ASIC/FPGA Design and Verification Out Source Services
Run a perl script from vim on a specified text block and convert binary word to hex.
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This pages is another example, to many other ones discussed in
this site,
on how it is easy to start a perl script from vim to do some text manipulations.
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In this case there are a few binary words that first need to be concatenated to form a single binary word.
Next the large word is chopped to 16 bits and converted to hex.
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The input format was taken from VHDL code:
0111100
0111100
0111100
0111100
0111100
0111100
0111100
0111100
01111000
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The output format was taken from specman e code:
0x7878F1E3 0xC78F1e3C
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The output format from script looks like:
0111100001111000 -> 7878
1111000111100011 -> F1E3
1100011110001111 -> C78F
0001111000111100 -> 1E3C
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The script is shown below:
#!/bin/perl
$buf="";
while (<STDIN>) {
chomp($_);
$buf=$_ . $buf;
}#while
#convert to hex and print
$l=length($buf);
if($l > 16) {
$j=0;
for($i = 0; $i < $l; $i += 16) {
$b=substr($buf, $i, 16);
$hex = sprintf('%X', oct("0b$b"));
print("$b -> $hex\n");
$j++;
}
} else {
$hex = sprintf('%X', oct("0b$buf"));
print("$buf -> $hex\n");
}
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You may find this page interesting if you have to
enumerate a large number of VHDL constants:
vhdl enumerate perl script
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