NEC PH133 Interrupt and Control ASIC, Inca, the keyboard, mouse, system board voltages and, 1 MB

Interrupt and Control ASIC	Onboard Interrupt and Control ASIC (INCA) provides PCI
(INCA)	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	Detects software or hardware failures and, after a preset time
Timer (p/o INCA)	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.
Memory Modules with	Two memory module expansion slots on the system board
Upgradeable Memory	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	Expansion slots for up to eight add-in boards, including four
Support	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.
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.
Advanced I/O Peripheral	Integrated Intel 82091AA controller on the system board
Controller	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).
Real-time Clock Module	Real-time clock (RTC) module with integrated lithium
	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.
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.