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Gundam Wing: Endless Duel updates: [Peter Ferrie]

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* added additional shared memory block
 * added protection handlers
 * corrected reset vector
 * worked around bad startup

Game now boots but doesn't coin up.
This commit is contained in:
R. Belmont 2014-09-26 02:26:12 +00:00
parent de4a491aab
commit 74c5b5fa9b
1 changed files with 66 additions and 0 deletions
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66
src/mame/drivers/snesb.c
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@ -155,11 +155,17 @@ public:
INT8 *m_shared_ram;
UINT8 m_cnt;
INT8 *m_shared_ram2;
DECLARE_READ8_MEMBER(sharedram_r);
DECLARE_WRITE8_MEMBER(sharedram_w);
DECLARE_READ8_MEMBER(sb2b_75bd37_r);
DECLARE_READ8_MEMBER(sb2b_6a6xxx_r);
DECLARE_READ8_MEMBER(sb2b_7xxx_r);
DECLARE_READ8_MEMBER(endless_580xxx_r);
DECLARE_READ8_MEMBER(endless_624b7f_r);
DECLARE_READ8_MEMBER(endless_800b_r);
DECLARE_READ8_MEMBER(sharedram2_r);
DECLARE_WRITE8_MEMBER(sharedram2_w);
DECLARE_READ8_MEMBER(snesb_dsw1_r);
DECLARE_READ8_MEMBER(snesb_dsw2_r);
DECLARE_READ8_MEMBER(snesb_coin_r);
@ -217,6 +223,50 @@ READ8_MEMBER(snesb_state::sb2b_7xxx_r)
}
/* Endless Duel */
READ8_MEMBER(snesb_state::endless_580xxx_r)
{
/* protection checks */
switch(offset)
{
case 0x2bc: return 0xb4;
case 0x36a: return 0x8a;
case 0x7c1: return 0xd9;
case 0x956: return 0xa5;
case 0xe83: return 0x6b;
}
logerror("Unknown protection read read %x @ %x\n",offset, space.device().safe_pc());
return 0;
}
READ8_MEMBER(snesb_state::endless_624b7f_r)
{
/* protection check */
return ++m_cnt;
}
READ8_MEMBER(snesb_state::endless_800b_r)
{
if (!offset)
{
return 0x50;
}
return 0xe8;
}
READ8_MEMBER(snesb_state::sharedram2_r)
{
return m_shared_ram2[offset];
}
WRITE8_MEMBER(snesb_state::sharedram2_w)
{
m_shared_ram2[offset]=data;
}
/* Generic read handlers for Dip Switches and coins inputs */
READ8_MEMBER(snesb_state::snesb_dsw1_r)
{
@ -892,6 +942,22 @@ DRIVER_INIT_MEMBER(snesb_state,endless)
}
}
/* boot vector */
dst[0x7ffc] = 0x00;
dst[0x7ffd] = 0x80;
/* protection checks */
m_maincpu->space(AS_PROGRAM).install_read_handler(0x580000, 0x580fff, read8_delegate(FUNC(snesb_state::endless_580xxx_r),this));
m_maincpu->space(AS_PROGRAM).install_read_handler(0x624b7f, 0x624b7f, read8_delegate(FUNC(snesb_state::endless_624b7f_r),this));
/* work around missing content */
m_maincpu->space(AS_PROGRAM).install_read_handler(0x800b, 0x800c, read8_delegate(FUNC(snesb_state::endless_800b_r),this));
m_shared_ram = auto_alloc_array(machine(), INT8, 0x22);
m_shared_ram2 = auto_alloc_array(machine(), INT8, 0x22);
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x781000, 0x781021, read8_delegate(FUNC(snesb_state::sharedram_r),this), write8_delegate(FUNC(snesb_state::sharedram_w),this));
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x781200, 0x781221, read8_delegate(FUNC(snesb_state::sharedram2_r),this), write8_delegate(FUNC(snesb_state::sharedram2_w),this));
DRIVER_INIT_CALL(snes);
}