--- a/v09.c	Mon Jul 02 19:07:39 2018 +0900
+++ b/v09.c	Mon Jul 02 21:39:55 2018 +0900
@@ -38,8 +38,9 @@
 
 FILE *tracefile;
 
-extern FILE *fp;
-extern char *prog;
+extern FILE *disk[];
+extern FILE *fp;      // for disasm
+extern char *prog;    // for disasm
 extern void disasm(int,int);
 
 void do_trace(FILE *tracefile)
@@ -115,6 +116,12 @@
      i++;
      timer = 0;  // non standard rom image, don't start timer
      romfile = argv[i];
+   } else if (strcmp(argv[i],"-0")==0) {
+      i++;
+      disk[0] = fopen(argv[i],"r+");
+   } else if (strcmp(argv[i],"-1")==0) {
+      i++;
+      disk[1] = fopen(argv[i],"r+");
    } else if (strcmp(argv[i],"-tl")==0) {
      i++;
      tracelo=strtol(argv[i],(char**)0,0);