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-rw-r--r--src/mame/drivers/exerion.cpp625
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diff --git a/src/mame/drivers/exerion.cpp b/src/mame/drivers/exerion.cpp
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--- a/src/mame/drivers/exerion.cpp
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-// license:BSD-3-Clause
-// copyright-holders:Aaron Giles
-/***************************************************************************
-
- Jaleco Exerion hardware
-
-****************************************************************************
-
- Exerion is a unique driver in that it has idiosyncrasies that are straight
- out of Bizarro World. I submit for your approval:
-
- * The mystery reads from $d802 - timer-based protection?
- * The freakish graphics encoding scheme, which no other MAME-supported game uses
- * The sprite-ram, and all the funky parameters that go along with it
-
-
-Stephh's notes (based on the games Z80 code and some tests) :
-
-1) 'exerion'
-
- - The coin insertion routine (code at 0x0066) is buggy as you get a credit
- on first coin after initialisation even if you need more than 1 coin for 1 credit :
- * when coinage is set to 2C_1C, you get a credit when inserting
- 1, 2, 4, 6 ... multiples of 2 coins
- * when coinage is set to 3C_1C, you get a credit when inserting
- 1, 3, 6, 9 ... multiples of 3 coins
- * when coinage is set to 4C_1C, you get a credit when inserting
- 1, 4, 8, 12 ... multiples of 4 coins
- * when coinage is set to 5C_1C, you get a credit when inserting
- 1, 5, 10, 15 ... multiples of 5 coins
- - According to the Dip Switches sheet, difficulty is handled by DSW0 bits 5 and 6.
- In fact, bit 6 determines the overall difficulty (0x40 = OFF easy - 0x00 = ON hard)
- while bit 5 determines enemies' number of bullets (0x20 = OFF for less bullets and
- 0x00 = ON for more bullets).
- - When starting a 1 or 2 players game, 2 checksums are computed (code at 0x00e4) :
- one from 0x05f0 to 0x06ee (stored at 0x6030), one from 0x00d8 to 0x01d6 (stored
- at 0x6031). Contents of 0x0625 is also stored to 0x6032.
- - Each time before attract mode sequence starts, a checksum is computed from 0x0000
- to 0x1fff (code at 0x28b8) if 17th score in the high-score table is not 0.
- If checksum doesn't match the hardcoded value (0xb5), you get one more credit
- and you are allowed to continue the game with an extra life (score, charge and
- level are not reset to original values).
- - At the beginning of each life of each player, a checksum is computed from 0x4100
- to 0x4dff (code at 0x07d8) if 1st score in the high-score table is >= 80000.
- If checksum doesn't match the hardcoded value (0x63), you get 255 credits !
- Notice that the displayed number of credits won't be correct as the game
- isn't suppose to allow more than 9 credits.
- - In a 2 players game, when player changes, if player it was player 2 turn,
- values from 0x6030 to 0x6032 (see above) are compared with hard-coded values
- (code at 0x04c8). If they don't match respectively 0xfe, 0xb3 and 0x4c,
- and if 9th score in the high-score table is not 0, the game resets !
- - Before entering player's initials, a checksum is computed from 0x5f00 to 0x5fff
- (code at 0x5bd0) if player has reached level 6 (2nd kind of enemies after bonus
- stage). If checksum doesn't match the hardcoded value (0x9a), the game resets !
- - There is sort of protection routine at 0x4120 which has an effect when
- player loses a life on reaching first bonus stage or after. If values read
- from 0x6008 to 0x600b don't match values from ROM area 0x33c0-0x33ff,
- the game resets. See 'exerion_protection_r' read handler.
- - There is an unknown routine at 0x5f70 which is called when the game boots
- which reads value from 0x600c and see if it matches a hardcoded value (0xbe).
- If they don't match, the game resets after displaying the high-scores table.
- - There is another unknown routine at 0x414e which is called when a game is over
- which reads value from 0x600c and see if it matches value from ROM area
- 0x4000-0x400f based on internal timer value for a game at 0x604a. If they don't
- match, its only effect is to set lives to 0, which is always the case when the
- game is over, so it doesn't seem to have any real effect.
- Was it supposed to be called at another time ?
- - The routine at 0x5f90 writes to addresses 0x6008-0x600c values read from AY port A
- (one write after one read). This routine is called by the 2 unknown routines.
