From 7da7a32cae68928d66c22722a45fa74b3a562bcd Mon Sep 17 00:00:00 2001
From: mgcaret <mgcaret@users.noreply.github.com>
Date: Sun, 19 Mar 2017 16:19:37 -0700
Subject: [PATCH] add note about speed table testing

---
 rom5x/spdtab.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rom5x/spdtab.h b/rom5x/spdtab.h
index c2292c9..5755275 100644
--- a/rom5x/spdtab.h
+++ b/rom5x/spdtab.h
@@ -1,4 +1,8 @@
 ; speed table for 4 MHz IIc Plus
+; this was confirmed by measuring a delay loop
+; for each speed.  The delay loop was timed
+; timed to 1/100 sec accuracy using the Ram
+; Express II+ dclock.
         .byte %00000000,$00 ; 4.0000
         .byte %00100011,$33 ; 3.3333
         .byte %00010011,$20 ; 3.2000