Intel 486MIS Quick Start Manual page 5

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Supports Processor Programmed I/O.
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Multitasking ASPI manager for DOS.
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On-board BIOS supports boot capability, and up to two hard disk
drives under DOS without a software driver.
·
Supports wide range of both synchronous and asynchronous
devices: disk, Tape, CD-ROM, WORM, DAT, and other SCSI
peripherals.
IDE Port:
·
Turbo/Normal selections for fast or slow IDE hard drives.
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Plug and play, replaces any non-intelligent IDE controller without
reformatting the disk drives.
·
Software drivers are not required for all operating systems.
Floppy Disk Controller:
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Fully IBM register set compatible.
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Supports up to two 3.5-inch or 5.25-inch floppy disk drives.
·
Supports 360KB / 720KB / 1.2MB / 1.44MB densities.
·
Floppy Disk Controller can be disabled.
Peripherals:
·
Supports two Serial ports and one Parallel port.
486MIS System Board User's Manual Page 5