American Megatrends MAN-772 Fast ATA, Ultra DMA/33, Floppy, Parallel Port, Serial Ports, Keyboard

Overview, Continued

BIOS Shadowing The system BIOS is always copied from ROM to RAM for faster execution. The end user can shadow 16 KB ROM segments from C0000h – DCFFFh.

IDE	The Apollo IV motherboard has two 40-pin IDE connectors onboard that
	support up to four IDE drives (hard disk drives, CD-ROM drives, or tape
	drives). The integrated PCI bus master enhanced IDE controller is on the PCI
	local bus. The IDE controller supports the Ultra DMA/33 protocol, which
	doubles the hard disk drive data transfer rates specified in the ATA-2
	standards to 33 MBs while maintaining full backward compatibility with
	existing PIO mode 3, PIO mode 4, and DMA mode 2 devices.
Fast ATA
	The motherboard supports the Fast ATA specification using PIO mode 4 and
	multiword DMA mode 2.
Ultra DMA/33
	This motherboard includes an integrated enhanced IDE PCI bus master IDE
	controller that supports the Ultra DMA/33 protocol. The Ultra DMA/33
	protocol permits data transfer rates up to 33 MBs. Ultra DMA/33 also reduces
	the CPU workload and permits increased CPU utilization. Ultra DMA/33 is
	completely backward-compatible with older DMA standards.
Floppy
	The Apollo IV motherboard has an onboard floppy controller that supports up
	to two 360 KB, 720 KB, 1.2 MB, 1.44 MB, or 2.88 MB floppy drives.
Parallel Port
	The Apollo IV motherboard has an onboard ECP and EPP-capable parallel
	port connector.
Serial Ports
	The Apollo IV motherboard has two onboard serial port connectors and two
	16550 UART serial ports.
Keyboard
	The Apollo IV motherboard Includes a standard DIN keyboard connector.
	Cont’d

Chapter 1 Hardware Installation 5