Subversion Repositories open8_urisc

Last modification

• Rev 185 2020-03-13 19:13:36 GMT
• Author: jshamlet

• Log message:

  1) Fixed an apparently long-standing bug where the interrupt bit wasn't being cleared after an RTI
  2) Modified the program counter logic to be simpler. It now always increments, and states control the increment using the offset field. A new set of constants was added to replace the old states.
  3) Modified the ALU to always use Operand1 instead of ALU_Ctrl.Data (and removed the field in the record). A new ALU command, ALU_GMSK, was added, as it was the only instruction to set the .Data field to something other than Operand1 (Int_Mask)
  4) Modified the package file so that flag names match what the assembler calls them. FL_Z is now PSR_Z, FL_GP1 is now PSR_GP4, etc.
  5) Cleaned up the comments and code formatting