From: lkcl Date: Mon, 3 Apr 2023 12:41:32 +0000 (+0100) Subject: (no commit message) X-Git-Tag: opf_rfc_ls012_v1~157 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b3c66f97d0ceb85f2ffac3ddd6abb16fdd32d241;p=libreriscv.git --- diff --git a/openpower/sv/svp64.mdwn b/openpower/sv/svp64.mdwn index 6486b075d..22daccc61 100644 --- a/openpower/sv/svp64.mdwn +++ b/openpower/sv/svp64.mdwn @@ -44,8 +44,10 @@ Table of contents Simple-V is a type of Vectorisation best described as a "Prefix Loop Subsystem" similar to the 5 decades-old Zilog Z80 `LDIR` instruction and to the 8086 `REP` Prefix instruction. More advanced features are similar -to the Z80 `CPIR` instruction. If viewed one-dimensionally as an actual -Vector ISA it introduces over 1.5 million 64-bit Vector instructions. +to the Z80 `CPIR` instruction. If naively viewed one-dimensionally as an actual +Vector ISA it introduces over 1.5 million 64-bit True-Scalable Vector instructions +on the SFFS Subset and closer to 10 million 64-bit True-Scalable Vector +instructions if introduced on VSX. SVP64, the instruction format used by Simple-V, is therefore best viewed as an orthogonal RISC-paradigm "Prefixing" subsystem instead.