The generator matrix

 1  0  1  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  0  1  1  6  1  1  4  1  1  2  1  1  4  1  1  2  1  1  1  1  1  1  1  1  4  2  4  2  2  2  2  0  2  0  2  2  0  2  2  2  2  2  2  1  1  1  1  0  4  0  2  2  4  1  1  1  4  1  1
 0  1  3  6  5  1  0  3  1  6  5  1  0  3  1  6  5  1  0  3  1  6  5  1  4  7  1  2  1  1  4  7  1  2  1  1  4  2  4  2  7  1  7  1  1  1  1  1  0  6  0  2  6  2  0  6  2  4  4  4  2  2  2  0  6  3  5  1  1  1  0  6  1  6  5  6  2  2  6
 0  0  4  0  4  0  4  0  4  4  0  4  0  0  0  4  0  0  4  4  4  0  4  4  4  4  4  4  4  4  0  0  0  0  0  0  4  4  0  0  4  4  0  0  4  4  0  0  0  4  4  4  0  4  4  4  0  4  4  0  4  4  0  0  0  0  0  0  4  4  0  0  0  0  4  4  0  4  0
 0  0  0  4  4  4  4  0  0  0  4  4  4  4  4  4  0  0  0  4  4  0  0  0  0  0  0  4  4  4  4  4  4  0  0  0  4  0  0  4  4  0  0  4  4  0  0  4  4  4  0  4  4  0  4  0  4  0  4  4  0  4  4  0  0  0  0  4  0  4  0  0  0  4  4  0  0  4  4

generates a code of length 79 over Z8 who´s minimum homogenous weight is 77.

Homogenous weight enumerator: w(x)=1x^0+96x^77+18x^78+42x^79+25x^80+32x^81+14x^82+12x^83+6x^84+6x^85+2x^87+2x^93

The gray image is a code over GF(2) with n=316, k=8 and d=154.
This code was found by Heurico 1.16 in 0.181 seconds.