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| author | Andrew Waterman <andrew@sifive.com> | 2022-01-25 15:13:51 -0800 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2022-01-25 15:13:51 -0800 |
| commit | c1c77c4902d5e7c58613d725d09d66a2a743da1c (patch) | |
| tree | 6ecdeda7a42f6c6bc5e203fca7ce6dcf93aaf475 /src/machine.tex | |
| parent | 9181ac0b74a6e41b911893f563510626aba0e1d4 (diff) | |
| download | riscv-isa-manual-c1c77c4902d5e7c58613d725d09d66a2a743da1c.zip riscv-isa-manual-c1c77c4902d5e7c58613d725d09d66a2a743da1c.tar.gz riscv-isa-manual-c1c77c4902d5e7c58613d725d09d66a2a743da1c.tar.bz2 | |
Remove tentative purpose for reserved misa.B and misa.J bits
This change has no normative effect.
What were formerly informally referred to as the B and J extensions
are instead going to become multiple smaller and disjoint extensions.
Since it appears unlikely that B and J will ultimately have any
meaning, simply mark these misa bits as "reserved", rather than
"tentatively reserved for X".
Diffstat (limited to 'src/machine.tex')
| -rw-r--r-- | src/machine.tex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/machine.tex b/src/machine.tex index c7f6fd0..1b26271 100644 --- a/src/machine.tex +++ b/src/machine.tex @@ -116,7 +116,7 @@ The ``X'' bit will be set if there are any non-standard extensions. Bit & Character & Description \\ \hline 0 & A & Atomic extension \\ - 1 & B & {\em Tentatively reserved for Bit-Manipulation extension} \\ + 1 & B & {\em Reserved} \\ 2 & C & Compressed extension \\ 3 & D & Double-precision floating-point extension \\ 4 & E & RV32E base ISA \\ @@ -124,7 +124,7 @@ Bit & Character & Description \\ 6 & G & {\em Reserved} \\ 7 & H & Hypervisor extension \\ 8 & I & RV32I/64I/128I base ISA \\ - 9 & J & {\em Tentatively reserved for Dynamically Translated Languages extension} \\ + 9 & J & {\em Reserved} \\ 10 & K & {\em Reserved} \\ 11 & L & {\em Reserved} \\ 12 & M & Integer Multiply/Divide extension \\ |