Acer Altos 500 Altos 500 Service Guide - Page 72

Onboard Peripherals The Onboard Peripheral Configuration allows you to configure the onboard communication ports and the onboard devices. Selecting this option displays the following screen: Onboard Peripherals Serial Port 1 Enabled ] Base Address 3F8h] IRQ 4] Serial Port 2 Enabled ] Base Address 2F8h] IRQ 3] Parallel Port Enabled ] Base Address 378h] IRQ 7] Operation Mode Standard] ECP DMA Channel • Onboard Device Settings Serial Ports 1 and 2 These parameters allow you to enable or disable serial ports 1 and 2. Base Address This function lets you set a logical base address for serial ports 1 and 2. The options are: • 3F8h • 2F8h • 3E8h • 2E8h IRQ This function lets you assign an interrupt for serial ports 1 and 2. The options for serial ports 1 are IRQ 4 and 11. The options for serial port 2 are IRQ 3 and 10. 3-16 Altos 500 System Guide