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CDROM: Implement GetTN command

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This commit is contained in:
Connor McLaughlin
2019-10-18 22:44:28 +10:00
parent baf97cb864
commit 4959de9859
6 changed files with 36 additions and 1 deletions
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26
src/core/cdrom.cpp
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@ -407,6 +407,13 @@ void CDROM::PushStatResponse(Interrupt interrupt /*= Interrupt::ACK*/)
SetInterrupt(interrupt);
}
void CDROM::SendErrorResponse(u8 reason /*= 0x80*/)
{
m_response_fifo.Push(m_secondary_status.bits | 0x01);
m_response_fifo.Push(reason);
SetInterrupt(Interrupt::INT5);
}
void CDROM::UpdateStatusRegister()
{
m_status.ADPBUSY = false;
@ -755,6 +762,25 @@ void CDROM::ExecuteCommand()
}
break;
case Command::GetTN:
{
Log_DebugPrintf("CDROM GetTN command");
if (m_media)
{
m_response_fifo.Push(m_secondary_status.bits);
m_response_fifo.Push(DecimalToBCD(Truncate8(m_media->GetTrackNumber())));
m_response_fifo.Push(DecimalToBCD(Truncate8(m_media->GetTrackCount())));
SetInterrupt(Interrupt::ACK);
}
else
{
SendErrorResponse(0x80);
}
EndCommand();
}
break;
default:
Panic("Unknown command");
break;

1
src/core/cdrom.h
View File

@ -170,6 +170,7 @@ private:
bool HasPendingInterrupt() const { return m_interrupt_flag_register != 0; }
void SetInterrupt(Interrupt interrupt);
void PushStatResponse(Interrupt interrupt = Interrupt::ACK);
void SendErrorResponse(u8 reason = 0x80);
void UpdateStatusRegister();
u32 GetAckDelayForCommand() const;