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// license:BSD-3-Clause
// copyright-holders:Nicola Salmoria, Ernesto Corvi
/***************************************************************************
IQ Block (c) 1992 IGS
Driver by Nicola Salmoria and Ernesto Corvi
TODO:
- Who generates IRQ and NMI? How many should there be per frame?
- Coin 2 doesn't work? DIP switch setting?
- Protection:
I can see it reading things like the R register here and there, so it might
be cycle-dependant or something.
'Crash 1' checks I was able to see:
PC = $52FA
PC = $507F
'Crash 2' checks I was able to see:
PC = $54E6
Stephh's notes :
- Coin 2 as well as buttons 2 to 4 for each player are only read in "test mode".
Same issue for Dip Switches 0-7 and 1-2 to 1-6.
Some other games on the same hardware might use them.
- Dip Switch 0 is stored at 0xf0ac and Dip Switch 1 is stored at 0xf0ad.
However they are both read back at the same time with "ld hl,($F0AC)" instructions.
- Dip Switches 0-0 and 0-1 are read via code at 0x9470.
This routine is called when you made a "line" after the routine that checks the score
for awarding extra help and/or changing background.
Data is coming from 4 possible tables (depending on them) which seem to be 0x84 bytes wide.
Table 0 offset is 0xeaf7.
IMO, this has something to do with difficulty but there is no confirmation about that !
- Dip Switch 1-0 is read only once after the P.O.S.T. via code at 0xa200.
It changes (or not) the contents of 0xf0db.w which can get these 2 possible values
at start : 0x47a3 (when OFF) or 0x428e (when ON) which seem to be tables.
If you set a WP to 0xf0db, you'll notice that it's called more often in the "demo mode"
when the Dip Switch is ON, so, as it implies writes to outport 0x50b0, I think it has
something to do with "Demo Sounds".
I can't tell however if setting the Dip Switch to OFF means "Demo Sounds" OFF or ON !
Grndtour:
- Title should flash 3X slowly. In MAME it flashes too fast, or strangely??
***************************************************************************/
#include "emu.h"
#include "includes/iqblock.h"
#include "cpu/z80/z80.h"
#include "machine/i8255.h"
#include "sound/ym2413.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
WRITE8_MEMBER(iqblock_state::iqblock_prot_w)
{
m_rambase[0xe26] = data;
m_rambase[0xe27] = data;
m_rambase[0xe1c] = data;
}
WRITE8_MEMBER(iqblock_state::grndtour_prot_w)
{
m_rambase[0xe39] = data;
m_rambase[0xe3a] = data;
m_rambase[0xe2f] = data;
}
TIMER_DEVICE_CALLBACK_MEMBER(iqblock_state::irq)
{
int scanline = param;
if((scanline % 16) != 0)
return;
if((scanline % 32) == 16)
m_maincpu->set_input_line(0, HOLD_LINE);
else if ((scanline % 32) == 0)
m_maincpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
}
WRITE8_MEMBER(iqblock_state::irqack_w)
{
m_maincpu->set_input_line(0, CLEAR_LINE);
}
WRITE8_MEMBER(iqblock_state::port_C_w)
{
/* bit 4 unknown; it is pulsed at the end of every NMI */
/* bit 5 seems to be 0 during screen redraw */
m_videoenable = data & 0x20;
/* bit 6 is coin counter */
machine().bookkeeping().coin_counter_w(0,data & 0x40);
/* bit 7 could be a second coin counter, but coin 2 doesn't seem to work... */
}
void iqblock_state::main_map(address_map &map)
{
map(0x0000, 0xefff).rom();
map(0xf000, 0xffff).ram().share("rambase");
}
void iqblock_state::main_portmap(address_map &map)
{
map(0x2000, 0x23ff).w("palette", FUNC(palette_device::write8)).share("palette");
map(0x2800, 0x2bff).w("palette", FUNC(palette_device::write8_ext)).share("palette_ext");
map(0x5080, 0x5083).rw("ppi8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0x5090, 0x5090).portr("SW0");
map(0x50a0, 0x50a0).portr("SW1");
