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DMA: Add additional tick penalty to DMA chains for page change

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This commit is contained in:
Connor McLaughlin 2020-11-15 21:50:59 +10:00
parent 6a2deb6d71
commit df12f08ac3
1 changed files with 2 additions and 1 deletions
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3
src/core/dma.cpp
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@ -294,7 +294,7 @@ bool DMA::TransferChannel(Channel channel)
{ {
u32 header; u32 header;
std::memcpy(&header, &ram_pointer[current_address & ADDRESS_MASK], sizeof(header)); std::memcpy(&header, &ram_pointer[current_address & ADDRESS_MASK], sizeof(header));
used_ticks++; used_ticks += 10;
const u32 word_count = header >> 24; const u32 word_count = header >> 24;
const u32 next_address = header & UINT32_C(0x00FFFFFF); const u32 next_address = header & UINT32_C(0x00FFFFFF);
@ -302,6 +302,7 @@ bool DMA::TransferChannel(Channel channel)
word_count * UINT32_C(4), word_count, next_address); word_count * UINT32_C(4), word_count, next_address);
if (word_count > 0) if (word_count > 0)
{ {
used_ticks += 5;
used_ticks += used_ticks +=
TransferMemoryToDevice(channel, (current_address + sizeof(header)) & ADDRESS_MASK, 4, word_count); TransferMemoryToDevice(channel, (current_address + sizeof(header)) & ADDRESS_MASK, 4, word_count);
} }