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CDROM: Implement stop command

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This commit is contained in:
Connor McLaughlin 2019-10-28 17:19:29 +10:00
parent 6e60991fd0
commit c15822d745
2 changed files with 36 additions and 3 deletions
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35
src/core/cdrom.cpp
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@ -524,6 +524,10 @@ void CDROM::Execute(TickCount ticks)
DoPauseComplete();
break;
case DriveState::Stopping:
DoStopComplete();
break;
case DriveState::ReadingID:
DoIDRead();
break;
@ -727,6 +731,20 @@ void CDROM::ExecuteCommand()
return;
}
case Command::Stop:
{
const bool was_motor_on = m_secondary_status.motor_on;
Log_DebugPrintf("CDROM stop command");
SendACKAndStat();
m_drive_state = DriveState::Stopping;
m_drive_remaining_ticks = was_motor_on ? (m_mode.double_speed ? 25000000 : 13000000) : 7000;
m_system->SetDowncount(m_drive_remaining_ticks);
EndCommand();
return;
}
case Command::Init:
{
Log_DebugPrintf("CDROM init command");
@ -981,6 +999,19 @@ void CDROM::DoPauseComplete()
SetAsyncInterrupt(Interrupt::INT2);
}
void CDROM::DoStopComplete()
{
Log_DebugPrintf("Stop complete");
m_drive_state = DriveState::Idle;
m_secondary_status.ClearActiveBits();
m_secondary_status.motor_on = false;
m_sector_buffer.clear();
m_async_response_fifo.Clear();
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::INT2);
}
void CDROM::DoIDRead()
{
// TODO: This should depend on the disc type/region...
@ -1294,8 +1325,8 @@ void CDROM::DrawDebugWindow()
if (ImGui::CollapsingHeader("Status/Mode", ImGuiTreeNodeFlags_DefaultOpen))
{
static constexpr std::array<const char*, 7> drive_state_names = {
{"Idle", "Initializing", "Seeking", "Reading ID", "Reading", "Playing", "Pausing"}};
static constexpr std::array<const char*, 8> drive_state_names = {
{"Idle", "Initializing", "Seeking", "Reading ID", "Reading", "Playing", "Pausing", "Stopping"}};
ImGui::Columns(3);

4
src/core/cdrom.h
View file

@ -114,7 +114,8 @@ private:
ReadingID,
Reading,
Playing,
Pausing
Pausing,
Stopping,
};
union StatusRegister
@ -197,6 +198,7 @@ private:
void DoInitComplete();
void DoSeekComplete();
void DoPauseComplete();
void DoStopComplete();
void DoIDRead();
void DoSectorRead();
void ProcessDataSector(const u8* raw_sector);