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legionna.cpp: fixed Godzilla OKI sound bankswitch [Angelo Salese]

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This commit is contained in:
angelosa 2018-04-15 21:07:34 +02:00
parent 0b66c6d21c
commit b38e0c1b7e
2 changed files with 19 additions and 0 deletions
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17
src/mame/drivers/legionna.cpp
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@ -274,6 +274,22 @@ void legionna_state::godzilla_map(address_map &map)
// Development leftover/coding bug? Game doesn't seem to care at all anyway.
}
// additional z80 i/o port, present only in Godzilla (512KB OKI ROM vs 256KB)
// Notice Denjin Makai has a 512KB OKI ROM too but latter half is empty
WRITE8_MEMBER(legionna_state::godzilla_oki_bank_w)
{
// bit 1 used, unknown purpose (always on?)
m_oki->set_rom_bank(data & 1);
if((data & 0xfe) != 0x02)
printf("oki_bank_w %02x!\n",data);
}
void legionna_state::godzilla_sound_io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).w(this, FUNC(legionna_state::godzilla_oki_bank_w));
}
// Denjin Makai: Looks like they specifically swapped address line A1 in this range?
// Initially thought it was a palette DMA mode 4 but it doesn't apply for Godzilla, causing color bugs in the background tilemap.
WRITE16_MEMBER(legionna_state::palette_swap_w)
@ -1321,6 +1337,7 @@ MACHINE_CONFIG_START(legionna_state::godzilla)
MCFG_CPU_ADD("audiocpu", Z80, 14318180/4)
MCFG_CPU_PROGRAM_MAP(seibu_sound_map)
MCFG_CPU_IO_MAP(godzilla_sound_io_map)
MCFG_DEVICE_ADD("raiden2cop", RAIDEN2COP, 0)
MCFG_RAIDEN2COP_VIDEORAM_OUT_CB(WRITE16(legionna_state, videowrite_cb_w))

2
src/mame/includes/legionna.h
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@ -63,6 +63,7 @@ public:
DECLARE_WRITE16_MEMBER(legionna_foreground_w);
DECLARE_WRITE16_MEMBER(legionna_text_w);
DECLARE_READ8_MEMBER(denjinmk_sound_comms_r);
DECLARE_WRITE8_MEMBER(godzilla_oki_bank_w);
DECLARE_WRITE16_MEMBER(denjinmk_setgfxbank);
DECLARE_WRITE16_MEMBER(heatbrl_setgfxbank);
DECLARE_WRITE16_MEMBER(grainbow_layer_config_w);
@ -117,4 +118,5 @@ public:
void heatbrl_map(address_map &map);
void legionna_cop_map(address_map &map);
void legionna_map(address_map &map);
void godzilla_sound_io_map(address_map &map);
};