map(0x50b0, 0x50b1).w("ymsnd", FUNC(ym2413_device::write)); // UM3567_data_port_0_w
map(0x50c0, 0x50c0).w(FUNC(iqblock_state::irqack_w));
map(0x6000, 0x603f).w(FUNC(iqblock_state::fgscroll_w));
map(0x6800, 0x69ff).w(FUNC(iqblock_state::fgvideoram_w)).share("fgvideoram"); /* initialized up to 6fff... bug or larger tilemap? */
map(0x7000, 0x7fff).ram().w(FUNC(iqblock_state::bgvideoram_w)).share("bgvideoram");
map(0x8000, 0xffff).rom().region("user1", 0);
}
static INPUT_PORTS_START( iqblock )
PORT_START("P1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) // "test mode" only
PORT_START("P2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 ) // "test mode" only
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL // "test mode" only
PORT_START("EXTRA")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 ) // "test mode" only
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON4 ) // "test mode" only
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_COCKTAIL // "test mode" only
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_COCKTAIL // "test mode" only
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("SW0")
PORT_DIPNAME( 0x03, 0x03, "Unknown SW 0-0&1" ) // Difficulty ? Read notes above
PORT_DIPSETTING( 0x03, "0" )
PORT_DIPSETTING( 0x02, "1" )
PORT_DIPSETTING( 0x01, "2" )
PORT_DIPSETTING( 0x00, "3" )
PORT_DIPNAME( 0x0c, 0x0c, "Helps" )
PORT_DIPSETTING( 0x0c, "1" )
PORT_DIPSETTING( 0x08, "2" )
PORT_DIPSETTING( 0x04, "3" )
PORT_DIPSETTING( 0x00, "4" )
PORT_DIPNAME( 0x70, 0x70, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x70, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x60, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x50, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x40, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x30, DEF_STR( 1C_6C ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("SW1")
PORT_DIPNAME( 0x01, 0x00, "Demo Sounds?" ) // To be confirmed ! Read notes above
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Free_Play ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END
static INPUT_PORTS_START( grndtour )
PORT_START("P1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_START("P2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
PORT_START("EXTRA")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON4 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_COCKTAIL
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("SW0")
PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x1c, 0x1c, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x04, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x1c, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x18, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x14, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_6C ) )
PORT_DIPNAME( 0x20, 0x00, "Attract Music" ) // NOT Demo Sounds (SFX are always played?)
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Free_Play ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, "Gal Images" )
PORT_DIPSETTING( 0x00, "No" )
PORT_DIPSETTING( 0x80, "Yes" )
PORT_START("SW1")
PORT_DIPNAME( 0x01, 0x01, "Allow P2 to Join / Always Split Screen" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
// in Level test mode the following select the start level, do they have any effect during normal gameplay?
PORT_DIPNAME( 0x02, 0x02, "Level Test +1" )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, "Level Test +2" )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, "Level Test +4" )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, "Level Test +8" )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, "Level Test +16" )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0xc0, 0xc0, "Test Mode" )
