--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lldbg/cmd_r16.c	Thu Jun 09 00:02:41 2016 +0000
@@ -0,0 +1,26 @@
+/*
+ * r16 hexaddr -- read a 16-bit register or memory location
+ */
+
+#include <sys/types.h>
+#include "types.h"
+
+void
+lldbg_cmd_r16(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u_long addr;
+
+	if (lldbg_parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (lldbg_parse_hexarg(argv[0], 8, &addr) < 0) {
+	  lldbg_printf("ERROR: argument must be a valid 32-bit hex address\n");
+		return;
+	}
+	if (addr & 1) {
+		lldbg_printf("ERROR: unaligned address\n");
+		return;
+	}
+	lldbg_printf("%04X\n", *(volatile u16 *)addr);
+}