The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  8  1  1  1  1  1  1  1  1  1  1  0  2  1  1  8  0  4
 0  2  0  6  8  6  8  2  0 14  8  2  0  6  8 10 14  8  8  2  6  0  0 10  8 14  8 14  8 10  8 10  4  6 12  2  4  6  4  2  4 10 10 12  4 14 14 12 12 12  6  6  6  6  4  4  4 12  4  4 10 10  8 10 10  0  4  0  0  0  0  0 12  2 14  2 14  2  4  2
 0  0 12  0  0  4 12  4  8  8  4 12  8 12  4  8  8  0  4  4 12 12  0  8  8  0  8  4  4 12 12  0  4  0 12  0  0  4  8 12  0  4  8 12  4  8 12  0  0  8  0  8 12  4  8 12 12  8  4  4  4  8  0 12  0  8 12  8  4 12 12  4 12  0  4  0  4  0  4 12
 0  0  0 12  4 12  4  0  8  4 12  8 12  4  8  8 12 12  0  8 12 12  8  0  4  4  0  4  4  0  8  8  0  0 12 12  4  8  8 12 12 12 12  8 12  0  8  0  8  0  8  8  0  0  4  4  0 12  8  4  4  4  0  4  4  0  8  4  4  8  4  8  0  0  0  4  0 12  4  8

generates a code of length 80 over Z16 who´s minimum homogenous weight is 76.

Homogenous weight enumerator: w(x)=1x^0+157x^76+104x^77+368x^78+320x^79+374x^80+236x^81+156x^82+76x^83+146x^84+28x^85+68x^86+4x^87+9x^88+1x^148

The gray image is a code over GF(2) with n=640, k=11 and d=304.
This code was found by Heurico 1.16 in 3.51 seconds.