PORT_DIPSETTING( 0xc0, DEF_STR( Off ) )
PORT_DIPSETTING( 0x80, "Background Test" )
PORT_DIPSETTING( 0x40, "Input Test" )
PORT_DIPSETTING( 0x00, "Level Test / Debug Mode (use 5 above switches)" )
INPUT_PORTS_END
static const gfx_layout tilelayout1 =
{
8,8,
RGN_FRAC(1,3),
6,
{ 8, 0, RGN_FRAC(1,3)+8, RGN_FRAC(1,3)+0, RGN_FRAC(2,3)+8, RGN_FRAC(2,3)+0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
8*16
};
static const gfx_layout tilelayout2 =
{
8,32,
RGN_FRAC(1,2),
4,
{ 8, 0, RGN_FRAC(1,2)+8, RGN_FRAC(1,2)+0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16,
16*16, 17*16, 18*16, 19*16, 20*16, 21*16, 22*16, 23*16,
24*16, 25*16, 26*16, 27*16, 28*16, 29*16, 30*16, 31*16 },
32*16
};
#if 0
static const gfx_layout tilelayout3 =
{
8,32,
RGN_FRAC(1,3),
6,
{ 8, 0, RGN_FRAC(1,3)+8, RGN_FRAC(1,3)+0, RGN_FRAC(2,3)+8, RGN_FRAC(2,3)+0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16,
16*16, 17*16, 18*16, 19*16, 20*16, 21*16, 22*16, 23*16,
24*16, 25*16, 26*16, 27*16, 28*16, 29*16, 30*16, 31*16 },
32*16
};
#endif
static GFXDECODE_START( gfx_iqblock )
GFXDECODE_ENTRY( "gfx1", 0, tilelayout1, 0, 16 ) /* only odd color codes are used */
GFXDECODE_ENTRY( "gfx2", 0, tilelayout2, 0, 4 ) /* only color codes 0 and 3 used */
GFXDECODE_END
void iqblock_state::iqblock(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, 12000000/2); /* 6 MHz */
m_maincpu->set_addrmap(AS_PROGRAM, &iqblock_state::main_map);
m_maincpu->set_addrmap(AS_IO, &iqblock_state::main_portmap);
TIMER(config, "scantimer").configure_scanline(FUNC(iqblock_state::irq), "screen", 0, 1);
i8255_device &ppi(I8255A(config, "ppi8255"));
ppi.in_pa_callback().set_ioport("P1");
ppi.in_pb_callback().set_ioport("P2");
ppi.in_pc_callback().set_ioport("EXTRA");
ppi.out_pc_callback().set(FUNC(iqblock_state::port_C_w));
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(64*8, 32*8);
screen.set_visarea(0*8, 64*8-1, 0*8, 30*8-1);
screen.set_screen_update(FUNC(iqblock_state::screen_update));
screen.set_palette("palette");
GFXDECODE(config, m_gfxdecode, "palette", gfx_iqblock);
PALETTE(config, "palette").set_format(palette_device::xBGR_555, 1024);
/* sound hardware */
SPEAKER(config, "mono").front_center();
YM2413(config, "ymsnd", 3'579'545).add_route(ALL_OUTPUTS, "mono", 1.0);
}
/***************************************************************************
Game driver(s)
***************************************************************************/
/*
IQ-Block
IGS 1993
PCB 0036-5
SW1 SW2
12MHz W2466 8255
IGS002 U24.5
U25.4 AMT001 6116-45
6116-45
Z80 U26.3
U27.2
U7.V5 U28.1
U8.6
W2466
UMC UM3567
*/
ROM_START( iqblock )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "u7.v5", 0x0000, 0x10000, CRC(811f306e) SHA1(d0aef80f1624002d05721276358f26a3ef69a3f6) )
ROM_REGION( 0x8000, "user1", 0 )
ROM_LOAD( "u8.6", 0x0000, 0x8000, CRC(2651bc27) SHA1(53e1d6ffd78c8a612863b29b0f8734e740d563c7) ) /* background maps, read by the CPU */
ROM_REGION( 0x60000, "gfx1", 0 )
ROM_LOAD( "u28.1", 0x00000, 0x20000, CRC(ec4b64b4) SHA1(000e9df0c0b5fcde5ead218dfcdc156bc4be909d) )
ROM_LOAD( "u27.2", 0x20000, 0x20000, CRC(74aa3de3) SHA1(16757c24765d22026793a0c53d3f24c106951a18) )
ROM_LOAD( "u26.3", 0x40000, 0x20000, CRC(2896331b) SHA1(51eba9f9f653a11cb96c461ab495d943d34cedc6) )
ROM_REGION( 0x8000, "gfx2", 0 )
ROM_LOAD( "u25.4", 0x0000, 0x4000, CRC(8fc222af) SHA1(ac1fb5e6caec391a76e3af51e133aecc65cd5aed) )
ROM_LOAD( "u24.5", 0x4000, 0x4000, CRC(61050e1e) SHA1(1f7185b2a5a2e237120276c95344744b146b4bf6) )
ROM_END
/*
Grand Tour
IGS, 1993
This game probably runs on the same board as IGS's IQ Block.
