openpower/isatables.mdwn

   1 # ISA Reference Tables
   2
   3 These are from 3.0B p1145 Appendix C, and are
   4 based on Anton Blanchard's microwatt decode1.vhdl
   5
   6 # Major opcodes
   7
   8 decodes using f_in.insn(31 downto 26)
   9
  10 [[!table format=csv file="openpower/isatables/major.csv"]]
  11
  12 # Minor opcode 19
  13
  14 decodes using f_in.insn(5 downto 1)
  15
  16 [[!table format=csv file="openpower/isatables/minor_19_00000.csv"]]
  17
  18 decodes using f_in.insn(10 downto 1)
  19
  20 [[!table format=csv file="openpower/isatables/minor_19.csv"]]
  21
  22 # Minor opcode 30
  23
  24 decodes using f_in.insn(4 downto 1)
  25
  26 [[!table format=csv file="openpower/isatables/minor_30.csv"]]
  27
  28 # Minor opcode 31
  29
  30 decodes using f_in.insn(10 downto 1)
  31
  32 [[!table format=csv file="openpower/isatables/minor_31.csv"]]
  33
  34 # Minor opcode 58
  35
  36 decodes using f_in.insn(1 downto 0)
  37
  38 [[!table format=csv file="openpower/isatables/minor_58.csv"]]
  39
  40 # Minor opcode 62
  41
  42 decodes using f_in.insn(1 downto 0)
  43
  44 [[!table format=csv file="openpower/isatables/minor_62.csv"]]
  45
  46 # Extra opcodes
  47
  48 These can match against the (full) row[0] spec: nmigen Case supports "-" as
  49 "don't care"
  50
  51 [[!table format=csv file="openpower/isatables/extra.csv"]]
  52
  53 # SPRs
  54
  55 Special Purpose Registers.  These are listed in 3.0B Table 18 p971.
  56
  57 [[!table format=csv file="openpower/isatables/sprs.csv"]]
  58
  59 # Fields
  60
  61 These can be downloaded in plain text format here:
  62 <http://libre-riscv.org/openpower/isatables/fields.text>