National Instruments PXITM 用户手册
Chapter 4
PCMCIA Serial Hardware Installation, Verification, and Configuration
4-22
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Resource Settings
The following sections explain the resource configuration options for each
serial interface.
serial interface.
PCMCIA-232, PCMCIA-485, PCMCIA-232/4
Figure 4-12 shows the resource configuration dialog box for a
PCMCIA-485. The PCMCIA-232 and PCMCIA-232/4 dialog boxes
are similar.
PCMCIA-485. The PCMCIA-232 and PCMCIA-232/4 dialog boxes
are similar.
Figure 4-12. Resource Configuration Dialog Box for the PCMCIA-485
Base I/O Address:
The base I/O address assigned to the port.
IRQ:
The IRQ assigned to the port.
Length:
The size (in bytes) of the I/O window.
For the PCMCIA-232 and PCMCIA-485, the
length is 8 (the size of the I/O window for one
port).
length is 8 (the size of the I/O window for one
port).
For the PCMCIA-232/4, the length is 32 bytes
(the size of the I/O window for four ports).
(the size of the I/O window for four ports).