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CDROM: Reset read sector buffer on INT1

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Fixes GetlocL -> DMA out returning incorrect data.

Fixes FoxKids.com - Micro Maniacs Racing.
This commit is contained in:
Connor McLaughlin 2020-05-16 00:33:01 +10:00
parent e1157bff65
commit 110aa8bd93
1 changed files with 4 additions and 1 deletions
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5
src/core/cdrom.cpp
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@ -473,6 +473,9 @@ void CDROM::DeliverAsyncInterrupt()
Assert(m_pending_async_interrupt != 0 && !HasPendingInterrupt()); Assert(m_pending_async_interrupt != 0 && !HasPendingInterrupt());
Log_DebugPrintf("Delivering async interrupt %u", m_pending_async_interrupt); Log_DebugPrintf("Delivering async interrupt %u", m_pending_async_interrupt);
if (m_pending_async_interrupt == static_cast<u8>(Interrupt::DataReady))
m_current_read_sector_buffer = m_current_write_sector_buffer;
m_response_fifo.Clear(); m_response_fifo.Clear();
m_response_fifo.PushFromQueue(&m_async_response_fifo); m_response_fifo.PushFromQueue(&m_async_response_fifo);
m_interrupt_flag_register = m_pending_async_interrupt; m_interrupt_flag_register = m_pending_async_interrupt;
@ -1582,8 +1585,8 @@ void CDROM::ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ&
} }
// TODO: How does XA relate to this buffering? // TODO: How does XA relate to this buffering?
SectorBuffer* sb = &m_sector_buffers[m_current_write_sector_buffer];
m_current_write_sector_buffer = (m_current_write_sector_buffer + 1) % NUM_SECTOR_BUFFERS; m_current_write_sector_buffer = (m_current_write_sector_buffer + 1) % NUM_SECTOR_BUFFERS;
SectorBuffer* sb = &m_sector_buffers[m_current_write_sector_buffer];
if (sb->size > 0) if (sb->size > 0)
{ {
Log_DevPrintf("Sector buffer %u was not read, previous sector dropped", Log_DevPrintf("Sector buffer %u was not read, previous sector dropped",