-
-2) 'exeriont'
-
- - The coin insertion routine is fixed in this set (see the subttle changes
- in the code from 0x0077 to 0x0082).
- - The routine at 0x28b8 is the same as in 'exerion' (same hardcoded value).
- - The routine at 0x07d8 is the same as in 'exerion' (same hardcoded value).
- - The routine at 0x04c8 is the same as in 'exerion' (same hardcoded values).
- - The routine at 0x5bd0 is the same as in 'exerion' (same hardcoded value).
- - The routine at 0x4120 is the same as in 'exerion', but data from 0x33c0 to 0x33ff
- is slightly different :
-
- address exerion exeriont
- 0x33c1: 0x3e 0x36
- 0x33c2: 0x37 0x32
- 0x33c8: 0x76 0x7e
- 0x33ca: 0x32 0x26
- 0x33cb: 0x34 0x1e
- 0x33d5: 0x07 0x3f
- 0x33fc: 0x76 0x40
- 0x33fd: 0x37 0x00
- 0x33fe: 0x32 0x00
- 0x33ff: 0x26 0x00
-
- - The routine at 0x5f70 is similar to the one in 'exerion' (hardcoded value = 0x9e).
- - The routine at 0x414e is the same as in 'exerion', but data from 0x4000 to 0x400f
- is slightly different :
-
- address exerion exeriont
- 0x4002: 0xb2 0x9e
- 0x400f: 0xbe 0x9e
-
- - The routine at 0x5f90 is the same as in 'exerion'.
-
-3) 'exerionb'
-
- - This set is based on 'exerion' as the coin insertion routine at 0x0066
- (and as a consequence the bug) is the same.
- - The routine at 0x28b8 has been patched, so you can never see the "continue" feature.
- - The routine at 0x07d8 has been patched, so you can never get 255 credits.
- - The routine at 0x04c8 and the computed values from 0x6030 to 0x6032 are surprisingly
- the same as in 'exerion'.
- - The routine at 0x5bd0 has been patched, so the game can't reset.
- - The "protection" routine at 0x4120 has been patched, so the game can't reset.
- - The first unknown routine at 0x5f70 has been patched, so the game can't reset.
- - The second unknown routine at 0x414e has been patched, so lives can't be set to 0.
- - The routine at 0x5f90 is completely different : it reads values from AY port A,
- but nothing is written to addresses 0x6008-0x600c, and there are lots of writes
- to AY port B (0xd001) due to extra code at 0x0050 and extra data at 0x0040.
-
-***************************************************************************/
-
-#include "emu.h"
-#include "includes/exerion.h"
-
-#include "cpu/z80/z80.h"
-#include "machine/gen_latch.h"
-#include "sound/ay8910.h"
-#include "speaker.h"
-
-
-/*************************************
- *
- * Interrupts & inputs
- *
- *************************************/
-
-/* Players inputs are muxed at 0xa000 */
-CUSTOM_INPUT_MEMBER(exerion_state::exerion_controls_r)
-{
- static const char *const inname[2] = { "P1", "P2" };
- return ioport(inname[m_cocktail_flip])->read() & 0x3f;
-}
-
-
-INPUT_CHANGED_MEMBER(exerion_state::coin_inserted)
-{
- /* coin insertion causes an NMI */
- m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE);
-}
-
-
-
-/*************************************
- *
- * Protection??
