Make x.block isolation consistent

diff --git a/minsk.c b/minsk.c
index 9fd3fa440785b7e75540ddf4d8a7faba221209d4..6091229e5ee27e1eb40a0ca4dbbdf4341cda10e4 100644 (file)
--- a/minsk.c
+++ b/minsk.c
@@ -472,7 +472,7 @@ static void run(void)
       int op = (w >> 30) & 0177;       // Operation code
       int ax = (w >> 28) & 3;          // Address extensions supported in Minsk-22 mode
       int ix = (w >> 24) & 15;         // Indexing
-      loc x = { (ax & 2) >> 1, (w >> 12) & 07777 };    // Operands (original form)
+      loc x = { ax >> 1, (w >> 12) & 07777 };  // Operands (original form)
       loc y = { ax & 1, w & 07777 };
       loc xi=x, yi=y;                  // (indexed form)
       if (trace)