Two of the PALs are labelled GRAND3 and GRAND4. However, there may be other
games that run on this same PCB also, since three of the PALs are
labelled AF1, AF2 and AF3, meaning the main/first game to run on this
hardware was called A-something F-something.
PCB Layout
----------
IGS PCB N0. 0036-5
----------------------------------------------
| 6264 |
| UM3567 GRAND6 |
| 3.579545MHz GRAND1 |
| GRAND7 |
| GRAND2 |
|J |
|A GRAND3 |
|M Z80 |
|M GRAND4 |
|A PAL |
| 6116 GRAND5 |
| 6116 IGS001 IGS002 PAL |
| 6264 |
| PAL |
| 8255 PAL |
| PAL 12MHz |
| DSW2(8) DSW1(8) |
----------------------------------------------
Notes:
Z80 clock: 5.997MHz
VSync: 60Hz
HSync: 15.21kHz
UM3567 compatible with YM2413
*/
ROM_START( grndtour )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "grand7.u7", 0x0000, 0x10000, CRC(95cac31e) SHA1(47bbcce6981ea3d38e0aa49ccd3762a4529f3c96) )
ROM_REGION( 0x8000, "user1", 0 )
ROM_LOAD( "grand6.u8", 0x0000, 0x8000, CRC(4c634b86) SHA1(c36df147187bc526f2348bc2f4d4c4e35bb45f38) ) /* background maps, read by the CPU */
ROM_REGION( 0xc0000, "gfx1", 0 )
ROM_LOAD( "grand1.u28", 0x00000, 0x40000, CRC(de85c664) SHA1(3a4b0cac88a0fea1c80541fe49c799e3550bedee) )
ROM_LOAD( "grand2.u27", 0x40000, 0x40000, CRC(8456204e) SHA1(b604d501f360670f57b937ad96af64c1c2038ef7) )
ROM_LOAD( "grand3.u26", 0x80000, 0x40000, CRC(77632917) SHA1(d91eadec2e0fb3082299362d18814b8ec4c5e068) )
ROM_REGION( 0x8000, "gfx2", 0 )
ROM_LOAD( "grand4.u25", 0x0000, 0x4000, CRC(48d09746) SHA1(64669f572b9a98b078ee1ea0b614c117e5dfbec9) )
ROM_LOAD( "grand5.u24", 0x4000, 0x4000, CRC(f896efb2) SHA1(8dc8546e363b4ff80983e3b8e2a19ebb7ff30c7b) )
ROM_END
void iqblock_state::init_iqblock()
{
uint8_t *rom = memregion("maincpu")->base();
/* decrypt the program ROM */
for (int i = 0; i < 0xf000; i++)
{
if ((i & 0x0282) != 0x0282) rom[i] ^= 0x01;
if ((i & 0x0940) == 0x0940) rom[i] ^= 0x02;
if ((i & 0x0090) == 0x0010) rom[i] ^= 0x20;
}
m_maincpu->space(AS_PROGRAM).install_write_handler(0xfe26, 0xfe26, write8_delegate(*this, FUNC(iqblock_state::iqblock_prot_w)));
m_video_type=1;
}
void iqblock_state::init_grndtour()
{
uint8_t *rom = memregion("maincpu")->base();
/* decrypt the program ROM */
for (int i = 0; i < 0xf000; i++)
{
if ((i & 0x0282) != 0x0282) rom[i] ^= 0x01;
if ((i & 0x0940) == 0x0940) rom[i] ^= 0x02;
if ((i & 0x0060) == 0x0040) rom[i] ^= 0x20;
}
m_maincpu->space(AS_PROGRAM).install_write_handler(0xfe39, 0xfe39, write8_delegate(*this, FUNC(iqblock_state::grndtour_prot_w)));
m_video_type=0;
}
GAME( 1993, iqblock, 0, iqblock, iqblock, iqblock_state, init_iqblock, ROT0, "IGS", "IQ-Block (V100U)", MACHINE_SUPPORTS_SAVE )
GAME( 1993, grndtour, 0, iqblock, grndtour, iqblock_state, init_grndtour, ROT0, "IGS", "Grand Tour (V100U)", MACHINE_SUPPORTS_SAVE )
You can’t perform that action at this time.