Don Wooton

In file op-0.11.0/progP16.c line 5555 (and probably also in opgui) dim+=dim%8 // grow to 8 word multiple does not round up. This should be if(dim&0x07U) dim+=8-(dim%8); Once that is fixed, you will notice that the line just above for(;dim>0&&memCODE_W[dim]>=0x3fff;dim--); //skip empty space at end has a one off error. It should be memCODE_W[dim-1] The combination of errors only presents itself when the code you are trying to program is an even 8 bytes long. In that case it trims one byte that does...