diff --git a/src/apple2.c b/src/apple2.c
index 57340b4..5c2132e 100644
--- a/src/apple2.c
+++ b/src/apple2.c
@@ -334,11 +334,13 @@ apple2_run_loop(apple2 *mach)
     }
 
     while (vm_screen_active(mach->screen)) {
+#if 0
         mach->drive1->locked = true;
         mach->drive2->locked = true;
         mos6502_dis_opcode(mach->cpu, stdout, mach->cpu->PC);
         mach->drive1->locked = false;
         mach->drive2->locked = false;
+#endif
 
         mos6502_execute(mach->cpu);