ChipScope for ISE 6.1

[Tobias Möglich]

Hello

My Question:
Is it also possible to watch signals which are connected directly to
IOBs in chipscope ?
It seems to me that they are not available in the "ChipScope Analyser".
Only internal signals are available (register imputs and outputs)
Is that right? Or is it a mistake of mine. Yet I couldn't manage to
display signals which come directly from a IO pad.

Tobias

 

[Gabor Szakacs]

Tobias Möglich <Tobias.Moeglich@gmx.net> wrote in message news:<40332808.11471D5C@gmx.net>...

Hello

My Question:
Is it also possible to watch signals which are connected directly to
IOBs in chipscope ?
Not directly...
It seems to me that they are not available in the "ChipScope Analyser".
Only internal signals are available (register imputs and outputs)
Is that right? Or is it a mistake of mine. Yet I couldn't manage to
display signals which come directly from a IO pad.
ChipScope uses internal blockRAM, so it needs signals available to

the chip internals. To look at signals within an IOB that are not
already brought into the internals is not possible. You can, however
look at buffered copies of input signals for example by placing an
IBUF or IFD to bring the signal into the chip. If you really want
to look at the pad itself, you'll need an external analyser.

Tobias