Toshiba TECRA S1 用户手册

 BIOS ROM (flash E2PROM) 

• 4Mb x 1 chip (512KB flash parts) 

−  64 KB used for system BIOS 

−  64 KB used for VGA 

−  20 KB used for PnP 

−  4 KB for password security 

−  36 KB used for bootstrap 

−  84 KB used for ACPI P code 

−  36 KB used for LOGO 

−  48 KB used for LAN 

−  64 KB used for EC BIOS 

−  92 KB reserved 

−  3.3 volt operation 

−  Access time of 90 ns 

−  8-bit data transfer 

 

 System controllers 

• North Bridge: Intel 855 PM (ODEM) (MCH-M) 

−  CPU interface and control 

−  DRAM control 

−  PCI master/slave interface (PCI R2.2 compliant) 

−  AGP master/slave interface (AGP1.0 compliant, AGP V2.0 compliant 

x 4 modes) 
 

• South Bridge: Intel ICH4-M 

−  Enhanced DMA controller 

−  Interrupt controller 

−  Counter/timer 

−  PCI IDE controller 

−  Support for ATA-66 (GB) and ATA-100 (30/40/60 GB) 

−  USB interface 

−  SMBus interface 

−  Super I/O interface 

−  Power management control 

−  Suspend/resume control 

−  ACPI support 

 

 PC Card controller 

• CB720 

−  CardBus/PC Card controller 

−  SD Card controller