PCL-818 Series User Manual 44
Appendix C Register Structure & Format
C.1 Overview
The PCL-818HD/HG/L is delivered with an easy-to-use 32-bit Device
Drivers for user programming under the Windows 95/98/NT/2000/ME/
XP operating system. We advise users to program the PCL-818HD/HG/L
using the 32-bit Device Drivers provided by Advantech to avoid the com-
plexity of low-level registry programming.
The most important consideration in programming the PCL-818HD/HG/
L the register level is to understand the function of the card's registers.
The information in the following sections is provided only for users who
would like to do their own low-level programming.
C.2 I/O Port Address Map
The PCL-818HD/HG/L requires 32 consecutive addresses in the PC's I/O
space. The address of each register is specified as an offset from the card's
base address. For example, BASE+0 is the card's base address and
BASE+7 is the base address plus seven bytes.
Table C-1 shows the function of each register of the PCL-818HD/HG/L
or driver and its address relative to the card's base address.
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