Cypress DCT-1D Betriebsanweisung PDF herunterladen (Seite 81)

Appendix C

Tips & Trix

In this appendix we have collected a number of tips and trix that you might ﬁnd useful.

• If you encounter some weird problems with the hardware you can try to turn the power

off to the FPGA system before conﬁguring i t. We have had some problems with the

FPGA board which can be solved in this manner.

• You do not have to restart Modelsim or recompile all ﬁles to get new changes included in

the simulation. Just r ecompile the ﬁle you changed and type restart -f in Modelsim.

Now your new changes is included.

• If you use emacs you can compile your Verilog ﬁle from emacs.

M-x compile

vlog -work {work directory} +incdir+{include directory} {file}

• To log more signals than you want to display in the wave window you can use the log

command.

To log all signals under e.g. dafk_tb/dafk_top/cpu you can use

log -r dafk_tb/dafk_top/cpu/* .

• To make backspace work in µClinux when using Teraterm. Under Setup->Keyboard...

make sure that the check box for how the backspace key is sent is set.

• If you haven’t setup the backspace key to work correctly in µClinux, you can still use

some other standard unix key combinations: control-w will erase the previous word.

control-u will erase the entire line.

• If you ﬁnd it hard to see if a signal is a 1 or a 0 in modelsim when many 1 bit signals are

next to each other in the wave window you might want to change the colors for 1 and 0

respectively. This can be done by using Tools -> Edit preferences.. menu selection on

the modelsim main window. In the window that opens up, select WaveWindows.

• If you use verilog-mode in emacs, you can press control-c control-d to go to another

module. (The default module name is taken from the location of the cursor in the buffer.)

• If you use the command show_dafk_window in modelsim you will get a window that

allows you to add a number of different signals to your modelsim window. You can look

at the ﬁle modelsim.tcl in the simulator directory to see how this is implemented.

You may also press the button named Show dafk window in the wave window to open

this window (the button is only visible if the wave window is removed from the main

modelsim window).

• If you use some of the virtual signals declared by us, make sure to use the restart script

restart-f.do instead of restarting Modelsim the normal way.

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Cypress DCT-1D Betriebsanweisung Seite 81