From: lkcl <lkcl@web>
Date: Tue, 5 Jan 2021 23:32:56 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~612
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=447fd474dec0c70db56fed6bde6698eedc3f604a;p=libreriscv.git

---

diff --git a/openpower/sv/byteswap.mdwn b/openpower/sv/byteswap.mdwn
index d867f5588..3c4dfefe1 100644
--- a/openpower/sv/byteswap.mdwn
+++ b/openpower/sv/byteswap.mdwn
@@ -2,8 +2,12 @@
 
 ## Byte-swapping Mux
 
+gate count for 4:1 MUX is estimated at 40 gates.  8x 40 gates for a total of 320 gates to provide aligned byteswapping 64 bit.
+
 <img alt="Byte-swap mux diagram" src="../byteswap_mux.svg" width="100%"/>
 
 ## Byte-swapping Pipe
 
-<img alt="Byte-swap pipe diagram" src="../byteswap_pipe.svg" width="100%"/>
\ No newline at end of file
+per source and dest operand, 320 gates required.  if two source operands (ALU pipeline, Logical pipeline) this totals 960 gates (per Function Unit).  3 operands (madd) is 1280 gates.
+
+<img alt="Byte-swap pipe diagram" src="../byteswap_pipe.svg" width="100%"/>