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Re: chipscope problem
i had phenomenas like this in the past, look like your system is instable.
are you debugging a cpu code right now, or anything that can distrupt your jtag connection ?
its the only one to be marked after that you must do the update bitsream command.
the program start address is when defaul linkerscript is marked.
you can also add stach, heap size but this is the most important.
edk gdb debug options
your first problem was probebly due to jtag chain.
for your current problem :
1. have you put the start address - normally you put 0x100 - don't let field to be empty !.
2. also of course you should mark the booloop for bram initialisation <green>, and your application...
Re: VHDL code
you can do it by :
1. preparing ROM for the calculation with all values defined.
2. in xilinx you can use CORDIC core for generating this function.
3. if your input is more limited to specific values, you can even use a decoder to
decode the values.
however software design is much much faster then hardware. the main reason are :
a. software code is more common (open sources, libraries ). that means it is very easy to take software packages or libraries and integrate them.
b. software languages are more advanced - c, c++ jawa to hw...
Re: Assert or Deassert Reset
i agree with vsmguy : this kind of question is to filter which one really has experience with design then one that has not.
what he actually expect from you is to clarify, or developp the issue further more, thus you generate an interaction, which is most importent...
if ignoring the skew isues :
i think what he really wanted you to say is that you will use 2 bit bus as output with the 50khz clock, i.e to demux the data1 input !
so you use the clock2 as selector to 1:2 demux device that select the data1 input !!!
best regards !
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