From 80c6c88873d1297ad47b77179c4001d0896c9836 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Tue, 23 Jan 2018 11:50:14 -0800
Subject: Use y instead of a in PMP addresses

So they don't get confused for hexadecimal numbers.
---
 src/machine.tex | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'src/machine.tex')

diff --git a/src/machine.tex b/src/machine.tex
index d281b3b..c3f5bc4 100644
--- a/src/machine.tex
+++ b/src/machine.tex
@@ -2762,13 +2762,13 @@ to encode the size of the range, as shown in Table~\ref{pmpcfg-napot}.
   \hline
   \tt pmpaddr    & {\tt pmpcfg}.A & Match type and size \\
   \hline
-  \tt aaaa...aaaa & NA4   & 4-byte NAPOT range \\
-  \tt aaaa...aaa0 & NAPOT & 8-byte NAPOT range \\
-  \tt aaaa...aa01 & NAPOT & 16-byte NAPOT range \\
-  \tt aaaa...a011 & NAPOT & 32-byte NAPOT range \\
+  \tt yyyy...yyyy & NA4   & 4-byte NAPOT range \\
+  \tt yyyy...yyy0 & NAPOT & 8-byte NAPOT range \\
+  \tt yyyy...yy01 & NAPOT & 16-byte NAPOT range \\
+  \tt yyyy...y011 & NAPOT & 32-byte NAPOT range \\
   \multicolumn{1}{|c|}{\ldots} &  \ldots  & \multicolumn{1}{|c|}{\ldots} \\
-  \tt aa01...1111 & NAPOT & $2^{XLEN}$-byte NAPOT range \\
-  \tt a011...1111 & NAPOT & $2^{XLEN+1}$-byte NAPOT range \\
+  \tt yy01...1111 & NAPOT & $2^{XLEN}$-byte NAPOT range \\
+  \tt y011...1111 & NAPOT & $2^{XLEN+1}$-byte NAPOT range \\
   \tt 0111...1111 & NAPOT & $2^{XLEN+2}$-byte NAPOT range \\
   \tt 1111...1111 & NAPOT & {\em Reserved} \\
   \hline
@@ -2781,9 +2781,9 @@ to encode the size of the range, as shown in Table~\ref{pmpcfg-napot}.
 If TOR is selected, the associated address register forms the top of the
 address range, and the preceding PMP address register forms the bottom of the
 address range.  If PMP entry $i$'s A field is set to TOR, the entry matches
-any address $a$ such that ${\tt pmpaddr}_{i-1}\leq a < {\tt pmpaddr}_i$.  If
+any address $y$ such that ${\tt pmpaddr}_{i-1}\leq y < {\tt pmpaddr}_i$.  If
 PMP entry 0's A field is set to TOR, zero is used for the lower bound, and so
-it matches any address $a < {\tt pmpaddr}_0$.
+it matches any address $y < {\tt pmpaddr}_0$.
 
 \subsubsection*{Locking and Privilege Mode}
 
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