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Another attempt at improving accuracy of sound emulation in inder.cpp (nw)

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This commit is contained in:
AJR 2016-12-17 17:12:31 -05:00
parent 29c687f9fb
commit 6d822e20a6
1 changed files with 6 additions and 4 deletions
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10
src/mame/drivers/inder.cpp
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@ -1242,17 +1242,19 @@ WRITE8_MEMBER( inder_state::sndbank_w )
void inder_state::update_mus() void inder_state::update_mus()
{ {
if ((m_sound_addr < 0x40000) && (m_sndbank != 0xff)) if ((m_sound_addr < 0x40000) && (m_sndbank != 0xff))
m_13->ab_w(m_p_speech[m_sound_addr]); m_13->ba_w(m_p_speech[m_sound_addr]);
else else
m_13->ab_w(0); m_13->ba_w(0);
} }
WRITE_LINE_MEMBER( inder_state::vck_w ) WRITE_LINE_MEMBER( inder_state::vck_w )
{ {
m_9a->clock_w(0); // The order of these writes is sensitive, though the schematic (not to scale)
// makes it seem that both 74HCT74 clock inputs should be raised simultaneously
m_9b->clock_w(0); m_9b->clock_w(0);
m_9a->clock_w(1); m_9a->clock_w(0);
m_9b->clock_w(1); m_9b->clock_w(1);
m_9a->clock_w(1);
} }
WRITE_LINE_MEMBER( inder_state::qc7a_w ) WRITE_LINE_MEMBER( inder_state::qc7a_w )