Index: qemu-snapshot-2007-02-09_05/hw/piix_pci.c
===================================================================
--- qemu-snapshot-2007-02-09_05.orig/hw/piix_pci.c
+++ qemu-snapshot-2007-02-09_05/hw/piix_pci.c
@@ -155,7 +155,7 @@ static int i440fx_load(QEMUFile* f, void
     return 0;
 }
 
-PCIBus *i440fx_init(PCIDevice **pi440fx_state, qemu_irq *pic)
+PCIBus *i440fx_init(PCIDevice **pi440fx_state, qemu_irq *pic, int ram_size)
 {
     PCIBus *b;
     PCIDevice *d;
@@ -186,6 +186,10 @@ PCIBus *i440fx_init(PCIDevice **pi440fx_
     d->config[0x0a] = 0x00; // class_sub = host2pci
     d->config[0x0b] = 0x06; // class_base = PCI_bridge
     d->config[0x0e] = 0x00; // header_type
+    ram_size = ram_size / 8 / 1024 / 1024;
+    if (ram_size > 255)
+        ram_size = 255;
+    d->config[0x57] = ram_size;
 
     d->config[0x72] = 0x02; /* SMRAM */
 
Index: qemu-snapshot-2007-02-09_05/hw/pc.c
===================================================================
--- qemu-snapshot-2007-02-09_05.orig/hw/pc.c
+++ qemu-snapshot-2007-02-09_05/hw/pc.c
@@ -623,7 +623,7 @@ static void pc_init1(int ram_size, int v
     }
 
     if (pci_enabled) {
-        pci_bus = i440fx_init(&i440fx_state, i8259);
+        pci_bus = i440fx_init(&i440fx_state, i8259, ram_size);
         piix3_devfn = piix3_init(pci_bus, -1);
     } else {
         pci_bus = NULL;
Index: qemu-snapshot-2007-02-09_05/hw/pc.h
===================================================================
--- qemu-snapshot-2007-02-09_05.orig/hw/pc.h
+++ qemu-snapshot-2007-02-09_05/hw/pc.h
@@ -841,7 +841,7 @@ PCIBus *pci_apb_init(target_ulong specia
 PCIBus *pci_vpb_init(void *pic, int irq, int realview);
 
 /* piix_pci.c */
-PCIBus *i440fx_init(PCIDevice **pi440fx_state, qemu_irq *pic);
+PCIBus *i440fx_init(PCIDevice **pi440fx_state, qemu_irq *pic, int ram_size);
 void i440fx_set_smm(PCIDevice *d, int val);
 int piix3_init(PCIBus *bus, int devfn);
 void i440fx_init_memory_mappings(PCIDevice *d);