===== 07 GST GPU GPUSTAT | BIOS 19951204 System ROM Version 3.0 11/18/96 A

gpu/gpustat
Bits in GPUSTAT description:
Bit 25 - DMA Request 
  - When DMA Direction == 0 (Off) - always 0
  - When DMA Direction == 1 (FIFO) - ?
  - When DMA Direction == 2 (CPUtoGP0) - same as Bit 28
  - When DMA Direction == 3 (GPUREADtoCPU) - same as Bit 27
Bit 26 - Ready to receive Cmd Word
Bit 27 - Ready to send VRAM to CPU
Bit 28 - Ready to receive DMA Block
Bits 29-30 - DMA Direction (0 - Off, 1 - FIFO, 2 - CPUtoGP0, 3 - GPUREADtoCPU)

pass - testGpustat_CPU_beforeRender
pass - testGpustat_CPU_duringRender
pass - testGpustat_CPU_afterRender
pass - testGpustat_linkedListDMA_beforeRender
pass - testGpustat_LinkedListDMA_duringRender
pass - testGpustat_LinkedListDMA_afterRender
pass - testGpustat_SyncModeDMA_dir1_beforeRender
pass - testGpustat_SyncModeDMA_dir1_duringRender
pass - testGpustat_SyncModeDMA_dir1_afterRender
pass - testGpustat_SyncModeDMA_dir2_beforeRender
fail - testGpustat_SyncModeDMA_dir2_duringRender:254 `(stat) & (1 << 25) == 0 << 25`, given: 0x2000000, expected: 0x0 
fail - testGpustat_SyncModeDMA_dir2_duringRender:257 `(stat) & (1 << 28) == 0 << 28`, given: 0x10000000, expected: 0x0 
pass - testGpustat_SyncModeDMA_dir2_afterRender
Done.