The generator matrix

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

generates a code of length 84 over Z8 who´s minimum homogenous weight is 77.

Homogenous weight enumerator: w(x)=1x^0+90x^77+186x^78+354x^79+318x^80+452x^81+335x^82+398x^83+298x^84+332x^85+226x^86+244x^87+187x^88+192x^89+111x^90+102x^91+67x^92+76x^93+31x^94+54x^95+18x^96+8x^97+6x^98+7x^100+2x^101+1x^102

The gray image is a code over GF(2) with n=336, k=12 and d=154.
This code was found by Heurico 1.16 in 1.01 seconds.