1 Hardware Overview 1.2 System Unit Block Diagram
1-8 TECRA S1 Maintenance Manual
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
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48 KB used for LAN
−
64 KB used for EC BIOS
−
92 KB reserved
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3.3 volt operation
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Access time of 90 ns
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8-bit data transfer
System controllers
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North Bridge: Intel 855 PM (ODEM) (MCH-M)
−
CPU interface and control
−
DRAM control
−
PCI master/slave interface (PCI R2.2 compliant)
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AGP master/slave interface (AGP1.0 compliant, AGP V2.0 compliant
x 4 modes)
•
South Bridge: Intel ICH4-M
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Enhanced DMA controller
−
Interrupt controller
−
Counter/timer
−
PCI IDE controller
−
Support for ATA-66 (GB) and ATA-100 (30/40/60 GB)
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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