- *
- *************************************/
-
-/* This is the first of many Exerion "features". No clue if it's */
-/* protection or some sort of timer. */
-READ8_MEMBER(exerion_state::exerion_porta_r)
-{
- m_porta ^= 0x40;
- return m_porta;
-}
-
-
-WRITE8_MEMBER(exerion_state::exerion_portb_w)
-{
- /* pull the expected value from the ROM */
- m_porta = memregion("maincpu")->base()[0x5f76];
- m_portb = data;
-
- logerror("Port B = %02X\n", data);
-}
-
-
-READ8_MEMBER(exerion_state::exerion_protection_r)
-{
- if (m_maincpu->pc() == 0x4143)
- return memregion("maincpu")->base()[0x33c0 + (m_main_ram[0xd] << 2) + offset];
- else
- return m_main_ram[0x8 + offset];
-}
-
-
-
-/*************************************
- *
- * Main CPU memory handlers
- *
- *************************************/
-
-void exerion_state::main_map(address_map &map)
-{
- map(0x0000, 0x5fff).rom();
- map(0x6000, 0x67ff).ram().share("main_ram");
- map(0x6008, 0x600b).r(FUNC(exerion_state::exerion_protection_r));
- map(0x8000, 0x87ff).ram().share("videoram");
- map(0x8800, 0x887f).ram().share("spriteram");
- map(0x8880, 0x8bff).ram();
- map(0xa000, 0xa000).portr("IN0");
- map(0xa800, 0xa800).portr("DSW0");
- map(0xb000, 0xb000).portr("DSW1");
- map(0xc000, 0xc000).w(FUNC(exerion_state::exerion_videoreg_w));
- map(0xc800, 0xc800).w("soundlatch", FUNC(generic_latch_8_device::write));
- map(0xd000, 0xd001).w("ay1", FUNC(ay8910_device::address_data_w));
- map(0xd800, 0xd801).w("ay2", FUNC(ay8910_device::address_data_w));
- map(0xd802, 0xd802).r("ay2", FUNC(ay8910_device::data_r));
-}
-
-
-
-/*************************************
- *
- * Sub CPU memory handlers
- *
- *************************************/
-
-void exerion_state::sub_map(address_map &map)
-{
- map(0x0000, 0x1fff).rom();
- map(0x4000, 0x47ff).ram();
- map(0x6000, 0x6000).r("soundlatch", FUNC(generic_latch_8_device::read));
- map(0x8000, 0x800c).w(FUNC(exerion_state::exerion_video_latch_w));
- map(0xa000, 0xa000).r(FUNC(exerion_state::exerion_video_timing_r));
-}
-
-
-
-/*************************************
- *
- * Port definitions
- *
- *************************************/
-
-/* verified from Z80 code */
-static INPUT_PORTS_START( exerion )
- PORT_START("IN0")
- PORT_BIT( 0x3f, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(exerion_state, exerion_controls_r)
- PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
-
- PORT_START("DSW0")
- PORT_DIPNAME( 0x07, 0x02, DEF_STR( Lives ) )
- PORT_DIPSETTING( 0x00, "1" )
- PORT_DIPSETTING( 0x01, "2" )
- PORT_DIPSETTING( 0x02, "3" )
- PORT_DIPSETTING( 0x03, "4" )
- PORT_DIPSETTING( 0x04, "5" )
-// PORT_DIPSETTING( 0x05, "5" ) /* duplicated setting */
-// PORT_DIPSETTING( 0x06, "5" ) /* duplicated setting */
- PORT_DIPSETTING( 0x07, "254 (Cheat)")
- PORT_DIPNAME( 0x18, 0x00, DEF_STR( Bonus_Life ) )
- PORT_DIPSETTING( 0x00, "10000" )
- PORT_DIPSETTING( 0x08, "20000" )
- PORT_DIPSETTING( 0x10, "30000" )
- PORT_DIPSETTING( 0x18, "40000" )
- PORT_DIPNAME( 0x60, 0x00, DEF_STR( Difficulty ) ) /* see notes */
- PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
- PORT_DIPSETTING( 0x20, DEF_STR( Medium ) )
- PORT_DIPSETTING( 0x40, DEF_STR( Hard ) )
- PORT_DIPSETTING( 0x60, DEF_STR( Hardest ) )
- PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) )
- PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
- PORT_DIPSETTING( 0x80, DEF_STR( Cocktail ) )
-
- PORT_START("DSW1")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen")
- PORT_DIPNAME( 0x0e, 0x00, DEF_STR( Coinage ) ) /* see notes */
- PORT_DIPSETTING( 0x0e, DEF_STR( 5C_1C ) )
- PORT_DIPSETTING( 0x0a, DEF_STR( 4C_1C ) )
- PORT_DIPSETTING( 0x06, DEF_STR( 3C_1C ) )
- PORT_DIPSETTING( 0x02, DEF_STR( 2C_1C ) )
- PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
- PORT_DIPSETTING( 0x04, DEF_STR( 1C_2C ) )
- PORT_DIPSETTING( 0x08, DEF_STR( 1C_3C ) )
- PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) )
- PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
-
- PORT_START("COIN")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED_MEMBER(DEVICE_SELF, exerion_state,coin_inserted, 0)
-
- PORT_START("P1") /* fake input port */
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
-
- PORT_START("P2") /* fake input port */
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
-INPUT_PORTS_END
-
-
-
-/*************************************
- *
- * Graphics layouts
- *
- *************************************/
-
-static const gfx_layout charlayout =
-{
- 8,8,
- RGN_FRAC(1,1),
- 2,
- { 0, 4 },
- { 3, 2, 1, 0, 8+3, 8+2, 8+1, 8+0 },
- { 16*0, 16*1, 16*2, 16*3, 16*4, 16*5, 16*6, 16*7 },
- 16*8
-};
-
-
-/* 16 x 16 sprites -- requires reorganizing characters in init_exerion() */
-static const gfx_layout spritelayout =
-{
- 16,16,
- RGN_FRAC(1,1),
- 2,
- { 0, 4 },
- { 3, 2, 1, 0, 8+3, 8+2, 8+1, 8+0,
- 16+3, 16+2, 16+1, 16+0, 24+3, 24+2, 24+1, 24+0 },
- { 32*0, 32*1, 32*2, 32*3, 32*4, 32*5, 32*6, 32*7,
- 32*8, 32*9, 32*10, 32*11, 32*12, 32*13, 32*14, 32*15 },
- 64*8
-};
-
-
-static GFXDECODE_START( gfx_exerion )
- GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 64 )
- GFXDECODE_ENTRY( "gfx2", 0, spritelayout, 256, 64 )
- GFXDECODE_SCALE( "gfx2", 0, spritelayout, 256, 64, 2, 2 )
-GFXDECODE_END
-
-
-/*************************************
- *
- * Machine drivers
- *
- *************************************/
-
-void exerion_state::machine_start()
-{
- save_item(NAME(m_porta));
- save_item(NAME(m_portb));
- save_item(NAME(m_cocktail_flip));
- save_item(NAME(m_char_palette));
- save_item(NAME(m_sprite_palette));
- save_item(NAME(m_char_bank));
- save_item(NAME(m_background_latches));
-}
-
-void exerion_state::machine_reset()
-{
- int i;
-
- m_porta = 0;
- m_portb = 0;
- m_cocktail_flip = 0;
- m_char_palette = 0;
- m_sprite_palette = 0;
- m_char_bank = 0;
-
- for (i = 0; i < 13; i++)
- m_background_latches[i] = 0;
-}
-
-void exerion_state::exerion(machine_config &config)
-{
- Z80(config, m_maincpu, EXERION_CPU_CLOCK);
- m_maincpu->set_addrmap(AS_PROGRAM, &exerion_state::main_map);
-
