line 73 of apf_top.v is
```
// GBA [7] PHI#
// GBA [6] WR#
// GBA [5] RD#
// GBA [4] CS1#/CS#
//     [3:0] unwired
inout   wire    [7:4]   cart_tran_bank0,
output  wire            cart_tran_bank0_dir,
```