Manual Number: 00750-903-2
Page 4
WINCOMM8/C Manual
The following illustration shows the correlation between the DIP-switch setting and the address bits
used to determine the base address. In the example below, address 280 (Factory Default) is se-
lected as a base.
ON
OFF
1
2
3
4
5
6
7
A12
A6
Figure 1: DIP-switch Illustration
Note:
Setting the switch “On” or “Closed” corresponds to a “0” in the address, while leaving it
“Off” or “Open” corresponds to a “1”.
“PAL” Addressing
If header E11 is set to the “PAL” position, the board can be addressed at a customized location.
Using the “PAL” option will allow you to obtain COM1: - COM4: addresses, XENIX COM: ad-
dresses, or any other standard or nonstandard address configuration. Using the “PAL” feature is a
very cost-effective means of solving complex addressing problems. For more information on imple-
menting the “PAL” option, please contact Technical Support.
IRQ Selection
Each port on the WINCOMM8/C has an interrupt jumper that may have to be set prior to use. The
software you are using with the board will determine which interrupts, if any are to be used. The
DOS serial port interface software does not use interrupts, while interrupt buffer programs do. DOS
does not require the interrupt to be set, while most Multi-User Operating Systems will. Consult the
particular manual for the software that you are using to determine the proper setting.
To set the interrupt for a particular port, first select the header for the port desired. Headers E1-E8
correspond to Ports 1-8. Next select an IRQ by placing one of the jumpers on the header location
that corresponds to the IRQ number that you wish to use. Below is an example of a selected IRQ.
2 3 4 5 6 7 10 11 12 15
Figure 2: Headers E1 to E8 (IRQ15 selected)
