HP KAYAK XU800 The Super I/O Controller (NS 87364), FDC, Controller, Serial / Parallel

2 System Board

The Input/Output Controller Hub (82801AA)

The Super I/O Controller (NS 87364)

The Super I/O chip (NS 87364) provides the control for two FDD devices, two serial ports, one bidirectional multi-mode parallel port and a keyboard and mouse controller.

		Device	Index	Data
		Super I/O	2Eh	2Fh
Serial / Parallel
	The 9-pin serial ports (whose pin layouts are depicted on page 138) support
Communications Ports	RS-232-C and are buffered by 16550A UARTs, with 16-Byte FIFOs. They can
	be programmed as COM1, COM2, COM3, COM4, or disabled.

The 25-pin parallel port (also depicted on page 139) is Centronics compatible, supporting IEEE 1284. It can be programmed as LPT1, LPT2, or disabled. It can operate in the four following modes:

❒Standard mode (PC/XT, PC/AT, and PS/2 compatible).

❒Bidirectional mode (PC/XT, PC/AT, and PS/2 compatible).

❒Enhanced mode (enhanced parallel port, EPP, compatible).

❒High speed mode (MS/HP extended capabilities port, ECP, compatible).

FDC	The integrated floppy disk controller (FDC) supports any combination of
	two of the following: tape drives, 3.5-inch flexible disk drives, 5.25-inch
	flexible disk drives. It is software and register-compatible with the 82077AA,
	and 100% IBM-compatible. It has an A and B drive-swapping capability and
	a non-burst DMA option.
Keyboard and Mouse	The computer has an 8042-based keyboard and mouse controller. The
Controller	connector pin layouts are shown on page 137.

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