Справочник Пользователя для National Instruments PCI-DIO-96
Chapter 6
Programming
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National Instruments Corporation
6-11
PCI-DIO-96 User Manual
Figure 6-2 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 from port C.
to configure port B for input in mode 1. Notice that port B does not have
extra input or output lines from port C.
Figure 6-2. Control Word to Configure Port B for Mode 1 Input
During a mode 1 data read transfer, read port C to obtain the status of
the handshaking lines and interrupt signals. See the Port C Status-Word
Bit Definitions for Input (Ports A and B), Port C Status-Word Bit
Definitions for Output (Ports A and B), and Port C Status-Word Bit
Definitions for Bidirectional Data Path (Port A Only) sections later in
this manual for detailed definitions.
the handshaking lines and interrupt signals. See the Port C Status-Word
Bit Definitions for Input (Ports A and B), Port C Status-Word Bit
Definitions for Output (Ports A and B), and Port C Status-Word Bit
Definitions for Bidirectional Data Path (Port A Only) sections later in
this manual for detailed definitions.
D7
D6
D5
D4
D3
D2
D1
D0
1
X
X
X
X
1
X
1