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By request, nw

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This commit is contained in:
angelosa 2015-12-17 23:42:25 +01:00
parent 0ea73cb407
commit c23f8cdf1b
1 changed files with 12 additions and 4 deletions
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16
src/mame/drivers/konamigx.cpp
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@ -597,7 +597,10 @@ TIMER_CALLBACK_MEMBER(konamigx_state::dmaend_callback)
void konamigx_state::dmastart_callback(int data)
{
int sprite_timing;
// raise the DMA busy flag
// TODO: is it supposed to raise even if DMA is disabled?
m_gx_rdport1_3 |= 2;
// begin transfer if DMAEN(bit4 of OBJSET1) is set (see p.48)
@ -608,7 +611,12 @@ void konamigx_state::dmastart_callback(int data)
}
// simulate DMA delay
m_dmadelay_timer->adjust(attotime::from_usec(m_gx_wrport2 & 1 ? (256+32) : (342+42)));
// TODO: Rushing Heroes doesn't like reported sprite timings, probably due of sprite protection being issued istantly or requires the double buffering ...
if(m_gx_rushingheroes_hack == 1)
sprite_timing = 64;
else
sprite_timing = m_gx_wrport2 & 1 ? (256+32) : (342+42);
m_dmadelay_timer->adjust(attotime::from_usec(sprite_timing));
}
@ -874,10 +882,10 @@ WRITE32_MEMBER(konamigx_state::type4_prot_w)
known commands:
rng2 rushhero vsnet winspike what
------------------------------------------------------------------------------
0a56 0d96 0d14 0d1c memcpy from c01000 to c01400 for 0x400 bytes
0a56 0d96 0d14 0d1c memcpy from c01000 to c01400 for 0x400 bytes
0b16 generate sprite list at c01000 or c08400 (not sure entirely, see routine at 209922 in rungun2)
0d97 0515 parse big DMA list at c10200
57a copy 4 bytes from c00f10 to c10f00 and 4 bytes from c00f30 to c0fe00
0d97 0515 parse big DMA list at c10200
057a copy 4 bytes from c00f10 to c10f00 and 4 bytes from c00f30 to c0fe00
*/
if ((m_last_prot_op == 0xa56) || (m_last_prot_op == 0xd96) || (m_last_prot_op == 0xd14) || (m_last_prot_op == 0xd1c))
{