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
/* memory pointers */
UINT8 * m_videoram;
size_t m_videoram_size;
/* video-related */
UINT8 m_flip_screen;
/* devices */
device_t *m_main_cpu;
};
/*************************************
*
* Protection handling
*
*************************************/
static CUSTOM_INPUT( dorachan_protection_r )
{
dorachan_state *state = field.machine().driver_data<dorachan_state>();
UINT8 ret = 0;
switch (cpu_get_previouspc(state->m_main_cpu))
{
case 0x70ce: ret = 0xf2; break;
case 0x72a2: ret = 0xd5; break;
case 0x72b5: ret = 0xcb; break;
default:
mame_printf_debug("unhandled $2400 read @ %x\n", cpu_get_previouspc(state->m_main_cpu));
break;
}
return ret;
}
/*************************************
*
* Video system
*
*************************************/
static void get_pens(pen_t *pens)
{
offs_t i;
for (i = 0; i < NUM_PENS; i++)
{
pens[i] = MAKE_RGB(pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0));
}
}
static SCREEN_UPDATE( dorachan )
{
dorachan_state *state = screen->machine().driver_data<dorachan_state>();
pen_t pens[NUM_PENS];
offs_t offs;
const UINT8 *color_map_base;
get_pens(pens);
color_map_base = screen->machine().region("proms")->base();
for (offs = 0; offs < state->m_videoram_size; offs++)
{
int i;
UINT8 fore_color;
UINT8 x = offs >> 8 << 3;
UINT8 y = offs & 0xff;
/* the need for +1 is extremely unusual, but definetely correct */
offs_t color_address = ((((offs << 2) & 0x03e0) | (offs >> 8)) + 1) & 0x03ff;
UINT8 data = state->m_videoram[offs];
if (state->m_flip_screen)
fore_color = (color_map_base[color_address] >> 3) & 0x07;
else
fore_color = (color_map_base[color_address] >> 0) & 0x07;
for (i = 0; i < 8; i++)
{
UINT8 color = (data & 0x01) ? fore_color : RGB_BLACK;
*BITMAP_ADDR32(bitmap, y, x) = pens[color];
data = data >> 1;
x = x + 1;
}
}
return 0;
}
static WRITE8_HANDLER(dorachan_ctrl_w)
{
dorachan_state *state = space->machine().driver_data<dorachan_state>();
state->m_flip_screen = (data >> 6) & 0x01;
}
static CUSTOM_INPUT( dorachan_v128_r )
{
dorachan_state *state = field.machine().driver_data<dorachan_state>();
/* to avoid resetting (when player 2 starts) bit 0 need to be inverted when screen is flipped */
return ((field.machine().primary_screen->vpos() >> 7) & 0x01) ^ state->m_flip_screen;
}
/*************************************
*
* Memory handlers
*
*************************************/
static ADDRESS_MAP_START( dorachan_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x17ff) AM_ROM
AM_RANGE(0x1800, 0x1fff) AM_RAM
AM_RANGE(0x2000, 0x23ff) AM_ROM
AM_RANGE(0x2400, 0x2400) AM_MIRROR(0x03ff) AM_READ_PORT("PROT")
AM_RANGE(0x2800, 0x2800) AM_MIRROR(0x03ff) AM_READ_PORT("SYSTEM")
AM_RANGE(0x2c00, 0x2c00) AM_MIRROR(0x03ff) AM_READ_PORT("JOY")
AM_RANGE(0x3800, 0x3800) AM_MIRROR(0x03ff) AM_READ_PORT("V128")
AM_RANGE(0x4000, 0x5fff) AM_RAM AM_BASE_SIZE_MEMBER(dorachan_state, m_videoram, m_videoram_size)
AM_RANGE(0x6000, 0x77ff) AM_ROM
ADDRESS_MAP_END
/*************************************
*
* Port handlers
*
*************************************/
static ADDRESS_MAP_START( dorachan_io_map, AS_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x01, 0x01) AM_WRITENOP
AM_RANGE(0x02, 0x02) AM_WRITENOP
AM_RANGE(0x03, 0x03) AM_WRITE(dorachan_ctrl_w)
ADDRESS_MAP_END
/*************************************
*
* Port definition
*
