diff --git a/src/modal.c b/src/modal.c
index 3fd69c8..9f5c316 100644
--- a/src/modal.c
+++ b/src/modal.c
@@ -9,13 +9,36 @@ static Rule rules[0x100];
 static char dict[0x8000], *next = dict;
 static char prog[0x1000], *prog_ = prog;
 
+static char *regs[0x100];
+
+static void
+bind(int id, char *addr)
+{
+	printf("bind register %02x -> %s\n", id, addr);
+	regs[id] = addr;
+}
+
+static char *
+walk(char *s)
+{
+	char c;
+	while((c = *s++))
+		if(*s == ')') break;
+	return s;
+}
+
 static int
 match(char *p, Rule *r)
 {
 	char c, *a = r->a, *b = p;
 	while((c = *a)) {
+		/* registers */
 		if(c == '?') {
-			printf("WILDCARD: %s | %s\n", p, r->a);
+			char cc;
+			int id = *(++a);
+			bind(id, b);
+			a++, b = walk(b);
+			printf("[%s][%s]\n", a, b);
 		}
 		if(c != *b) return 0;
 		a++, b++;