--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/lunadrv/regcmd.c	Thu May 07 02:40:13 2020 +0000
@@ -0,0 +1,45 @@
+/*
+ * Handy commands for reading and writing LCD controller registers.
+ */
+
+#include <sys/types.h>
+#include "types.h"
+#include "luna.h"
+
+void
+cmd_rd(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u_long regno;
+
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (parse_hexarg(argv[0], 4, &regno) < 0) {
+	    printf("ERROR: regno argument must be a valid 16-bit hex word\n");
+		return;
+	}
+	LCD_IR = regno;
+	printf("%04X\n", LCD_DR);
+}
+
+void
+cmd_wr(argbulk)
+	char *argbulk;
+{
+	char *argv[3];
+	u_long regno, value;
+
+	if (parse_args(argbulk, 2, 2, argv, 0) < 0)
+		return;
+	if (parse_hexarg(argv[0], 4, &regno) < 0) {
+	    printf("ERROR: regno argument must be a valid 16-bit hex word\n");
+		return;
+	}
+	if (parse_hexarg(argv[1], 4, &value) < 0) {
+	    printf("ERROR: value argument must be a valid 16-bit hex word\n");
+		return;
+	}
+	LCD_IR = regno;
+	LCD_DR = value;
+}