Figure B-5. Control Word To Configure Port B For Mode 1 Input - National Instruments PCI-DIO-96 User Manual

Appendix B Register-Level Programming — Programming
Figure B-5 shows the control word written to the Configuration Register to configure port B
for input in mode 1. Notice that port B does not have extra input or output lines left from
port C when ports A and B are both enabled for handshaking.
During a mode 1 data read transfer, read port C to obtain the status of the handshaking lines
and interrupt signals. Refer to the
and B) section, the
and the Port C Status-Word Bit Definitions for Bidirectional Data Path (Port A Only)
for detailed definitions.
PCI-DIO-96/PXI-6508/PCI-6503 User Manual
D7 D6 D5
1 X X

Figure B-5. Control Word to Configure Port B for Mode 1 Input

Port C Status-Word Bit Definitions for Input (Ports A
Port C Status-Word Bit Definitions for Output (Ports A and B)
D4 D3 D2 D1
X X 1
B-20
D0
1 X
section,
section
ni.com