Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 17:00:53 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

prevent 500gp locking up

Browse Source
This commit is contained in:
Michaël Banaan Ananas 2012-11-02 11:44:12 +00:00
parent 55c067d07e
commit ce4c2fb950
1 changed files with 13 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/mame/drivers/namcos23.c
View File

@ -1292,6 +1292,7 @@ struct c412_t
UINT16 sram[0x20000]; // Ram-based tiles for rendering
UINT16 pczram[0x200]; // Ram-based tilemap for rendering, or something else
UINT32 adr;
UINT16 status_c;
};
struct c421_t
@ -1671,6 +1672,11 @@ READ16_MEMBER(namcos23_state::s23_c412_r)
return m_c412.adr >> 16;
case 0xa:
return s23_c412_ram_r(space, m_c412.adr, mem_mask);
case 0xc:
// unknown status, 500gp reads it and waits for a transition
// no other games use it?
m_c412.status_c ^= 1;
return m_c412.status_c;
}
logerror("c412_r %x @ %04x (%08x, %08x)\n", offset, mem_mask, space.device().safe_pc(), (unsigned int)space.device().state().state_int(MIPS3_R31));
@ -1681,13 +1687,17 @@ WRITE16_MEMBER(namcos23_state::s23_c412_w)
{
switch (offset)
{
case 8:
case 0x2:
// d0: cz on
// other bits: no function?
break;
case 0x8:
m_c412.adr = (data & mem_mask) | (m_c412.adr & (0xffffffff ^ mem_mask));
break;
case 9:
case 0x9:
m_c412.adr = ((data & mem_mask) << 16) | (m_c412.adr & (0xffffffff ^ (mem_mask << 16)));
break;
case 10:
case 0xa:
s23_c412_ram_w(space, m_c412.adr, data, mem_mask);
m_c412.adr += 2;
break;