More sensible check

1 files changed, 4 insertions, 4 deletions

diff --git a/tr8as.c b/tr8as.c
index aa5439d..6206132 100644
--- a/tr8as.c
+++ b/tr8as.c
@@ -318,13 +318,13 @@ done:
 
 static uint8_t parse_register(char *word)
 {
-    if (!strcasecmp(word, "a"))
+    if ((*word == 'a' || *word == 'A') && word[1] == 0)
         return 0;
-    if (!strcasecmp(word, "b"))
+    if ((*word == 'b' || *word == 'B') && word[1] == 0)
         return 1;
-    if (!strcasecmp(word, "x"))
+    if ((*word == 'x' || *word == 'X') && word[1] == 0)
         return 2;
-    if (!strcasecmp(word, "y"))
+    if ((*word == 'y' || *word == 'Y') && word[1] == 0)
         return 3;
 
     return 0xff;