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PCM-3780 User Manual 32
Appendix C Register Structure & Format
C.1 Overview
PCM-3780 is delivered with an easy-to-use 32-bit DLL driver for user
programming under the Windows 2000/XP operating system. We advise
users to program the PCM-3780 using the 32-bit DLL driver provided by
Advantech to avoid the complexity of low-level programming by register.
The most important consideration in programming the PCM-3780 at reg-
ister level is to understand the function of the card's registers. The infor-
mation 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 PCM-3780 requires 64 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+6 is
the base address plus six bytes.
Table C-1 shows the function of each register of the PCM-3780 or driver
and its address relative to the card's base address.