Measurement Computing PC104-DO48H - Manual (Page 6)

2.0 SOFTWARE INSTALLATION
The board has a variety of switches and jumpers to set before installing the board in
your computer. By far the simplest way to configure your board is to use the
InstaCal
TM program provided as part of your software package. InstaCal TM will show
you all available options, how to configure the various switches and jumpers (as
applicable) to match your application requirements, and will create a configuration
file that your application software (and the Universal Library) will refer to so the
software you use will automatically know the exact configuration of the board.
Please refer to the Extended Software Installation Manual regarding the installation
and operation of InstaCal
TM . The following hard copy information is provided as a
matter of completeness, and will allow you to set the hardware configuration of the
board if you do not have immediate access to InstaCal
TM and/or your computer.
3.0 HARDWARE SETUP
Open your PC (after turning off the power) and install the board. Leave the switches
as they were set at the factory or refer to the information below to change the settings.
After the board is installed and the computer is closed up, turn the power back on.
3.1 BASE ADDRESS
The PC104-DO48H employs the PC bus for power, communications and data transfer.
As such it draws power from the PC, monitors the address lines and control signals
and responds to it's I/O address, and it receives and places data on the data lines.
The BASE address is the most important user selectable bus related feature of the
PC104-DO48H. The base address is the location that software writes to and reads
from when communicating with the PC104-DO48H.
The base address switch is the means for setting the base address. Each switch
position corresponds to one of the PC bus address lines. By placing the switch down,
the PC104-DO48H address decode logic is programmed to respond to that address bit.
A complete address is constructed by setting the HEX or decimal number which the
PC104-DO48H will respond to. In the example shown, switches 1 and 2
are DOWN, all others are UP.
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