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ttchamp - working nvram (nw)

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This commit is contained in:
mamehaze 2015-03-27 13:08:22 +00:00
parent 05516f50c9
commit 2efa1d7544
1 changed files with 10 additions and 8 deletions
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18
src/mame/drivers/ttchamp.c
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@ -58,7 +58,7 @@ Dumped by tirino73
Notes
I think the PIC is used to interface with battry backed RAM instead of an EEPROM,
we currently attempt to simulate this as the PIC is read protected.
we currently simulate this as the PIC is read protected.
@ -264,9 +264,10 @@ READ16_MEMBER(ttchamp_state::ttchamp_pic_r)
// printf("%06x: read from PIC (%04x)\n", space.device().safe_pc(),mem_mask);
if (picmodex == PIC_SET_READLATCH)
{
printf("read data %02x from %02x\n", m_pic_latched, m_pic_readaddr);
// printf("read data %02x from %02x\n", m_pic_latched, m_pic_readaddr);
picmodex = PIC_IDLE;
return m_pic_latched;
return m_pic_latched << 8;
}
return 0x00;
@ -297,11 +298,14 @@ WRITE16_MEMBER(ttchamp_state::ttchamp_pic_w)
{
picmodex = PIC_IDLE;
m_bakram[m_pic_writeaddr] = m_pic_writelatched;
printf("wrote %02x to %02x\n", m_pic_writelatched, m_pic_writeaddr);
// printf("wrote %02x to %02x\n", m_pic_writelatched, m_pic_writeaddr);
}
else if (data == 0x22) // next data to latch
{
m_pic_latched = m_bakram[m_pic_readaddr];
// why does it read twice as many addresses, forcing us to shift the
// address by 1 to give correct results? maybe it can read 'previous' data' too?
m_pic_latched = m_bakram[m_pic_readaddr>>1];
// printf("latch read data %02x from %02x\n",m_pic_latched, m_pic_readaddr );
picmodex = PIC_SET_READLATCH; // waiting to read...
}
@ -672,10 +676,8 @@ ROM_END
DRIVER_INIT_MEMBER(ttchamp_state,ttchamp)
{
// UINT8 *ROM1 = memregion("user1")->base();
// membank("bank1")->set_base(&ROM1[0x100000]);
// membank("bank2")->set_base(&ROM1[0x180000]);
}
// only the graphics differ between the two sets, code section is the same
GAME( 1995, ttchamp, 0, ttchamp, ttchamp, ttchamp_state, ttchamp, ROT0, "Gamart", "Table Tennis Champions", 0 ) // this has various advertising boards, including 'Electronic Devices' and 'Deniam'
GAME( 1995, ttchampa,ttchamp, ttchamp, ttchamp, ttchamp_state, ttchamp, ROT0, "Gamart (Palencia Elektronik license)", "Table Tennis Champions (Palencia Elektronik license)", 0 ) // this only has Palencia Elektronik advertising boards