diff options
Diffstat (limited to 'techlibs/common/simcells.v')
| -rw-r--r-- | techlibs/common/simcells.v | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/techlibs/common/simcells.v b/techlibs/common/simcells.v index e770c5453..937512e7c 100644 --- a/techlibs/common/simcells.v +++ b/techlibs/common/simcells.v @@ -175,6 +175,44 @@ endmodule // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| //- +//- $_ANDNOT_ (A, B, Y) +//- +//- A 2-input AND-NOT gate. +//- +//- Truth table: A B | Y +//- -----+--- +//- 0 0 | 0 +//- 0 1 | 0 +//- 1 0 | 1 +//- 1 1 | 0 +//- +module \$_ANDNOT_ (A, B, Y); +input A, B; +output Y; +assign Y = A & (~B); +endmodule + +// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| +//- +//- $_ORNOT_ (A, B, Y) +//- +//- A 2-input OR-NOT gate. +//- +//- Truth table: A B | Y +//- -----+--- +//- 0 0 | 1 +//- 0 1 | 0 +//- 1 0 | 1 +//- 1 1 | 1 +//- +module \$_ORNOT_ (A, B, Y); +input A, B; +output Y; +assign Y = A | (~B); +endmodule + +// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| +//- //- $_MUX_ (A, B, S, Y) //- //- A 2-input MUX gate. |