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  2  0  2  0  1  1  1  2  1  0  1  1  2  0  2  1  0  1  1  1  1  0  2  1  1  1  0  1  1  1  0  1  1  1  2  1  1  2  1  2  0  1  2  1  2  2  2  1  1  1  1  1  1  1
 0  2  0  6  0  6  0  6  0  6  0  6  6  4  0  6  2  0  4  6  2  0  6  4  6  0  6  2  6  2  6  4  2  6  0  2  4  0  6  2  6  6  2  2  0  0  6  2  6  2  2  0  2  2  6  6  2  6  2  4  6  2  6  6  0  2  2  6  6  4  4  0  6  0  0  0  6  6  0  0
 0  0  4  0  0  0  0  0  0  0  0  0  0  4  4  0  0  0  0  0  0  4  0  4  4  0  4  0  0  4  0  4  4  0  4  4  0  0  4  0  4  0  0  0  4  4  4  4  4  0  4  0  4  4  0  0  0  4  4  0  4  0  4  4  0  4  4  0  4  0  0  0  4  0  0  0  0  4  0  0
 0  0  0  4  0  0  0  0  0  0  0  0  4  0  0  0  4  0  0  0  0  0  4  0  4  4  4  4  0  4  4  0  4  0  4  0  4  0  4  4  4  0  4  4  4  4  4  0  4  0  0  4  0  4  4  0  0  0  4  4  0  0  0  0  4  4  0  4  4  4  0  4  4  4  0  0  4  0  0  0
 0  0  0  0  4  0  0  0  0  0  0  0  0  0  4  0  0  0  0  0  0  0  0  4  0  4  4  4  4  0  0  0  0  4  4  4  4  4  0  0  0  4  4  4  4  0  4  0  4  4  4  0  0  0  4  0  4  0  4  4  4  0  4  4  0  4  4  0  0  0  0  4  4  0  4  4  4  0  0  0
 0  0  0  0  0  4  0  0  0  0  0  0  4  0  0  4  0  0  0  4  4  0  0  0  4  0  0  4  0  4  4  0  0  4  4  0  0  4  4  4  0  0  4  0  4  0  4  0  0  4  0  4  4  4  0  4  4  4  4  0  0  0  4  0  0  4  4  0  0  0  4  4  4  0  4  4  4  0  0  0
 0  0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  4  4  4  4  0  0  4  0  0  0  0  4  0  4  4  0  4  4  0  0  4  4  0  4  4  4  0  4  4  0  0  4  4  0  4  4  4  0  0  4  0  4  0  0  4  4  4  4  4  0  0  0  0  0  0
 0  0  0  0  0  0  0  4  0  0  0  4  0  0  0  4  0  4  4  0  4  4  0  4  4  4  0  4  0  4  0  0  4  0  0  0  4  4  0  0  4  0  4  0  4  4  0  0  4  4  0  0  0  4  0  4  4  0  0  4  4  0  4  4  4  4  4  0  0  0  4  4  0  0  0  0  4  0  0  0
 0  0  0  0  0  0  0  0  4  0  0  0  0  0  4  0  0  4  0  4  4  4  4  0  4  4  0  4  4  0  4  0  0  4  0  0  0  4  0  4  0  4  0  4  0  0  4  4  4  0  0  0  0  0  4  4  4  4  0  0  0  4  4  4  4  0  0  0  4  0  0  4  0  4  0  4  0  0  0  0
 0  0  0  0  0  0  0  0  0  4  0  4  0  0  0  0  4  4  4  4  4  0  4  0  0  4  0  0  4  4  4  4  0  4  0  4  4  4  4  0  4  0  4  0  4  0  4  0  0  4  4  4  0  4  4  0  0  0  4  0  0  0  4  4  0  0  0  4  0  0  4  0  0  0  4  0  0  4  0  0
 0  0  0  0  0  0  0  0  0  0  4  0  0  4  4  4  4  4  4  4  0  4  0  0  0  4  0  4  0  4  0  0  0  4  0  4  4  0  4  0  0  4  0  0  0  4  0  4  0  0  0  0  4  0  4  4  0  0  4  4  4  4  4  0  0  4  4  0  0  0  4  0  4  4  4  0  0  4  0  0

generates a code of length 80 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+87x^64+38x^66+292x^68+180x^70+24x^71+658x^72+184x^73+520x^74+640x^75+998x^76+1344x^77+782x^78+1904x^79+1115x^80+1904x^81+838x^82+1344x^83+995x^84+640x^85+480x^86+184x^87+581x^88+24x^89+204x^90+236x^92+30x^94+109x^96+36x^100+9x^104+2x^108+1x^116

The gray image is a code over GF(2) with n=320, k=14 and d=128.
This code was found by Heurico 1.16 in 24.3 seconds.