- z80_device &sub(Z80(config, "sub", EXERION_CPU_CLOCK));
- sub.set_addrmap(AS_PROGRAM, &exerion_state::sub_map);
-
-
- /* video hardware */
- SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
- m_screen->set_raw(EXERION_PIXEL_CLOCK, EXERION_HTOTAL, EXERION_HBEND, EXERION_HBSTART, EXERION_VTOTAL, EXERION_VBEND, EXERION_VBSTART);
- m_screen->set_screen_update(FUNC(exerion_state::screen_update_exerion));
- m_screen->set_palette(m_palette);
-
- GFXDECODE(config, m_gfxdecode, m_palette, gfx_exerion);
- PALETTE(config, m_palette, FUNC(exerion_state::exerion_palette), 256*3, 32);
-
- /* audio hardware */
- SPEAKER(config, "mono").front_center();
-
- GENERIC_LATCH_8(config, "soundlatch");
-
- AY8910(config, "ay1", EXERION_AY8910_CLOCK).add_route(ALL_OUTPUTS, "mono", 0.30);
-
- ay8910_device &ay2(AY8910(config, "ay2", EXERION_AY8910_CLOCK));
- ay2.port_a_read_callback().set(FUNC(exerion_state::exerion_porta_r));
- ay2.port_b_write_callback().set(FUNC(exerion_state::exerion_portb_w));
- ay2.add_route(ALL_OUTPUTS, "mono", 0.30);
-}
-
-void exerion_state::irion(machine_config &config)
-{
- exerion(config);
- config.device_remove("sub");
-}
-
-
-
-/*************************************
- *
- * ROM definitions
- *
- *************************************/
-
-ROM_START( exerion )
- ROM_REGION( 0x6000, "maincpu", 0 )
- ROM_LOAD( "exerion.07", 0x0000, 0x2000, CRC(4c78d57d) SHA1(ac702e9ad2bc05493fb1355858667c31c36acfe4) )
- ROM_LOAD( "exerion.08", 0x2000, 0x2000, CRC(dcadc1df) SHA1(91388f617cfaa4289ca1c84c697fcfdd8834ae15) )
- ROM_LOAD( "exerion.09", 0x4000, 0x2000, CRC(34cc4d14) SHA1(511c9de038f7bcaf6f7c96f2cbbe50a80673fa72) )
-
- ROM_REGION( 0x2000, "sub", 0 ) /* 64k for the second CPU */
- ROM_LOAD( "exerion.05", 0x0000, 0x2000, CRC(32f6bff5) SHA1(a4d0289f9d1d9eea7ca9a32a0616af48da74b401) )
-
- ROM_REGION( 0x02000, "gfx1", 0 )
- ROM_LOAD( "exerion.06", 0x00000, 0x2000, CRC(435a85a4) SHA1(f6846bfee11df754405d4d796e7d8ac0321b6eb6) ) /* fg chars */
-
- ROM_REGION( 0x04000, "gfx2", 0 )
- ROM_LOAD( "exerion.11", 0x00000, 0x2000, CRC(f0633a09) SHA1(8989bcb12abadde34777f7c189cfa6e2dfe92d62) ) /* sprites */
- ROM_LOAD( "exerion.10", 0x02000, 0x2000, CRC(80312de0) SHA1(4fa3bb9d5c62e41a54e8909f8d3b47637137e913) )
-
- ROM_REGION( 0x08000, "gfx3", 0 )
- ROM_LOAD( "exerion.03", 0x00000, 0x2000, CRC(790595b8) SHA1(8016ac2394b25db38e962bcff4805380082f6683) ) /* bg data */
- ROM_LOAD( "exerion.04", 0x02000, 0x2000, CRC(d7abd0b9) SHA1(ca6413ecd324cf84e11b703a4eda2c1e6d28ff15) )
- ROM_LOAD( "exerion.01", 0x04000, 0x2000, CRC(5bb755cb) SHA1(ec92c518c116a78dbb23381468cefb3f930212cc) )
- ROM_LOAD( "exerion.02", 0x06000, 0x2000, CRC(a7ecbb70) SHA1(3c359d5bb21290a45d3eb18fea2b1f9439b931be) )
-
- ROM_REGION( 0x0420, "proms", 0 )
- ROM_LOAD( "exerion.e1", 0x0000, 0x0020, CRC(2befcc20) SHA1(a24d3f691413378fde545a6ddcef7e5118e74019) ) /* palette */
- ROM_LOAD( "exerion.i8", 0x0020, 0x0100, CRC(31db0e08) SHA1(1041a778e86d3fe6f057cf40a0a08b30760f3887) ) /* fg char lookup table */
