ADLINK ACL-6128A - Manual (Page 27)

Low-Level Programming • 19
3
Low-Level Programming
This chapter describes low-level programming of the ACL-6128A and details
the register format and control procedures. To write applications based on
primitive I/O functions (inportb and outportb) instead of using the ACL-6128A
library, be careful to fully understand the register structure.
3.1 I/O Port Address Map
The ACL-6128A requires only 4 consecutive addresses in the PC I/O address
space. The following table (Table 3.1) shows the location of each register and
driver relative to the base address.
Location Write Read
Base + 0 CH1 High Byte Data Not Used
Base + 1 CH1 Low Byte Data Not Used
Base + 2 CH2 High Byte Data Not Used
Base + 3 CH2 Low Byte Data Not Used
Table 3.1 I/O Register Map