diff --git a/buspirate_spi.c b/buspirate_spi.c
index f1a0be1..dc491e2 100644
--- a/buspirate_spi.c
+++ b/buspirate_spi.c
@@ -316,4 +316,39 @@
 	return spi_read_chunked(flash, buf, start, len, 12);
 }
 
-/* We could do 12-byte writes, but for now we use the generic 1-byte code. */
+int buspirate_spi_write_256(struct flashchip *flash, uint8_t *buf)
+{
+	int total_size = 1024 * flash->total_size;
+	int i;
+
+	spi_disable_blockprotect();
+	/* Erase first. */
+	msg_pinfo("Erasing flash before programming... ");
+	if (erase_flash(flash)) {
+		msg_perr("ERASE FAILED!\n");
+		return -1;
+	}
+	msg_pinfo("done.\n");
+
+	/* FIXME: We could do 12 byte writes, but then we'd have to make sure
+	 * not to cross a 256 byte page boundary. This problem only applies to
+	 * writes, reads can cross page boundaries just fine.
+	 */
+	for (i = 0; i < total_size; i += 8) {
+		int l, r;
+		if (i + 8 <= total_size)
+			l = 8;
+		else
+			l = total_size - i;
+
+		if ((r = spi_nbyte_program(i, &buf[i], l))) {
+			msg_perr("%s: write fail %d\n", __func__, r);
+			return 1;
+		}
+
+		while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP)
+			/* loop */;
+	}
+
+	return 0;
+}
diff --git a/flash.h b/flash.h
index 34b04e6..aee95a3 100644
--- a/flash.h
+++ b/flash.h
@@ -504,6 +504,7 @@
 int buspirate_spi_shutdown(void);
 int buspirate_spi_send_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr);
 int buspirate_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len);
+int buspirate_spi_write_256(struct flashchip *flash, uint8_t *buf);
 
 /* dediprog.c */
 int dediprog_init(void);
diff --git a/spi.c b/spi.c
index 41bb8f3..8bbbe6e 100644
--- a/spi.c
+++ b/spi.c
@@ -108,7 +108,7 @@
 		.command = buspirate_spi_send_command,
 		.multicommand = default_spi_send_multicommand,
 		.read = buspirate_spi_read,
-		.write_256 = spi_chip_write_1,
+		.write_256 = buspirate_spi_write_256,
 	},
 #endif