diff --git a/flash_enable.c b/flash_enable.c
new file mode 100644
index 0000000..8a9bf04
--- /dev/null
+++ b/flash_enable.c
@@ -0,0 +1,278 @@
+#include <sys/io.h>
+#include <stdio.h>
+#include <pci/pci.h>
+#include <stdlib.h>
+
+static int enable_flash_sis630 (struct pci_dev *dev, char *name)
+{
+	char b;
+
+	/* get io privilege access PCI configuration space */
+	if (iopl(3) != 0) {
+		perror("Can not set io priviliage");
+		exit(1);
+	}
+
+	/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
+	outl(0x80000840, 0x0cf8);
+	b = inb(0x0cfc) | 0x0b;
+	outb(b, 0xcfc);
+	/* Flash write enable on SiS 540/630 */
+	outl(0x80000845, 0x0cf8);
+	b = inb(0x0cfd) | 0x40;
+	outb(b, 0xcfd);
+
+	/* The same thing on SiS 950 SuperIO side */
+	outb(0x87, 0x2e);
+	outb(0x01, 0x2e);
+	outb(0x55, 0x2e);
+	outb(0x55, 0x2e);
+
+	if (inb(0x2f) != 0x87) {
+		outb(0x87, 0x4e);
+		outb(0x01, 0x4e);
+		outb(0x55, 0x4e);
+		outb(0xaa, 0x4e);
+		if (inb(0x4f) != 0x87) {
+			printf("Can not access SiS 950\n");
+			return -1;
+		}
+		outb(0x24, 0x4e);
+		b = inb(0x4f) | 0xfc;
+		outb(0x24, 0x4e);
+		outb(b, 0x4f);
+		outb(0x02, 0x4e);
+		outb(0x02, 0x4f);	
+	}
+
+	outb(0x24, 0x2e);
+	printf("2f is %#x\n", inb(0x2f));
+	b = inb(0x2f) | 0xfc;
+	outb(0x24, 0x2e);
+	outb(b, 0x2f);
+
+	outb(0x02, 0x2e);
+	outb(0x02, 0x2f);
+
+	return 0;
+}
+
+static int enable_flash_e7500(struct pci_dev *dev, char *name)
+{
+	/* register 4e.b gets or'ed with one */
+	unsigned char old, new;
+	/* if it fails, it fails. There are so many variations of broken mobos
+	 * that it is hard to argue that we should quit at this point. 
+	 */
+  
+	old = pci_read_byte(dev, 0x4e);
+
+	new = old | 1;
+
+	if (new == old)
+		return 0;
+
+	pci_write_byte(dev, 0x4e, new);
+
+	if (pci_read_byte(dev, 0x4e) != new) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x4e, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_vt8235(struct pci_dev *dev, char *name)
+{
+	unsigned char old, new, val;
+	unsigned int base;
+	int ok;
+  
+	/* get io privilege access PCI configuration space */
+	if (iopl(3) != 0) {
+		perror("Can not set io priviliage");
+		exit(1);
+	}
+
+	old = pci_read_byte(dev, 0x40);
+
+	new = old | 0x10;
+
+	if (new == old)
+		return 0;
+
+	ok = pci_write_byte(dev, 0x40, new);
+	if (ok != 0) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       old, new, name);
+	}
+
+	/* enable GPIO15 which is connected to write protect. */
+	base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
+	val = inb(base + 0x4d);
+	val |= 0x80;
+	outb(val, base + 0x4d);
+
+	if (ok != 0) {
+		return -1;
+	} else {
+		return 0;
+	}
+}
+
+static int enable_flash_vt8231(struct pci_dev *dev, char *name)
+{
+	unsigned char val;
+  
+	val = pci_read_byte(dev, 0x40);
+	val |= 0x10;
+	pci_write_byte(dev, 0x40, val);
+
+	if (pci_read_byte(dev, 0x40) != val) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x40, val, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_cs5530(struct pci_dev *dev, char *name)
+{
+	unsigned char new;
+  
+	pci_write_byte(dev, 0x52, 0xee);
+
+	new = pci_read_byte(dev, 0x52);
+
+	if (new != 0xee) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x52, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_sc1100(struct pci_dev *dev, char *name)
+{
+	unsigned char new;
+  
+	pci_write_byte(dev, 0x52, 0xee);
+
+	new = pci_read_byte(dev, 0x52);
+
+	if (new != 0xee) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x52, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_sis5595(struct pci_dev *dev, char *name)
+{
+	unsigned char new, newer;
+  
+	new = pci_read_byte(dev, 0x45);
+
+	/* clear bit 5 */
+	new &= (~ 0x20);
+	/* set bit 2 */
+	new |= 0x4;
+
+	pci_write_byte(dev, 0x45, new);
+
+	newer = pci_read_byte(dev, 0x45);
+	if (newer != new) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x45, new, name);
+		printf("Stuck at 0x%x\n", newer);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_amd8111(struct pci_dev *dev, char *name) {
+	/* register 4e.b gets or'ed with one */
+	unsigned char old, new;
+	/* if it fails, it fails. There are so many variations of broken mobos
+	 * that it is hard to argue that we should quit at this point. 
+	 */
+
+	//dump_pci_device(dev); 
+
+	old = pci_read_byte(dev, 0x43);
+	new = old | 0x80;
+	if (new != old) {
+		pci_write_byte(dev, 0x43, new);
+		if (pci_read_byte(dev, 0x43) != new) {
+			printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+			       0x43, new, name);
+		}
+	}
+
+	old = pci_read_byte(dev, 0x40);  
+	new = old | 0x01;
+	if (new == old)
+		return 0;
+	pci_write_byte(dev, 0x40, new);
+
+	if (pci_read_byte(dev, 0x40) != new) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+		       0x40, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+typedef struct penable {
+	unsigned short vendor, device; 
+	char *name;
+	int (*doit)(struct pci_dev *dev, char *name);
+} FLASH_ENABLE;
+
+static FLASH_ENABLE enables[] = {
+	{0x1039, 0x0630, "sis630",  enable_flash_sis630},
+	{0x8086, 0x2480, "E7500",   enable_flash_e7500},
+	{0x1106, 0x8231, "VT8231",  enable_flash_vt8231},
+	{0x1106, 0x3177, "VT8235",  enable_flash_vt8235},
+	{0x1078, 0x0100, "CS5530",  enable_flash_cs5530},
+	{0x100b, 0x0510, "SC1100",  enable_flash_sc1100},
+	{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
+	{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
+};
+  
+int enable_flash_write()
+{
+	int i;
+	struct pci_access *pacc;
+	struct pci_dev *dev = 0;
+	FLASH_ENABLE *enable = 0;
+
+	pacc = pci_alloc();           /* Get the pci_access structure */
+	/* Set all options you want -- here we stick with the defaults */
+	pci_init(pacc);               /* Initialize the PCI library */
+	pci_scan_bus(pacc);           /* We want to get the list of devices */
+
+	/* now let's try to find the chipset we have ... */
+	for (i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
+		struct pci_filter f;
+		struct pci_dev *z;
+		/* the first param is unused. */
+		pci_filter_init((struct pci_access *) 0, &f);
+		f.vendor = enables[i].vendor;
+		f.device = enables[i].device;
+		for (z=pacc->devices; z; z=z->next)
+			if (pci_filter_match(&f, z)) {
+				enable = &enables[i];
+				dev = z;
+			}
+	}
+
+	/* now do the deed. */
+	if (enable) {
+		printf("Enabling flash write on %s...", enable->name);
+		if (enable->doit(dev, enable->name) == 0)
+			printf("OK\n");
+	}
+	return 0;
+}