Onboard Serial Ports (1, 2,3,4)
Normally, the main board’s I/O chips will occupy a certain portion of memory space. For each I/O device the computer provides an I/O address. The more devices attached the more address needed to organize the memory storage areas. If all the I/O devices were run through the same address, your devices would come to a near halt. By providing the end user with four serial ports this allows devices to run more efficiently if needed. Also the corresponding interrupt needs to be selected.
Selections of logical COM port addresses are as follows. ( 3F8/ IRQ4, 3E8/IRQ4, 2F8/IRQ3, 2E8/IRQ3)
Onboard Parallel Port
Select a logical LPT port address and corresponding interrupt for the physical parallel port
The Choice: 278H, 378, disabled
Parallel Port Mode
Two
ECP Mode Use DMA
Select a DMA channel for the port.
PWRON After PWR-Fail
This option will determine how the system will power on after a power failure.
The choice: off, on , former status
