diff --git a/pc-bios/bios.bin b/pc-bios/bios.bin
index 408dc7737e..e34914661c 100644
Binary files a/pc-bios/bios.bin and b/pc-bios/bios.bin differ
diff --git a/pc-bios/bios.diff b/pc-bios/bios.diff
index 7fe42ad355..4f40d7a7ae 100644
--- a/pc-bios/bios.diff
+++ b/pc-bios/bios.diff
@@ -1,10 +1,34 @@
+? _rombios_.c
+? _rombiosl_.c
+? biossums
+? rombios.s
+? rombios.sym
+? rombios.txt
+? rombios16.bin
+? rombios32.bin
+? rombios32.out
+? rombiosl.s
+? rombiosl.sym
+? rombiosl.txt
+Index: BIOS-bochs-latest
+===================================================================
+RCS file: /cvsroot/bochs/bochs/bios/BIOS-bochs-latest,v
+retrieving revision 1.173
+diff -u -d -p -r1.173 BIOS-bochs-latest
+Binary files /tmp/cvsItPJ31 and BIOS-bochs-latest differ
+Index: BIOS-bochs-legacy
+===================================================================
+RCS file: /cvsroot/bochs/bochs/bios/BIOS-bochs-legacy,v
+retrieving revision 1.33
+diff -u -d -p -r1.33 BIOS-bochs-legacy
+Binary files /tmp/cvsMYE2Kz and BIOS-bochs-legacy differ
 Index: rombios.c
 ===================================================================
 RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
 retrieving revision 1.207
 diff -u -d -p -r1.207 rombios.c
 --- rombios.c	21 Apr 2008 14:22:01 -0000	1.207
-+++ rombios.c	27 Apr 2008 23:40:19 -0000
++++ rombios.c	28 Apr 2008 07:53:57 -0000
 @@ -4404,22 +4404,25 @@ BX_DEBUG_INT15("case default:\n");
  #endif // BX_USE_PS2_MOUSE
  
@@ -128,7 +152,7 @@ RCS file: /cvsroot/bochs/bochs/bios/rombios.h,v
 retrieving revision 1.6
 diff -u -d -p -r1.6 rombios.h
 --- rombios.h	26 Jan 2008 09:15:27 -0000	1.6
-+++ rombios.h	27 Apr 2008 23:40:19 -0000
++++ rombios.h	28 Apr 2008 07:53:57 -0000
 @@ -19,7 +19,7 @@
  //  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  
@@ -144,7 +168,7 @@ RCS file: /cvsroot/bochs/bochs/bios/rombios32.c,v
 retrieving revision 1.26
 diff -u -d -p -r1.26 rombios32.c
 --- rombios32.c	8 Apr 2008 16:41:18 -0000	1.26
-+++ rombios32.c	27 Apr 2008 23:40:19 -0000
++++ rombios32.c	28 Apr 2008 07:53:58 -0000
 @@ -478,7 +478,12 @@ void smp_probe(void)
          sipi_vector = AP_BOOT_ADDR >> 12;
          writel(APIC_BASE + APIC_ICR_LOW, 0x000C4600 | sipi_vector);
@@ -158,42 +182,15 @@ diff -u -d -p -r1.26 rombios32.c
  
          smp_cpus = readw((void *)CPU_COUNT_ADDR);
      }
-@@ -1081,7 +1086,7 @@ struct rsdp_descriptor         /* Root S
- struct rsdt_descriptor_rev1
- {
- 	ACPI_TABLE_HEADER_DEF                           /* ACPI common table header */
--	uint32_t                             table_offset_entry [3]; /* Array of pointers to other */
-+	uint32_t                             table_offset_entry [2]; /* Array of pointers to other */
- 			 /* ACPI tables */
- };
- 
-@@ -1335,8 +1340,8 @@ void acpi_bios_init(void)
-     struct fadt_descriptor_rev1 *fadt;
-     struct facs_descriptor_rev1 *facs;
-     struct multiple_apic_table *madt;
--    uint8_t *dsdt, *ssdt;
--    uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr, ssdt_addr;
-+    uint8_t *dsdt;
-+    uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr;
-     uint32_t acpi_tables_size, madt_addr, madt_size;
-     int i;
- 
-@@ -1370,10 +1375,6 @@ void acpi_bios_init(void)
-     dsdt = (void *)(addr);
-     addr += sizeof(AmlCode);
- 
--    ssdt_addr = addr;
--    ssdt = (void *)(addr);
--    addr += acpi_build_processor_ssdt(ssdt);
--
-     addr = (addr + 7) & ~7;
-     madt_addr = addr;
-     madt_size = sizeof(*madt) +
-@@ -1403,7 +1404,6 @@ void acpi_bios_init(void)
-     memset(rsdt, 0, sizeof(*rsdt));
-     rsdt->table_offset_entry[0] = cpu_to_le32(fadt_addr);
-     rsdt->table_offset_entry[1] = cpu_to_le32(madt_addr);
--    rsdt->table_offset_entry[2] = cpu_to_le32(ssdt_addr);
-     acpi_build_table_header((struct acpi_table_header *)rsdt,
-                             "RSDT", sizeof(*rsdt), 1);
- 
+@@ -1423,9 +1428,8 @@ void acpi_bios_init(void)
+     fadt->pm1_evt_len = 4;
+     fadt->pm1_cnt_len = 2;
+     fadt->pm_tmr_len = 4;
+-    fadt->plvl2_lat = cpu_to_le16(50);
+-    fadt->plvl3_lat = cpu_to_le16(50);
+-    fadt->plvl3_lat = cpu_to_le16(50);
++    fadt->plvl2_lat = cpu_to_le16(0x0fff); // C2 state not supported
++    fadt->plvl3_lat = cpu_to_le16(0x0fff); // C3 state not supported
+     /* WBINVD + PROC_C1 + PWR_BUTTON + SLP_BUTTON + FIX_RTC */
+     fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 4) | (1 << 5) | (1 << 6));
+     acpi_build_table_header((struct acpi_table_header *)fadt, "FACP",