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| -rw-r--r-- | src/zfinx.tex | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/zfinx.tex b/src/zfinx.tex index 6e61c59..6e12de2 100644 --- a/src/zfinx.tex +++ b/src/zfinx.tex @@ -16,12 +16,11 @@ minimal implementation cost. By eliminating the {\tt f} registers, the Zfinx extension substantially reduces the cost of simple RISC-V implementations with floating-point instruction-set support. -Zfinx also reduces context-switch effort. +Zfinx also reduces context-switch cost. -Unlike most RISC-V extensions, the addition of Zfinx is not backwards -compatible: software that uses floating-point instructions but assumes the -absence of the Zfinx extension will not, in general, execute correctly on -implementations with the Zfinx extension. +In general, software that assumes the presence of the F extension +is incompatible with software that assumes the presence of the Zfinx +extension, and vice versa. \end{commentary} The Zfinx extension adds all of the instructions that the F extension |