Filter
Top Products
Chapter 4 Register-Level Programming
© National Instruments Corporation 4-29 Lab-NB User Manual
Digital Control Register
The Digital Control Register can be used to configure port A, port B, and port C as inputs or
outputs as well as selecting simple mode (basic I/O) or handshaking mode (strobed I/O) for
transfers. See Programming the Digital I/O Circuitry later in this chapter for a description of the
individual bits in the Digital Control Register.
Address: Slot starting address + 5 0030 (hex)
Type: Read-and-write
Word Size: 8-bit
Bit Map:
76543210
CW7 CW6 CW5 CW4 CW3 CW2 CW1 CW0
Bit Name Description
7–0 CW<7..0> Control Word Bit—8-bit control word.