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MSM6295: add clock rate flag

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This commit is contained in:
tildearrow 2022-05-23 03:13:22 -05:00
parent 59a722d04a
commit d3edc58cb1
4 changed files with 48 additions and 7 deletions
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11
src/engine/platform/sound/oki/msm6295.cpp
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@ -53,6 +53,11 @@
#include "msm6295.hpp"
#define CORE_DIVIDER 3
#define CHANNEL_DELAY (15/CORE_DIVIDER)
#define MASTER_DELAY (33/CORE_DIVIDER)
void msm6295_core::tick()
{
// command handler
@ -60,7 +65,7 @@ void msm6295_core::tick()
{
if (bitfield(m_command, 7)) // play voice
{
if ((++m_clock) >= ((15 * (m_ss ? 5 : 4))))
if ((++m_clock) >= ((CHANNEL_DELAY * (m_ss ? 5 : 4))))
{
m_clock = 0;
if (bitfield(m_next_command, 4, 4) != 0)
@ -84,7 +89,7 @@ void msm6295_core::tick()
}
else if (bitfield(m_next_command, 7)) // select phrase
{
if ((++m_clock) >= ((15 * (m_ss ? 5 : 4))))
if ((++m_clock) >= ((CHANNEL_DELAY * (m_ss ? 5 : 4))))
{
m_clock = 0;
m_command = m_next_command;
@ -154,7 +159,7 @@ void msm6295_core::voice_t::tick()
else
{
// playback
if ((++m_clock) >= ((33 * (m_host.m_ss ? 5 : 4))))
if ((++m_clock) >= ((MASTER_DELAY * (m_host.m_ss ? 5 : 4))))
{
m_clock = 0;
bool is_end = (m_command != 0);