From f629b350fa6529c9661c6c43d7e7ea835aea6c19 Mon Sep 17 00:00:00 2001
From: Peter Evans <pevans@activecampaign.com>
Date: Thu, 14 Dec 2017 22:46:50 -0600
Subject: [PATCH] We can't have a negative track pos; zero is the lowest

---
 src/apple2.dd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/apple2.dd.c b/src/apple2.dd.c
index c79861e..40c6195 100644
--- a/src/apple2.dd.c
+++ b/src/apple2.dd.c
@@ -66,8 +66,8 @@ apple2dd_step(apple2dd *drive, int steps)
 
     if (drive->track_pos > MAX_DRIVE_STEPS) {
         drive->track_pos = MAX_DRIVE_STEPS;
-    } else if (drive->track_pos < -MAX_DRIVE_STEPS) {
-        drive->track_pos = -MAX_DRIVE_STEPS;
+    } else if (drive->track_pos < 0) {
+        drive->track_pos = 0;
     }
 }