- ROM_LOAD( "exerion.h10", 0x0120, 0x0100, CRC(63b4c555) SHA1(30243041be4fa77ada71e8b29d721cad51640c29) ) /* sprite lookup table */
- ROM_LOAD( "exerion.i3", 0x0220, 0x0100, CRC(fe72ab79) SHA1(048a72e6db4768df687df927acaa70ef906b3dc0) ) /* bg char lookup table */
- ROM_LOAD( "exerion.k4", 0x0320, 0x0100, CRC(ffc2ba43) SHA1(03be1c41d6ac3fc11439caef04ef5ffa60d6aec4) ) /* bg char mixer */
-ROM_END
-
-
-ROM_START( exeriont )
- ROM_REGION( 0x6000, "maincpu", 0 )
- ROM_LOAD( "prom5.4p", 0x0000, 0x4000, CRC(58b4dc1b) SHA1(3e34d1eda0b0537dac1062e96259d4cc7c64049c) )
- ROM_LOAD( "prom6.4s", 0x4000, 0x2000, CRC(fca18c2d) SHA1(31077dada3ed4aa2e26af933f589e01e0c71e5cd) )
-
- ROM_REGION( 0x2000, "sub", 0 ) /* 64k for the second CPU */
- ROM_LOAD( "exerion.05", 0x0000, 0x2000, CRC(32f6bff5) SHA1(a4d0289f9d1d9eea7ca9a32a0616af48da74b401) )
-
- ROM_REGION( 0x02000, "gfx1", 0 )
- ROM_LOAD( "exerion.06", 0x00000, 0x2000, CRC(435a85a4) SHA1(f6846bfee11df754405d4d796e7d8ac0321b6eb6) ) /* fg chars */
-
- ROM_REGION( 0x04000, "gfx2", 0 )
- ROM_LOAD( "exerion.11", 0x00000, 0x2000, CRC(f0633a09) SHA1(8989bcb12abadde34777f7c189cfa6e2dfe92d62) ) /* sprites */
- ROM_LOAD( "exerion.10", 0x02000, 0x2000, CRC(80312de0) SHA1(4fa3bb9d5c62e41a54e8909f8d3b47637137e913) )
-
- ROM_REGION( 0x08000, "gfx3", 0 )
- ROM_LOAD( "exerion.03", 0x00000, 0x2000, CRC(790595b8) SHA1(8016ac2394b25db38e962bcff4805380082f6683) ) /* bg data */
- ROM_LOAD( "exerion.04", 0x02000, 0x2000, CRC(d7abd0b9) SHA1(ca6413ecd324cf84e11b703a4eda2c1e6d28ff15) )
- ROM_LOAD( "exerion.01", 0x04000, 0x2000, CRC(5bb755cb) SHA1(ec92c518c116a78dbb23381468cefb3f930212cc) )
- ROM_LOAD( "exerion.02", 0x06000, 0x2000, CRC(a7ecbb70) SHA1(3c359d5bb21290a45d3eb18fea2b1f9439b931be) )
-
- ROM_REGION( 0x0420, "proms", 0 )
- ROM_LOAD( "exerion.e1", 0x0000, 0x0020, CRC(2befcc20) SHA1(a24d3f691413378fde545a6ddcef7e5118e74019) ) /* palette */
- ROM_LOAD( "exerion.i8", 0x0020, 0x0100, CRC(31db0e08) SHA1(1041a778e86d3fe6f057cf40a0a08b30760f3887) ) /* fg char lookup table */
- ROM_LOAD( "exerion.h10", 0x0120, 0x0100, CRC(63b4c555) SHA1(30243041be4fa77ada71e8b29d721cad51640c29) ) /* sprite lookup table */
- ROM_LOAD( "exerion.i3", 0x0220, 0x0100, CRC(fe72ab79) SHA1(048a72e6db4768df687df927acaa70ef906b3dc0) ) /* bg char lookup table */
- ROM_LOAD( "exerion.k4", 0x0320, 0x0100, CRC(ffc2ba43) SHA1(03be1c41d6ac3fc11439caef04ef5ffa60d6aec4) ) /* bg char mixer */
-ROM_END
-
-
-ROM_START( exerionb )
- ROM_REGION( 0x6000, "maincpu", 0 )
- ROM_LOAD( "eb5.bin", 0x0000, 0x4000, CRC(da175855) SHA1(11ea46fd1d504e16e5ffc604d74c1ce210d6be1c) )
- ROM_LOAD( "eb6.bin", 0x4000, 0x2000, CRC(0dbe2eff) SHA1(5b0e5e8453619beec46c4350d1b2ed571fe3dc24) )
-
- ROM_REGION( 0x2000, "sub", 0 ) /* 64k for the second CPU */
- ROM_LOAD( "exerion.05", 0x0000, 0x2000, CRC(32f6bff5) SHA1(a4d0289f9d1d9eea7ca9a32a0616af48da74b401) )
-
- ROM_REGION( 0x02000, "gfx1", 0 )
- ROM_LOAD( "exerion.06", 0x00000, 0x2000, CRC(435a85a4) SHA1(f6846bfee11df754405d4d796e7d8ac0321b6eb6) ) /* fg chars */
-
