Measurement Computing CIO-PDMAxx - Manual (Page 8)

3.3 WAIT STATE JUMPER
The CIO-PDMA16 board has a wait state jumper (Figure 3-3) which can enable an
on-board wait-state generator. A wait state is an extra delay injected into the
processor's clock via the bus. This delay slows the processor slightly so that signals
from slow devices (chips) will be valid. The default position is Disabled. Only rarely,
and then only if processing fast signals, might the Enabled position be required.
NOTE: The wait state generator on the CIO-PDMA16 is only active when the board
is being accessed. In general, your PC will not be slowed down by using the wait
state.
Figure 3-3. Wait State Jumper Positions
3.4 INSTALLING THE CIO-PDMA BOARD
1. Shut the computer down, remove power, and open the case.
2. Locate an empty ISA expansion slot in your computer. The CIO-PDMA32 board
requires a 16-bit slot (with two connectors), while the CIO-PDMA16 can be
installed in either an 8-bit or a 16-bit slot.
3. Push the board firmly down into the expansion bus connector. If it is not seated
fully it may fail to work and could short circuit the PC bus power onto a PC bus
signal. This could damage the motherboard in your PC as well as the
CIO-PDMA board. Use the screw provided on your computer's backplate to
secure the board in it's location.
4. Replace the cover on the computer and turn it ON.
5. To verify proper installation, you should now run InstaCal and select the Test
function.
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