# ISA Reference Tables

These are from 3.0B p1145 Appendix C, and are
based on Anton Blanchard's microwatt decode1.vhdl

# Major opcodes

decodes using f_in.insn(31 downto 26)

[[!table format=csv file="openpower/isatables/major.csv"]]

# Minor opcode 19

decodes using f_in.insn(5 downto 1)

[[!table format=csv file="openpower/isatables/minor_19_00000.csv"]]

decodes using f_in.insn(10 downto 1)

[[!table format=csv file="openpower/isatables/minor_19.csv"]]

# Minor opcode 30

decodes using f_in.insn(4 downto 1)

[[!table format=csv file="openpower/isatables/minor_30.csv"]]

# Minor opcode 31

decodes using f_in.insn(10 downto 1)

[[!table format=csv file="openpower/isatables/minor_31.csv"]]

# Minor opcode 58

decodes using f_in.insn(1 downto 0)

[[!table format=csv file="openpower/isatables/minor_58.csv"]]

# Minor opcode 62

decodes using f_in.insn(1 downto 0)

[[!table format=csv file="openpower/isatables/minor_62.csv"]]

# Extra opcodes

These can match against the (full) row[0] spec: nmigen Case supports "-" as
"don't care"

[[!table format=csv file="openpower/isatables/extra.csv"]]

# SPRs

Special Purpose Registers.  These are listed in 3.0B Table 18 p971.

[[!table format=csv file="openpower/isatables/sprs.csv"]]

# Fields

These are in machine-readable format that may be parsed with the
following program:
[power_fields.py](https://git.libre-soc.org/?p=openpower-isa.git;a=blob;f=src/openpower/decoder/power_fields.py;hb=HEAD)

The table can be downloaded in plain text format here:
[[openpower/isatables/fields.text]]

```
[[!inline pages="openpower/isatables/fields.text" raw="yes" ]]
```