Register Maps - Keithley PIO-32 User Manual

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Register Maps

Address maps are provided here only for background reference
Note:
purposes. You do not program registers directly in Windows 95/98/NT.
Instead, you program register changes through the application
programming interface (API) of DriverLINX, which is provided on the
CD-ROM that comes with your board. Refer to the DriverLINX
documentation that is installed on your system. (If it is not yet installed,
you can find it on the CD-ROM in the X:\DrvLINX4\Docs and
X:\DrvLINX4\Docs\Notes folders, where X is the drive letter of the
CD-ROM drive.)
The PIO-32 Series boards contain four 8-bit registers. To maintain
compatibility with the PIO-12 products, which use an 8255
Programmable Peripheral Interface integrated circuit, the four registers
are at base addresses +0h, +1h, +4h, and +5h. Base addresses +2h, +3h,
+6, and +7h are not used. Reads or writes to these locations are ignored;
the ports are not software configurable.
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