Справочник Пользователя для NEC PH133
Interrupt and Control ASIC
(INCA)
(INCA)
Onboard Interrupt and Control ASIC (INCA) provides PCI
interrupt control. An integrated automatic APIC sensor is
capable of full dual-Pentium and quad-Pentium processor
symmetric multi-processing support. An INCA component
provides support for PCI arbitration, interrupt steering, and a
second I/O APIC. It also drives the front panel interface and
LCD display for security and server management functions. A
System Management Interrupt (SMI) component monitors
the keyboard, mouse, system board voltages and
temperatures, and server door opening.
interrupt control. An integrated automatic APIC sensor is
capable of full dual-Pentium and quad-Pentium processor
symmetric multi-processing support. An INCA component
provides support for PCI arbitration, interrupt steering, and a
second I/O APIC. It also drives the front panel interface and
LCD display for security and server management functions. A
System Management Interrupt (SMI) component monitors
the keyboard, mouse, system board voltages and
temperatures, and server door opening.
Programmable Watchdog
Timer (p/o INCA)
Timer (p/o INCA)
Detects software or hardware failures and, after a preset time
limit, generates an asynchronous system reset (ASR) signal
to automatically reset the server (equivalent to a hard reset).
limit, generates an asynchronous system reset (ASR) signal
to automatically reset the server (equivalent to a hard reset).
Secondary Cache
1-MB L2 synchronous cache for each CPU module; cache is
not shared in SMP.
not shared in SMP.
Memory Modules with
Upgradeable Memory
Upgradeable Memory
Two memory module expansion slots on the system board
support up to two ECC (Error Checking and Correcting)
memory modules. The modules provide automatic error
correction of all single bit errors and detection of all double
bit errors. Each module supports up to 384 MB of 70 ns, fast
page mode, 36-bit SIMMs.
support up to two ECC (Error Checking and Correcting)
memory modules. The modules provide automatic error
correction of all single bit errors and detection of all double
bit errors. Each module supports up to 384 MB of 70 ns, fast
page mode, 36-bit SIMMs.
Add-in Expansion Board
Support
Support
Expansion slots for up to eight add-in boards, including four
EISA slots, two PCI slots, and two shared PCI/EISA slots.
EISA slots, two PCI slots, and two shared PCI/EISA slots.
PCI Controller
Onboard PCI controller controls the system board's two
dedicated PCI slots and two shared PCI/EISA slots. Also
provides interface between processor and PCI bus, and a
bridge between the PCI bus and EISA bus.
dedicated PCI slots and two shared PCI/EISA slots. Also
provides interface between processor and PCI bus, and a
bridge between the PCI bus and EISA bus.
SCSI Controllers
Two integrated PCI-based Adaptec SCSI-2 AIC-7870
controllers (channels A and B) on the system board support
up to seven 8-bit narrow SCSI devices or up to fifteen 8-bit
narrow and/or 16-bit wide SCSI devices. Features 32-bit PCI
bus master interface for maximum bus transfer rates.
controllers (channels A and B) on the system board support
up to seven 8-bit narrow SCSI devices or up to fifteen 8-bit
narrow and/or 16-bit wide SCSI devices. Features 32-bit PCI
bus master interface for maximum bus transfer rates.
Advanced I/O Peripheral
Controller
Controller
Integrated Intel 82091AA controller on the system board
supports 3 1/2-inch and 5 1/4-inch diskette drives, two 8/16-
bit integrated drive electronic (IDE) hard drives, a parallel
port, and two serial ports.
supports 3 1/2-inch and 5 1/4-inch diskette drives, two 8/16-
bit integrated drive electronic (IDE) hard drives, a parallel
port, and two serial ports.
Video Controller
Integrated Cirrus Logic CL-GD5424 super VGA controller
shipped with 512 KB, 70 ns video memory (upgradeable to
1 MB).
shipped with 512 KB, 70 ns video memory (upgradeable to
1 MB).
Real-time Clock Module
Real-time clock (RTC) module with integrated lithium
battery and 8 KB of non-volatile random access memory
(NVRAM).
battery and 8 KB of non-volatile random access memory
(NVRAM).
External Device Connectors
I/O riser board on system board has connectors for two serial
ports, parallel port, PS/2™ compatible keyboard and mouse,
and VGA monitor.
ports, parallel port, PS/2™ compatible keyboard and mouse,
and VGA monitor.
Flash Memory BIOS
Flashable memory device contains system BIOS, SCSI
BIOS, EISA configuration utility (ECU), video BIOS, power-
on self-test (POST), video BIOS, PCI/EISA configuration
information, and BIOS recovery utility.
BIOS, EISA configuration utility (ECU), video BIOS, power-
on self-test (POST), video BIOS, PCI/EISA configuration
information, and BIOS recovery utility.