Subversion Repositories open8_urisc

Last modification

• Rev 252 2020-06-09 23:39:06 GMT
• Author: jshamlet

• Log message:

  (This time the CPU model was included...)
  Added the ability to use unsigned offsets to the LDO/STO instructions. The original behavior of signed offsets is preserved if the Unsigned_Index_Offsets is left unset or set to FALSE. While inserting this code, pipeline registers were also inserted into the address generation logic for indexed instructions. This simplifies the final multiplexor and improves FMax at the slight expense of LDO/SDO now taking one additional clock cycle to execute.