Memory SRAM mirror tests write to OAM, causing subsequent runs to have failures on hardware.

[alyosha-tas]

DMA0 source/destination address of 0xF000 gets truncated down to 0x7000 so the SRAM mirror store tests write to OAM. This is fine on the first run as the store tests happen after the load test. However subsequent runs of the memory tests will show fails since the SRAM mirror load tests load from OAM, which is no longer 0 as expected as OAM is not cleared in between tests.

Confirmed this happens on hardware (Gameboy Player.)

[endrift]

Is this what's causing that error? I had trouble narrowing it down.

[alyosha-tas]

It seems mGBA does not write to OAM in this case, which is probably why it was hard to track down.

There seems to be a few other issues similar to this one, haven't figured out the details yet though.

(Great test suite by the way, it does a lot of cool stuff.)

[sczther]

Using a AGS-001 and Omega DE cart with test suite r88, in the memory tests, the SRAM load and SRAM mirror load DMA0 tests fail on a second run.

Running any of the video subtests (but no other) fixes the SRAM load tests, but not the SRAM mirror load. And only until your run the memory tests again.