*************************************/
static INPUT_PORTS_START( dorachan )
PORT_START("PROT")
PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(dorachan_protection_r, NULL)
PORT_START("SYSTEM")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("JOY")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_COCKTAIL
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_COCKTAIL
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_COCKTAIL
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
PORT_START("V128")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(dorachan_v128_r, NULL)
PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END
/*************************************
*
* Machine driver
*
*************************************/
static MACHINE_START( dorachan )
{
dorachan_state *state = machine.driver_data<dorachan_state>();
state->m_main_cpu = machine.device("maincpu");
state->save_item(NAME(state->m_flip_screen));
}
static MACHINE_RESET( dorachan )
{
dorachan_state *state = machine.driver_data<dorachan_state>();
state->m_flip_screen = 0;
}
static MACHINE_CONFIG_START( dorachan, dorachan_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, 2000000)
MCFG_CPU_PROGRAM_MAP(dorachan_map)
MCFG_CPU_IO_MAP(dorachan_io_map)
MCFG_CPU_PERIODIC_INT(irq0_line_hold,2*60)
MCFG_MACHINE_START(dorachan)
MCFG_MACHINE_RESET(dorachan)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
MCFG_SCREEN_SIZE(32*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 1*8, 31*8-1)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_UPDATE(dorachan)
MACHINE_CONFIG_END
/*************************************
*
* ROM definition
*
*************************************/
ROM_START( dorachan )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "c1.e1", 0x0000, 0x0400, CRC(29d66a96) SHA1(a0297d87574af65c6ded99aeb377ac407f6f163f) )
ROM_LOAD( "d2.e2", 0x0400, 0x0400, CRC(144b6cd1) SHA1(195ce86e912a4b395097008c6d812fd75a1a2482) )
ROM_LOAD( "d3.e3", 0x0800, 0x0400, CRC(a9a1bed7) SHA1(98af6f851c4477f770b6bd67e5465b5a271311ee) )
ROM_LOAD( "d4.e5", 0x0c00, 0x0400, CRC(099ddf4b) SHA1(e4dd2b17a4320615204c66c24f60e58db13a5319) )
ROM_LOAD( "c5.e6", 0x1000, 0x0400, CRC(49449dab) SHA1(3627c16cc17fae9de2294a37602b726e107d0a13) )
ROM_LOAD( "d6.e7", 0x1400, 0x0400, CRC(5e409680) SHA1(f5e4d820c0f0493d724cd0d3da1113bccc09c2c3) )
ROM_LOAD( "c7.e8", 0x2000, 0x0400, CRC(b331a5ff) SHA1(1053953c76dddff450b9c9037e7797d50f9c7046) )
ROM_LOAD( "d8.rom", 0x6000, 0x0400, CRC(5fe1e731) SHA1(8e5dcb5f8d1d6f8c06808dd808f8bce7b07014ee) )
ROM_LOAD( "d9.rom", 0x6400, 0x0400, CRC(338881a8) SHA1(cd725b42c3f96826e94345698738f6b5a532d3d5) )
ROM_LOAD( "d10.rom", 0x6800, 0x0400, CRC(f8c59517) SHA1(655a976b1221e5aff69e0c0cc58d02c0b7bb6197) )
ROM_LOAD( "d11.rom", 0x6c00, 0x0400, CRC(c2e0f066) SHA1(be6b780a8957d945e5634ac9689b440a41e9a2a4) )
ROM_LOAD( "d12.rom", 0x7000, 0x0400, CRC(275e5dc1) SHA1(ac07db4b428daa49a52c679de95ddedbea0076b9) )
ROM_LOAD( "d13.rom", 0x7400, 0x0400, CRC(24ccfcf9) SHA1(85e5052ee657f518b0509eb64e494bc3a74e651e) )
ROM_REGION( 0x0400, "proms", 0 ) /* color map */
ROM_LOAD( "d14.rom", 0x0000, 0x0400, CRC(c0d3ee84) SHA1(f2207c685ce8d5144a373c28f11d2cebf9518b65) )
ROM_END
/*************************************
*
* Game driver
*
*************************************/
GAME( 1980, dorachan, 0, dorachan, dorachan, 0, ROT270, "Craul Denshi", "Dorachan", GAME_NO_SOUND | GAME_SUPPORTS_SAVE )