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Motherboard Description
1-6.9 Real-Time Clock
The real-time clock supports 256 bytes of battery-backed CMOS SRAM.
Hardware implementation to indicate century rollover.
1-7 I/O INTERFACE CONTROLLER
The motherboard uses the ITE IT8712F-A I/O controller which features:
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Single diskette drive interface
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Two serial ports
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FIFO supports on both serial and diskette interfaces
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One parallel port with Extended Capabilities Port (ECP) and
Enhanced Parallel Port (EPP) support
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PS/2 style mouse and keyboard interfaces
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PCI PME interface
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Intelligent auto power management, including:
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Shadowed write-only registers for ACPI compliance
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Programmable wake-up event interface
The Setup program provides configuration option for the I/O controller.
1-7.1
Serial Ports
The motherboard has one 9-pin D-Sub serial port connector located on the
back panel. The NS16C5450-compatible UARTs support data transfers at
speeds up to 115.2 Kbits/sec with BIOS support.
1-7.2
Parallel Port
The connector for the multimode bi-directional parallel port is a 25-pin D-
Sub connector located on the back panel of the motherboard. In the Setup
program, there are four options for parallel port operation:
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Compatible (standard mode)
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Bi-directional (PS/2 compatible)
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Bi-directional EPP. A driver from the peripheral manufacturer is
required for operation. See Section 6.2 for EPP compatibility.
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Bi-directional high-speed ECP
1-7.3
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
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SY-7ISA
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