쵸코아몬드의 블로그

When you are using Xilinx SDK, you have to distinguish pointer and array. If you declare a variable as a pointer, you have to use it as a pointer not array. If a pointer is used as array, synchoronous interrupt handler(exception) may occur.

volatile unsigned int* mem;

for(i=0; i<SIZE; i++){
	mem[i] = i; //Synchoronous Interrupt Handler(exception) may occur
    //you have to use like this
    //*(mem+i) = i;
}

Bash if statement can be used with regular expression

if [[ "hello world" =~ "hello" ]] ## this is true
then
    echo "'hello world' has 'hello'"
fi

if [[ "hello" =~ "hello world" ]] ## this is false
then
    echo "'hello' has 'hello world'"
fi

if [[ "hello world" =~ e.* ]] ## this is true
then
    echo "'hello world' has 'e' followed by any character"
fi

Note that

 - the bracket should be double

 - use "=~", not "~="

 - use the regular expression without quotation mark

 - the lefthand-side should be a container

When you are using very large concatenated signals in Vivado simulation, it may cause elaborate step failure. You can release this problem with breaking into several smaller signals.

AR# 62969 says it may be fixed in 2015.1 version, however, it still exists in 2017.2 version

www.xilinx.com/support/answers/62969.html