From 46d859f68c33a804854534b5af0a2be8c3d0a7fc Mon Sep 17 00:00:00 2001
From: David Banks <dave@hoglet.com>
Date: Sun, 17 May 2020 09:55:56 +0100
Subject: [PATCH] Firware: Fix a race condition when single stepping at slow
 (<= 1MHz) clock rates

Change-Id: Iee127a2765559d46f25c7fa1b2ad50cccba6cb9d
---
 firmware/AtomBusMon.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/firmware/AtomBusMon.c b/firmware/AtomBusMon.c
index fdf1370..35a2cc2 100644
--- a/firmware/AtomBusMon.c
+++ b/firmware/AtomBusMon.c
@@ -1053,6 +1053,9 @@ uint8_t logDetails() {
 }
 
 void logAddr() {
+  // Delay works around a race condition with slow CPUs
+  // (really the STEP and RESET commands should be synchronous)
+  Delay_us(100);
   memAddr = hwRead16(OFFSET_IAL);
   // Update the serial console
   logCycleCount(OFFSET_CNTL, OFFSET_CNTH);