# ISA Reference Tables
-TODO
-
-Based on Anton Blanchard's microwatt decode1.vhdl
+These are from 3.0B p1145 Appendix C, and are
+based on Anton Blanchard's microwatt decode1.vhdl
# Major opcodes
# SPRs
-Special Purpose Registers
+Special Purpose Registers. These are listed in 3.0B Table 18 p971.
[[!table format=csv file="openpower/isatables/sprs.csv"]]