X port
[Register File]

X port connectivity

This is a read and write port.
The contents of the X register is permanently available for reading, under the name `pavr_rf_x'.
The X write port consists of a data in (pavr_rf_x_di) and a write strobe (pavr_rf_x_wr).

Requests to X write port

• pavr_s5_ldstincrampx_xwr_rq
  Increment X.
  If the controller has more than 64KB memory, than increment RAMPX:X (24 bits) rather than X (16 bits).
  Needed by loads and stores with postincrement.
  
• pavr_s5_ldstdecrampx_xwr_rq
  Decrement X.
  If more than 64KB memory, than decrement RAMPX:X rather than X.
  Needed by loads and stores with predecrement.
  
  

---