3 * q: Why bother with GPU stuff in a plugin-based emu core?
4 * a: mostly because of busy bits, we have all the needed timing info
5 * that GPU plugin doesn't.
8 #define PSXGPU_LCF (1<<31)
9 #define PSXGPU_nBUSY (1<<26)
10 #define PSXGPU_ILACE (1<<22)
11 #define PSXGPU_DHEIGHT (1<<19)
13 // both must be set for interlace to work
14 #define PSXGPU_ILACE_BITS (PSXGPU_ILACE | PSXGPU_DHEIGHT)
16 #define HW_GPU_STATUS psxHu32ref(0x1814)
18 // TODO: handle com too
19 #define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY)
21 #define gpuSyncPluginSR() { \
22 HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \
23 HW_GPU_STATUS |= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \