User manual

23 Chapter 3
Base Address Selection (SW1)
You control the PCL-818HD/HG/L's operation by reading or writing data
to the PC's I/O (input/output) port addresses. The PCL-818HD/HG/L
requires 32 consecutive address locations with the FIFO buffer enabled or
16 locations with the FIFO disabled.
Switch SW1 sets the card's base (beginning) address. Valid base
addresses range from Hex 000 to Hex 3F0. Other devices in your system
may, however, be using some of these addresses.
We set the PCL-818HD/HG/L for a base address of Hex 300 at the fac-
tory. If you need to adjust it to some other address range, set switch SW1
as shown in the following table:
Switch 1 2 3 4 5 6
Line A9 A8 A7 A6 A5 A4
Note: Switches 1-6 control the PC bus address lines as
follows: