diff --git a/main.c b/main.c
index 2e57c5d..9ec6f0b 100644
--- a/main.c
+++ b/main.c
@@ -141,6 +141,47 @@ static int cmd_md(char **arg)
 	return 0;
 }
 
+static int cmd_mw(char **arg)
+{
+	char *off_text = get_arg(arg);
+	char *byte_text;
+	int offset = 0;
+	int length = 0;
+	u_int8_t buf[1024];
+
+	if (!off_text) {
+		fprintf(stderr, "md: offset must be specified\n");
+		return -1;
+	}
+
+	if (stab_parse(off_text, &offset) < 0) {
+		fprintf(stderr, "md: can't parse offset: %s\n", off_text);
+		return -1;
+	}
+
+	while ((byte_text = get_arg(arg))) {
+		if (length >= sizeof(buf)) {
+			fprintf(stderr, "md: maximum length exceeded\n");
+			return -1;
+		}
+
+		buf[length++] = strtoul(byte_text, NULL, 16);
+	}
+
+	if (!length)
+		return 0;
+
+	if (offset < 0 || (offset + length) > 0x10000) {
+		fprintf(stderr, "md: memory out of range\n");
+		return -1;
+	}
+
+	if (msp430_dev->writemem(offset, buf, length) < 0)
+		return -1;
+
+	return 0;
+}
+
 static void disassemble(u_int16_t offset, u_int8_t *data, int length)
 {
 	int first_line = 1;
@@ -673,6 +714,10 @@ static const struct command all_commands[] = {
 "md <address> [length]\n"
 "    Read the specified number of bytes from memory at the given address,\n"
 "    and display a hexdump.\n"},
+	{"mw",          cmd_mw,
+"mw <address> bytes ...\n"
+"    Write a sequence of bytes to a memory address. Byte values are\n"
+"    two-digit hexadecimal numbers.\n"},
 	{"nosyms",	cmd_nosyms,
 "nosyms\n"
 "    Clear the symbol table.\n"},
diff --git a/mspdebug.man b/mspdebug.man
index 65fa381..562168f 100644
--- a/mspdebug.man
+++ b/mspdebug.man
@@ -125,6 +125,10 @@ The output is split into three columns. The first column shows the
 starting address for the line. The second column lists the hexadecimal
 values of the bytes. The final column shows the ASCII characters
 corresponding to printable bytes, and . for non-printing characters.
+.IP "mw \fIaddress\fR \fIbytes\fR ..."
+Write a sequence of bytes at the given memory address. The address given
+may be an address expression. Bytes values are two-digit hexadecimal
+numbers separated by spaces.
 .IP "nosyms"
 Clear all symbols from the symbol table. Symbols may be reloaded with
 the \fBsyms\fR command.