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Ported OG's fix in m68k based games. Seibu Cup Soccer players now turns around right, at the expense of being mostly without the head (!). SD Gundam has less erratic Homing Missiles and third mid-boss doesn't go to wonderland anymore.

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This commit is contained in:
Angelo Salese 2014-08-29 19:57:02 +00:00
parent bd0c451680
commit dba1a3fdf1
1 changed files with 61 additions and 39 deletions
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100
src/mame/machine/seicop.c
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@ -2279,8 +2279,8 @@ WRITE16_MEMBER( seibu_cop_legacy_device::generic_cop_w )
break;
/* triggered before 0x6200 in Seibu Cup, looks like an angle value ... */
case (0x01c/2): m_cop_angle_compare = INT8(m_cop_mcu_ram[0x1c/2]); break;
case (0x01e/2): m_cop_angle_mod_val = INT8(m_cop_mcu_ram[0x1e/2]); break;
case (0x01c/2): m_cop_angle_compare = UINT16(m_cop_mcu_ram[0x1c/2]); break;
case (0x01e/2): m_cop_angle_mod_val = UINT16(m_cop_mcu_ram[0x1e/2]); break;
/* BCD Protection */
case (0x020/2):
@ -2810,8 +2810,9 @@ WRITE16_MEMBER( seibu_cop_legacy_device::generic_cop_w )
//(cupsoc) | 8 | f3e7 | 6200 | 3a0 3a6 380 aa0 2a6
if(COP_CMD(0x3a0,0x3a6,0x380,0xaa0,0x2a6,0x000,0x000,0x000,8,0xf3e7))
{
INT8 cur_angle;
UINT8 cur_angle;
UINT16 flags;
/* 0 [1] */
/* 0xc [1] */
/* 0 [0] */
@ -2819,27 +2820,40 @@ WRITE16_MEMBER( seibu_cop_legacy_device::generic_cop_w )
/* 0xc [1] */
cur_angle = space.read_byte(m_cop_register[1] + (0xc ^ 3));
flags = space.read_word(m_cop_register[1]);
//space.write_byte(m_cop_register[1] + (0^3),space.read_byte(m_cop_register[1] + (0^3)) & 0xfb); //correct?
if(cur_angle >= m_cop_angle_compare)
m_cop_angle_compare &= 0xff;
m_cop_angle_mod_val &= 0xff;
flags &= 0x04;
int delta = cur_angle - m_cop_angle_compare;
if(delta >= 128)
delta -= 256;
else if(delta < -128)
delta += 256;
if(delta < 0)
{
cur_angle -= m_cop_angle_mod_val;
if(cur_angle <= m_cop_angle_compare)
if(delta >= -m_cop_angle_mod_val)
{
cur_angle = m_cop_angle_compare;
//space.write_byte(m_cop_register[1] + (0^3),space.read_byte(m_cop_register[1] + (0^3)) | 2);
}
}
else if(cur_angle <= m_cop_angle_compare)
flags |= 0x0004;
}
else
cur_angle += m_cop_angle_mod_val;
}
else
{
cur_angle += m_cop_angle_mod_val;
if(cur_angle >= m_cop_angle_compare)
if(delta <= m_cop_angle_mod_val)
{
cur_angle = m_cop_angle_compare;
//space.write_byte(m_cop_register[1] + (0^3),space.read_byte(m_cop_register[1] + (0^3)) | 2);
}
flags |= 0x0004;
}
else
cur_angle -= m_cop_angle_mod_val;
}
space.write_byte(m_cop_register[1] + (0 ^ 2),flags);
space.write_byte(m_cop_register[1] + (0xc ^ 3),cur_angle);
return;
}
@ -2849,37 +2863,45 @@ WRITE16_MEMBER( seibu_cop_legacy_device::generic_cop_w )
/* FIXME: still doesn't work ... */
if(COP_CMD(0x380,0x39a,0x380,0xa80,0x29a,0x000,0x000,0x000,8,0xf3e7))
{
INT8 cur_angle;
UINT8 cur_angle;
UINT16 flags;
cur_angle = space.read_byte(m_cop_register[0] + (0x34 ^ 3));
flags = space.read_word(m_cop_register[0] + (0 ^ 2));
//space.write_byte(m_cop_register[1] + (0^3),space.read_byte(m_cop_register[1] + (0^3)) & 0xfb); //correct?
cur_angle = INT8(space.read_byte(m_cop_register[0] + (0x34 ^ 3)));
//space.write_byte(m_cop_register[0] + (0^3),space.read_byte(m_cop_register[0] + (0^3)) & 0xfb); //correct?
/*
0x00 0x00 0x60 0x00
0x00 0x20 0x60 0x20
0x00 0x40 0x60 0x60
0x00 0x60 0x60 0x60
0x00 0x80 0x60 0xa0
0x00 0xa0 0x60 0xa0
0x00 0xc0 0x60 0xc0
0x00 0xe0 0x60 0xe0
*/
if(cur_angle > m_cop_angle_compare)
m_cop_angle_compare &= 0xff;
m_cop_angle_mod_val &= 0xff;
flags &= 0x04;
int delta = cur_angle - m_cop_angle_compare;
if(delta >= 128)
delta -= 256;
else if(delta < -128)
delta += 256;
if(delta < 0)
{
cur_angle -= m_cop_angle_mod_val;
if(cur_angle < m_cop_angle_compare)
if(delta >= -m_cop_angle_mod_val)
{
cur_angle = m_cop_angle_compare;
}
else if(cur_angle < m_cop_angle_compare)
flags |= 0x0004;
}
else
cur_angle += m_cop_angle_mod_val;
}
else
{
cur_angle += m_cop_angle_mod_val;
if(cur_angle > m_cop_angle_compare)
if(delta <= m_cop_angle_mod_val)
{
cur_angle = m_cop_angle_compare;
flags |= 0x0004;
}
else
cur_angle -= m_cop_angle_mod_val;
}
space.write_byte(m_cop_register[0] + (0x34 ^ 3),cur_angle);
space.write_byte(m_cop_register[0] + (0 ^ 3),flags);
space.write_word(m_cop_register[0] + (0x34 ^ 3),cur_angle);
return;
}