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Diffstat (limited to 'src/mame/drivers/forte2.cpp')
-rw-r--r-- | src/mame/drivers/forte2.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/mame/drivers/forte2.cpp b/src/mame/drivers/forte2.cpp new file mode 100644 index 00000000000..303d9ddae23 --- /dev/null +++ b/src/mame/drivers/forte2.cpp @@ -0,0 +1,156 @@ +// license:BSD-3-Clause +// copyright-holders:hap, Mariusz Wojcieszek +/* Brazilian bootleg board from 1989. Forte II Games, Industria Brasileira. +MAME driver by Mariusz Wojcieszek & hap, based on information from Alexandre. + +Hardware is based on MSX1, excluding i8255 PPI: + 64KB RAM, largely unused + 64KB EPROM (2764-15, contains hacked BIOS and game ROM) + Z80 @ 3.58MHz + GI AY-3-8910 + TI TMS9928A + (no dipswitches) + +Games: +Pesadelo (means Nightmare in Portuguese), 1989 bootleg of Knightmare (Majou +Densetsu in Japan) (C) 1986 Konami, originally released exclusively on MSX. +This arcade conversion has been made a bit harder, eg. bonus power-ups deplete +three times quicker, and the game starts at a later, more difficult level. +A rough translation of the text after inserting a coin: Coins won't accumulate, +insert a new coin after the game is over if you want another play. + +According to Alexandre, there are more games for this board, but not +found/dumped yet. */ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "video/tms9928a.h" +#include "sound/ay8910.h" + + +class forte2_state : public driver_device +{ +public: + forte2_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu") { } + + UINT8 m_input_mask; + DECLARE_READ8_MEMBER(forte2_ay8910_read_input); + DECLARE_WRITE8_MEMBER(forte2_ay8910_set_input_mask); + DECLARE_WRITE_LINE_MEMBER(vdp_interrupt); + DECLARE_DRIVER_INIT(pesadelo); + virtual void machine_start(); + virtual void machine_reset(); + required_device<cpu_device> m_maincpu; +}; + + + +static ADDRESS_MAP_START( program_mem, AS_PROGRAM, 8, forte2_state ) + AM_RANGE(0x0000, 0xbfff) AM_ROM + AM_RANGE(0xc000, 0xffff) AM_RAM +ADDRESS_MAP_END + +static ADDRESS_MAP_START( io_mem, AS_IO, 8, forte2_state ) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x98, 0x98) AM_DEVREADWRITE( "tms9928a", tms9928a_device, vram_read, vram_write ) + AM_RANGE(0x99, 0x99) AM_DEVREADWRITE( "tms9928a", tms9928a_device, register_read, register_write ) + AM_RANGE(0xa0, 0xa1) AM_DEVWRITE("aysnd", ay8910_device, address_data_w) + AM_RANGE(0xa2, 0xa2) AM_DEVREAD("aysnd", ay8910_device, data_r) +// AM_RANGE(0xa8, 0xa8) AM_RAM // Ports a8-ab are originally for communicating with the i8255 PPI on MSX. +// AM_RANGE(0xa9, 0xab) AM_NOP // Since this arcade board doesn't have one, those ports should be unmapped. +ADDRESS_MAP_END + +static INPUT_PORTS_START( pesadelo ) + PORT_START("IN0") + PORT_BIT (0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) + PORT_BIT (0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) + PORT_BIT (0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) + PORT_BIT (0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) + PORT_BIT (0x10, IP_ACTIVE_LOW, IPT_BUTTON1) + PORT_BIT (0x20, IP_ACTIVE_LOW, IPT_START1) + PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_COIN1) +INPUT_PORTS_END + + +READ8_MEMBER(forte2_state::forte2_ay8910_read_input) +{ + return ioport("IN0")->read() | (m_input_mask&0x3f); +} + +WRITE8_MEMBER(forte2_state::forte2_ay8910_set_input_mask) +{ + /* PSG reg 15, writes 0 at coin insert, 0xff at boot and game over */ + m_input_mask = data; +} + +WRITE_LINE_MEMBER(forte2_state::vdp_interrupt) +{ + m_maincpu->set_input_line(0, (state ? HOLD_LINE : CLEAR_LINE)); +} + +void forte2_state::machine_reset() +{ + m_input_mask = 0xff; +} + +void forte2_state::machine_start() +{ + /* register for save states */ + save_item(NAME(m_input_mask)); +} + + +static MACHINE_CONFIG_START( pesadelo, forte2_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, XTAL_3_579545MHz) + MCFG_CPU_PROGRAM_MAP(program_mem) + MCFG_CPU_IO_MAP(io_mem) + + /* video hardware */ + MCFG_DEVICE_ADD( "tms9928a", TMS9928A, XTAL_10_738635MHz / 2 ) + MCFG_TMS9928A_VRAM_SIZE(0x4000) + MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(forte2_state, vdp_interrupt)) + MCFG_TMS9928A_SCREEN_ADD_NTSC( "screen" ) + MCFG_SCREEN_UPDATE_DEVICE( "tms9928a", tms9928a_device, screen_update ) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("aysnd", AY8910, (float)XTAL_3_579545MHz/2) + MCFG_AY8910_PORT_A_READ_CB(READ8(forte2_state, forte2_ay8910_read_input)) + MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(forte2_state, forte2_ay8910_set_input_mask)) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) +MACHINE_CONFIG_END + +DRIVER_INIT_MEMBER(forte2_state,pesadelo) +{ + int i; + UINT8 *mem = memregion("maincpu")->base(); + int memsize = memregion("maincpu")->bytes(); + + // data swap + for ( i = 0; i < memsize; i++ ) + { + mem[i] = BITSWAP8(mem[i],3,5,6,7,0,4,2,1); + } + + // address line swap + dynamic_buffer buf(memsize); + memcpy(&buf[0], mem, memsize); + for ( i = 0; i < memsize; i++ ) + { + mem[BITSWAP16(i,11,9,8,13,14,15,12,7,6,5,4,3,2,1,0,10)] = buf[i]; + } + +} + +ROM_START( pesadelo ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "epr2764.15", 0x00000, 0x10000, CRC(1ae2f724) SHA1(12880dd7ad82acf04861843fb9d4f0f926d18f6b) ) +ROM_END + +GAME( 1989, pesadelo, 0, pesadelo, pesadelo, forte2_state, pesadelo, ROT0, "bootleg (Forte II Games) / Konami", "Pesadelo (bootleg of Knightmare on MSX)", MACHINE_SUPPORTS_SAVE ) |