System Overview 1-15Peripheral ControllerThe advanced integrated peripheral controller supports two serial ports, two universalserial bus ports, one parallel port, diskette drive, PS/2-compatible keyboard and mouse,and integrated Real Time Clock (RTC). The system provides the connector interface foreach port.Serial PortsBoth serial ports are relocatable. Each serial port can be set to one of four differentCOM ports and can be enabled separately. When enabled, each port can beprogrammed to generate edge or level sensitive interrupts. When disabled, serial portinterrupts are available to add-in boards.Parallel PortOne IEEE 1284-compatible 25-pin bidirectional EPP (supporting levels 1.7 and 1.9)parallel port is provided. BIOS programming enables the parallel port and determinesthe port address and interrupt. ECP mode is supported with 2 possible DMA channels.When disabled, the interrupt is available to add-in boards.External Device ConnectorsThe external I/O connectors provide support for a PS/2 compatible mouse and akeyboard, for a SVGA monitor, 2 serial port connectors, a parallel port connector, LANport, and two USB connections.
