Merge branch 'master' of https://github.com/Elphel/x393

//`define MEMBRIDGE_DEBUG_READ 1

  `define use200Mhz 1

  `define USE_CMD_ENCOD_TILED_32_RD 1  

  // It can be used to check different `ifdef branches

  //`define XIL_TIMING //Simprim 

  `define den4096Mb 1

//  `define IVERILOG

  // defines for memory channels

  // chn 0 is read from memory and write to memory

 `define def_enable_mem_chn0

 `define def_read_mem_chn0