anchor.diff:  wr_regfld regmodel.TxStatus.TxEn 0
   rd_regfld regmodel.TxStatus.TxEn
   
  -# load command file
  -history save demo1
  -read demo1
  +#rewind
   
   # continue to demo sequence commands
   continue
  
positive.code: 
  # send a sequence item
  seq_item_create vip_tr tr
  seq_item_rand tr
  seq_item_set_fields tr chr='hff
  seqr_execute_item env.vip.sqr tr
  
  
negative.code: # house keeping functions
  help
  run 10ns
  run 20ns
  pause
  call debug_prompt
  history
  repeat 1
  history clear
  history
  
  # register access
  rd_addr 0
  rd_addr 4 
  
  # load command file
  history save demo1
  read demo1
  
  wr_addr 4 1
  rd_addr 4 
  rd_reg regmodel.IntMask 
  wr_reg regmodel.IntMask 0
  rd_reg regmodel.IntMask 
  