Impulse 3088 - Manual (Page 5)

Card Setup
Sealevel Systems DUOCOM: Page 2
Card Setup
The DUOCOM: contains several jumper straps which must be set for proper
operation.
Address Selection
Each serial port on the DUOCOM: occupies eight consecutive I/O locations,
and looks to the PC as a standard serial port. A DIP switch (SW1) is used to set
the port address options for the DUOCOM:. Be careful when selecting the port
addresses as some selections may conflict with existing ports. The following
table shows the addressing options available with the standard PAL. If you do
not see an address option that suits your needs, please contact Sealevel Systems
Technical Support about a custom PAL option.
Port1
J2
Port2
J3
SW1
1
SW1
2
SW1
3
SW1
4
3F8 2F8 On On On Off
3E8 2E8 On On Off On
2F8 2E8 On On Off Off
2F8 3E8 On Off On On
3220 3228 On Off On Off
4220 4228 On Off Off On
5220 5228 On Off Off Off
5220
4220 Off On On On
280 290 Off On On Off
300 308 Off On Off On
310 318 Off On Off Off
280 288 Off Off On On
290 298 Off Off On Off
300 280 Off Off Off On
Disabled Disabled Off Off Off Off
Figure 1 - Address Selection Table
Note: Each COM: port in your system should have a unique address. Typically
COM1: - COM4: addresses are 3F8, 2F8, 3E8 & 2E8 Hex. If a COM1: &
COM2: are already present, use the second addressing option, this will
provide the typical addresses for COM3: & COM4: .
Refer to Appendix A for common address contentions.