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Motherboard Description SY-6IWM
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operation.
l Bi-directional high-speed ECP
1-8.3 Diskette Drive Controller
The I/O controller is software compatible with the 82077 diskette drive controller
and supports both PC-AT and PS/2 modes. In the Setup program, the diskette drive
interface can be configured for the following diskette drive capacities and sizes.
l 360 KB, 5.25-inch
l 1.2 MB, 5.25-inch
l 720 KB, 3.5-inch
l 1.2 MB. 3.5-inch (driver required)
l 1.25-1.44 MB, 3.5-inch
l 2.88 MB, 3.5-inch
1-8.4 PS/2 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel of the
motherboard. The +5 V lines to these connectors are protected with a fuse circuit
that, like a self-healing fuse, reestablishes the connection after an over-current
condition is removed.
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Note
The mouse and keyboard can be plugged into either PS/2 connector. Power to the
computer should be turned off before a keyboard or mouse is connected or
disconnected.
The keyboard controller contains code, which provides the traditional keyboard
and mouse control functions, and also supports Power On/Reset password
protection. Power On/Reset password can be specified in the BIOS Setup program.
The keyboard controller also supports the hot-key sequence <Ctrl><Alt><Del>,
software reset. This key sequence resets the computer’ s software by jumping to the
beginning of the BIOS code and running the Power On Self Test (POST).
1-8.5 Infrared Support
The IR connection can be used to transfer files to or from portable devices like