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  X  1  0  1  1  X  0  X  X  X  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  X  2  X  X  X  X  0  X  X
 0  X  0  X  0  0 X+2 X+2  0  0  X X+2  0  0 X+2  X  0  0  X  X  0  0 X+2 X+2  0  X  0 X+2  0  2  0  2 X+2  X  2  2  2  2  2  2  X  2 X+2  2 X+2  2  X  2  X  2 X+2  2 X+2  2  X  2 X+2  2 X+2  2  X  2  X  2  X  2 X+2  2 X+2  2  X  X  X X+2  X  2  0  X X+2  0
 0  0  X  X  0 X+2 X+2  0  0 X+2  X  0  0  X X+2  0  2 X+2 X+2  2  2  X  X  2  2 X+2 X+2  2  2  X  X  X  X  2  X  X  2  2  0  2  X  X  0  2  X X+2  2  2 X+2  X  0  0  X X+2  2  2 X+2  X  2 X+2  0  0  X  0 X+2  0 X+2  X  2 X+2  0  X  X X+2 X+2  X  X  0  0  0
 0  0  0  2  0  0  2  0  2  2  0  2  2  2  0  2  2  0  2  0  2  0  2  0  0  0  2  2  0  2  2  2  0  2  0  0  0  2  2  0  0  0  2  2  2  2  0  0  2  0  0  2  0  2  2  2  0  2  2  0  0  0  2  2  0  0  2  2  0  0  2  0  2  2  2  0  2  0  2  0
 0  0  0  0  2  2  2  2  2  2  0  2  0  0  2  0  0  0  0  0  2  2  2  2  2  0  0  2  0  2  2  0  2  0  2  0  2  2  2  0  2  0  0  2  0  2  2  2  2  2  0  0  0  0  2  0  0  2  0  0  2  2  2  2  2  0  0  0  0  2  2  0  0  0  2  0  0  0  0  0

generates a code of length 80 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 76.

Homogenous weight enumerator: w(x)=1x^0+56x^76+146x^78+132x^80+100x^82+60x^84+10x^86+6x^88+1x^128

The gray image is a code over GF(2) with n=320, k=9 and d=152.
This code was found by Heurico 1.16 in 0.364 seconds.