- ROM_REGION( 0x04000, "gfx2", 0 )
- ROM_LOAD( "exerion.11", 0x00000, 0x2000, CRC(f0633a09) SHA1(8989bcb12abadde34777f7c189cfa6e2dfe92d62) ) /* sprites */
- ROM_LOAD( "exerion.10", 0x02000, 0x2000, CRC(80312de0) SHA1(4fa3bb9d5c62e41a54e8909f8d3b47637137e913) )
-
- ROM_REGION( 0x08000, "gfx3", 0 )
- ROM_LOAD( "exerion.03", 0x00000, 0x2000, CRC(790595b8) SHA1(8016ac2394b25db38e962bcff4805380082f6683) ) /* bg data */
- ROM_LOAD( "exerion.04", 0x02000, 0x2000, CRC(d7abd0b9) SHA1(ca6413ecd324cf84e11b703a4eda2c1e6d28ff15) )
- ROM_LOAD( "exerion.01", 0x04000, 0x2000, CRC(5bb755cb) SHA1(ec92c518c116a78dbb23381468cefb3f930212cc) )
- ROM_LOAD( "exerion.02", 0x06000, 0x2000, CRC(a7ecbb70) SHA1(3c359d5bb21290a45d3eb18fea2b1f9439b931be) )
-
- ROM_REGION( 0x0420, "proms", 0 )
- ROM_LOAD( "exerion.e1", 0x0000, 0x0020, CRC(2befcc20) SHA1(a24d3f691413378fde545a6ddcef7e5118e74019) ) /* palette */
- ROM_LOAD( "exerion.i8", 0x0020, 0x0100, CRC(31db0e08) SHA1(1041a778e86d3fe6f057cf40a0a08b30760f3887) ) /* fg char lookup table */
- ROM_LOAD( "exerion.h10", 0x0120, 0x0100, CRC(63b4c555) SHA1(30243041be4fa77ada71e8b29d721cad51640c29) ) /* sprite lookup table */
- ROM_LOAD( "exerion.i3", 0x0220, 0x0100, CRC(fe72ab79) SHA1(048a72e6db4768df687df927acaa70ef906b3dc0) ) /* bg char lookup table */
- ROM_LOAD( "exerion.k4", 0x0320, 0x0100, CRC(ffc2ba43) SHA1(03be1c41d6ac3fc11439caef04ef5ffa60d6aec4) ) /* bg char mixer */
-ROM_END
-
-ROM_START( irion )
- ROM_REGION( 0x6000, "maincpu", 0 )
- ROM_LOAD( "2.bin", 0x0000, 0x2000, CRC(bf55324e) SHA1(a310e953cc80d09111ba104f21461420ae3abcd5) )
- ROM_LOAD( "3.bin", 0x2000, 0x2000, CRC(0625bb49) SHA1(111edb1da2153c853d89e56a89ef813cee559730) )
- ROM_LOAD( "4.bin", 0x4000, 0x2000, CRC(918a9b1d) SHA1(e515f1b9c5ddda8115e68e8a499b252b09774bb6) )
-
- ROM_REGION( 0x02000, "gfx1", 0 )
- ROM_LOAD( "1.bin", 0x0000, 0x2000, CRC(56cd5ebf) SHA1(58d84c2dc3b3bac7371da5b9a230fa581ead31dc) )
-
- ROM_REGION( 0x04000, "gfx2", 0 )
- ROM_LOAD( "5.bin", 0x0000, 0x2000, CRC(80312de0) SHA1(4fa3bb9d5c62e41a54e8909f8d3b47637137e913) )
- ROM_LOAD( "6.bin", 0x2000, 0x2000, CRC(f0633a09) SHA1(8989bcb12abadde34777f7c189cfa6e2dfe92d62) )
-
- ROM_REGION( 0x08000, "gfx3", ROMREGION_ERASE00 )
-
- ROM_REGION( 0x0420, "proms", 0 ) // these are assumed to be on the board - the game won't run without them
- ROM_LOAD( "exerion.e1", 0x0000, 0x0020, CRC(2befcc20) SHA1(a24d3f691413378fde545a6ddcef7e5118e74019) ) /* palette */
- ROM_LOAD( "exerion.i8", 0x0020, 0x0100, CRC(31db0e08) SHA1(1041a778e86d3fe6f057cf40a0a08b30760f3887) ) /* fg char lookup table */
- ROM_LOAD( "exerion.h10", 0x0120, 0x0100, CRC(63b4c555) SHA1(30243041be4fa77ada71e8b29d721cad51640c29) ) /* sprite lookup table */
- ROM_LOAD( "exerion.i3", 0x0220, 0x0100, CRC(fe72ab79) SHA1(048a72e6db4768df687df927acaa70ef906b3dc0) ) /* bg char lookup table */
- ROM_LOAD( "exerion.k4", 0x0320, 0x0100, CRC(ffc2ba43) SHA1(03be1c41d6ac3fc11439caef04ef5ffa60d6aec4) ) /* bg char mixer */
-ROM_END
-
-
-/*************************************
- *
- * Driver initialization
- *
- *************************************/
-
-void exerion_state::init_exerion()
-{
- /* allocate some temporary space */
- std::vector<uint8_t> temp(0x10000);
-
- /* make a temporary copy of the character data */
- uint8_t *src = &temp[0];
- uint8_t *dst = memregion("gfx1")->base();
- uint32_t length = memregion("gfx1")->bytes();
- memcpy(src, dst, length);
-
- /* decode the characters */
- /* the bits in the ROM are ordered: n8-n7 n6 n5 n4-v2 v1 v0 n3-n2 n1 n0 h2 */
- /* we want them ordered like this: n8-n7 n6 n5 n4-n3 n2 n1 n0-v2 v1 v0 h2 */
- for (uint32_t oldaddr = 0; oldaddr < length; oldaddr++)
- {
- uint32_t newaddr = ((oldaddr ) & 0x1f00) | /* keep n8-n4 */
- ((oldaddr << 3) & 0x00f0) | /* move n3-n0 */
- ((oldaddr >> 4) & 0x000e) | /* move v2-v0 */
- ((oldaddr ) & 0x0001); /* keep h2 */
- dst[newaddr] = src[oldaddr];
- }
-
- /* make a temporary copy of the sprite data */
- src = &temp[0];
- dst = memregion("gfx2")->base();
- length = memregion("gfx2")->bytes();
- memcpy(src, dst, length);
-
- /* decode the sprites */
- /* the bits in the ROMs are ordered: n9 n8 n3 n7-n6 n5 n4 v3-v2 v1 v0 n2-n1 n0 h3 h2 */
- /* we want them ordered like this: n9 n8 n7 n6-n5 n4 n3 n2-n1 n0 v3 v2-v1 v0 h3 h2 */
- for (uint32_t oldaddr = 0; oldaddr < length; oldaddr++)
- {
- uint32_t newaddr = ((oldaddr << 1) & 0x3c00) | /* move n7-n4 */
- ((oldaddr >> 4) & 0x0200) | /* move n3 */
- ((oldaddr << 4) & 0x01c0) | /* move n2-n0 */
- ((oldaddr >> 3) & 0x003c) | /* move v3-v0 */
- ((oldaddr ) & 0xc003); /* keep n9-n8 h3-h2 */
- dst[newaddr] = src[oldaddr];
- }
-}
-
-
-void exerion_state::init_exerionb()
-{
- uint8_t *ram = memregion("maincpu")->base();
-
- /* the program ROMs have data lines D1 and D2 swapped. Decode them. */
- for (int addr = 0; addr < 0x6000; addr++)
- ram[addr] = (ram[addr] & 0xf9) | ((ram[addr] & 2) << 1) | ((ram[addr] & 4) >> 1);
-
- /* also convert the gfx as in Exerion */
- init_exerion();
-}
-
-void exerion_state::init_irion()
-{
- // convert the gfx and cpu roms like in ExerionB
- init_exerionb();
-
- // a further unscramble of gfx2
- uint8_t *ram = memregion("gfx2")->base();
- for (u16 i = 0; i < 0x4000; i += 0x400)
- {
- for (u16 j = 0; j < 0x200; j++)
- {
- u8 k = ram[i+j];
- ram[i+j] = ram[i+j+0x200];
- ram[i+j+0x200] = k;
- }
- }
-}
-
-
-
-/*************************************
- *
- * Game drivers
- *
- *************************************/
-
-GAME( 1983, exerion, 0, exerion, exerion, exerion_state, init_exerion, ROT90, "Jaleco", "Exerion", MACHINE_SUPPORTS_SAVE )
-GAME( 1983, exeriont, exerion, exerion, exerion, exerion_state, init_exerion, ROT90, "Jaleco (Taito America license)", "Exerion (Taito)", MACHINE_SUPPORTS_SAVE )
-GAME( 1983, exerionb, exerion, exerion, exerion, exerion_state, init_exerionb, ROT90, "bootleg", "Exerion (bootleg)", MACHINE_SUPPORTS_SAVE )
-GAME( 1983, irion, exerion, irion, exerion, exerion_state, init_irion, ROT90, "bootleg", "Irion", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )