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new working clone

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----
Thunder Force AC (Japan, prototype, bootleg) [Marcio Miranda]

thread is here https://shmups.system11.org/viewtopic.php?f=1&t=66235 apparently bootleg repros of this have been for sale since 2015 at least
This commit is contained in:
DavidHaywood 2020-03-18 19:28:08 +00:00
parent 031d501cc9
commit 93a3473cc7
4 changed files with 44 additions and 11 deletions
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45
src/mame/drivers/segac2.cpp
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@ -110,12 +110,15 @@ public:
, m_upd7759(*this, "upd")
, m_screen(*this, "screen")
, m_palette(*this, "palette")
, m_io(*this, "io")
{
}
void segac2(machine_config &config);
void segac(machine_config &config);
void segac2_tfrceacjpb(machine_config &config);
void init_c2boot();
void init_bloxeedc();
void init_columns();
@ -198,6 +201,7 @@ private:
optional_device<upd7759_device> m_upd7759;
optional_device<screen_device> m_screen;
required_device<palette_device> m_palette;
required_device<sega_315_5296_device> m_io;
int prot_func_dummy(int in);
int prot_func_columns(int in);
@ -1597,15 +1601,15 @@ void segac2_state::segac(machine_config &config)
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_1); // borencha requires 0xff fill or there is no sound (it lacks some of the init code of the borench set)
sega_315_5296_device &io(SEGA_315_5296(config, "io", XL2_CLOCK/6)); // clock divider guessed
io.in_pa_callback().set_ioport("P1");
io.in_pb_callback().set_ioport("P2");
io.in_pc_callback().set(FUNC(segac2_state::io_portc_r));
io.out_pd_callback().set(FUNC(segac2_state::io_portd_w));
io.in_pe_callback().set_ioport("SERVICE");
io.in_pf_callback().set_ioport("COINAGE");
io.in_pg_callback().set_ioport("DSW");
io.out_ph_callback().set(FUNC(segac2_state::io_porth_w));
SEGA_315_5296(config, m_io, XL2_CLOCK/6); // clock divider guessed
m_io->in_pa_callback().set_ioport("P1");
m_io->in_pb_callback().set_ioport("P2");
m_io->in_pc_callback().set(FUNC(segac2_state::io_portc_r));
m_io->out_pd_callback().set(FUNC(segac2_state::io_portd_w));
m_io->in_pe_callback().set_ioport("SERVICE");
m_io->in_pf_callback().set_ioport("COINAGE");
m_io->in_pg_callback().set_ioport("DSW");
m_io->out_ph_callback().set(FUNC(segac2_state::io_porth_w));
/* video hardware */
SEGA315_5313(config, m_vdp, XL2_CLOCK, m_maincpu);
@ -1653,6 +1657,12 @@ void segac2_state::segac2(machine_config &config)
UPD7759(config, m_upd7759, XL1_CLOCK).add_route(ALL_OUTPUTS, "mono", 0.50);
}
void segac2_state::segac2_tfrceacjpb(machine_config& config)
{
segac2(config);
m_io->set_ignore_read_direction();
}
/******************************************************************************
@ -1809,6 +1819,22 @@ ROM_START( tfrceacj ) /* Thunder Force AC (Japan) (c)1990 Technosoft / Sega - 8
ROM_LOAD( "epr-13655.ic4", 0x000000, 0x040000, CRC(e09961f6) SHA1(e109b5f41502b765d191f22e3bbcff97d6defaa1) )
ROM_END
/* This set has significantly different code addresses to both the Genesis Thunder Force III and the arcade Thunder Force AC, and seems to sit somewhere between them
Some sources indicate it's a hack, but it might be a hack of an otherwise unsupported set, with the protection removed, for bootleggers to sell at a profit.
This specific dump was sourced from a PCB sold in Canada */
ROM_START( tfrceacjpb ) // protection chip simply marked T-FORCE (not used outside of startup init?)
ROM_REGION( 0x200000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD16_BYTE( "ic32_t.f.ac_075f.ic32", 0x000000, 0x040000, CRC(2167dd93) SHA1(0e5b8eb87e07e6e5cecf096e6b62e15ff7406bba) )
ROM_LOAD16_BYTE( "ic31_t.f.ac_0d26.id31", 0x000001, 0x040000, CRC(ebf02bba) SHA1(effdc60837063ba04b7b4517e57a240b29a199e1) )
/* 0x080000 - 0x100000 Empty */
ROM_LOAD16_BYTE( "ic34_t.f.ac_549d.ic34", 0x100000, 0x040000, CRC(902ad2ec) SHA1(58db20ca5888110e97f80e7df9dac1b8e9817562) )
ROM_LOAD16_BYTE( "ic33_t.f.ac_d131.ic33", 0x100001, 0x040000, CRC(b162219d) SHA1(ad022307019b4a70cb532e1101cb5ed8d31f10e2) )
ROM_REGION( 0x040000, "upd", ROMREGION_ERASE00 )
// empty socket (not used)
ROM_END
ROM_START( tfrceacb ) /* Thunder Force AC (Bootleg) (c)1990 Technosoft / Sega */
ROM_REGION( 0x200000, "maincpu", 0 )
@ -2623,6 +2649,7 @@ GAME( 1990, column2j, columns2, segac, columns2, segac2_state, init_
GAME( 1990, tfrceac, 0, segac2, tfrceac, segac2_state, init_tfrceac, ROT0, "Technosoft / Sega", "Thunder Force AC", 0 )
GAME( 1990, tfrceacj, tfrceac, segac2, tfrceac, segac2_state, init_tfrceac, ROT0, "Technosoft / Sega", "Thunder Force AC (Japan)", 0 )
GAME( 1990, tfrceacb, tfrceac, segac2, tfrceac, segac2_state, init_tfrceacb, ROT0, "bootleg", "Thunder Force AC (bootleg)", 0 )
GAME( 1990, tfrceacjpb,tfrceac, segac2_tfrceacjpb, tfrceac, segac2_state, init_tfrceac, ROT0, "Technosoft / Sega", "Thunder Force AC (Japan, prototype, bootleg)", 0 )
GAME( 1990, borench, 0, segac2, borench, segac2_state, init_borench, ROT0, "Sega", "Borench (set 1)", 0 )
GAME( 1990, borencha, borench, segac2, borench, segac2_state, init_borench, ROT0, "Sega", "Borench (set 2)", 0 )

5
src/mame/machine/315_5296.cpp
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@ -36,7 +36,8 @@ sega_315_5296_device::sega_315_5296_device(const machine_config &mconfig, const
device_t(mconfig, SEGA_315_5296, tag, owner, clock),
m_in_port_cb(*this),
m_out_port_cb(*this),
m_out_cnt_cb(*this)
m_out_cnt_cb(*this),
m_ignore_read_direction(false)
{
}
@ -88,7 +89,7 @@ READ8_MEMBER( sega_315_5296_device::read )
// port A to H
case 0x0: case 0x1: case 0x2: case 0x3: case 0x4: case 0x5: case 0x6: case 0x7:
// if the port is configured as an output, return the last thing written
if (m_dir & 1 << offset)
if ((m_dir & 1 << offset) && (m_ignore_read_direction == false))
return m_output_latch[offset];
// otherwise, return an input port

4
src/mame/machine/315_5296.h
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@ -47,6 +47,8 @@ public:
auto out_cnt1_callback() { return m_out_cnt_cb[1].bind(); }
auto out_cnt2_callback() { return m_out_cnt_cb[2].bind(); }
void set_ignore_read_direction() { m_ignore_read_direction = true; }
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
@ -65,6 +67,8 @@ private:
uint8_t m_output_latch[8];
uint8_t m_cnt;
uint8_t m_dir;
bool m_ignore_read_direction;
};
// device type definition

1
src/mame/mame.lst
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@ -35523,6 +35523,7 @@ tantrkor // (c) 1992 Sega
tfrceac // (c) 1990 Sega / Technosoft
tfrceacb // bootleg
tfrceacj // (c) 1990 Sega / Technosoft
tfrceacjpb // prototype / bootleg
twinsqua // (c) 1991 Sega
wwmarine // (c) 1992 Sega
zunkyou // (c) 1994 Sega