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

generates a code of length 64 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+44x^56+52x^57+75x^58+90x^59+101x^60+174x^61+193x^62+218x^63+240x^64+204x^65+174x^66+156x^67+87x^68+64x^69+46x^70+36x^71+22x^72+16x^73+22x^74+10x^75+11x^76+2x^77+1x^78+2x^79+5x^80+1x^84+1x^106

The gray image is a code over GF(2) with n=256, k=11 and d=112.
This code was found by Heurico 1.16 in 0.352 seconds.