DISABLE_BLOCK_WRITE_2D
WriteCrtcReg(0x88, DISABLE_BLOCK_WRITE_2D, DISABLE_BLOCK_WRITE_2D);
regRec.CR88 = ReadCrtcReg(0x88) | DISABLE_BLOCK_WRITE_2D;
WriteCrtcReg(0x88, DISABLE_BLOCK_WRITE_2D, DISABLE_BLOCK_WRITE_2D);