libpcsxcore/gpu.h

   1
   2 /*
   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.
   6  */
   7
   8 #define PSXGPU_LCF   (1<<31)
   9 #define PSXGPU_nBUSY (1<<26)
  10 #define PSXGPU_ILACE (1<<22)
  11
  12 #define HW_GPU_STATUS psxHu32ref(0x1814)
  13
  14 // TODO: handle com too
  15 #define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY)
  16
  17 #define gpuSyncPluginSR() { \
  18         HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \
  19         HW_GPU_STATUS |= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \
  20 }