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iopadmap: Add native support for negative-polarity output enable.

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This commit is contained in:
Marcelina Kościelnicka 2021-11-09 11:22:48 +01:00
parent 4871d8f199
commit 15b0d717ed
12 changed files with 35 additions and 43 deletions
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4
techlibs/machxo2/cells_map.v
View file

@ -30,5 +30,5 @@ module \$_DFF_P_ (input D, C, output Q); FACADE_FF #(.CEMUX("1"), .CLKMUX("CLK"
// IO- "$__" cells for the iopadmap pass.
module \$__FACADE_OUTPAD (input I, output O); FACADE_IO #(.DIR("OUTPUT")) _TECHMAP_REPLACE_ (.PAD(O), .I(I), .T(1'b0)); endmodule
module \$__FACADE_INPAD (input I, output O); FACADE_IO #(.DIR("INPUT")) _TECHMAP_REPLACE_ (.PAD(I), .O(O)); endmodule
module \$__FACADE_TOUTPAD (input I, OE, output O); FACADE_IO #(.DIR("OUTPUT")) _TECHMAP_REPLACE_ (.PAD(O), .I(I), .T(~OE)); endmodule
module \$__FACADE_TINOUTPAD (input I, OE, output O, inout B); FACADE_IO #(.DIR("BIDIR")) _TECHMAP_REPLACE_ (.PAD(B), .I(I), .O(O), .T(~OE)); endmodule
module \$__FACADE_TOUTPAD (input I, T, output O); FACADE_IO #(.DIR("OUTPUT")) _TECHMAP_REPLACE_ (.PAD(O), .I(I), .T(T)); endmodule
module \$__FACADE_TINOUTPAD (input I, T, output O, inout B); FACADE_IO #(.DIR("BIDIR")) _TECHMAP_REPLACE_ (.PAD(B), .I(I), .O(O), .T(T)); endmodule

4
techlibs/machxo2/cells_sim.v
View file

@ -207,6 +207,6 @@ module \$__FACADE_OUTPAD (input I, output O); endmodule
(* blackbox *)
module \$__FACADE_INPAD (input I, output O); endmodule
(* blackbox *)
module \$__FACADE_TOUTPAD (input I, OE, output O); endmodule
module \$__FACADE_TOUTPAD (input I, T, output O); endmodule
(* blackbox *)
module \$__FACADE_TINOUTPAD (input I, OE, output O, inout B); endmodule
module \$__FACADE_TINOUTPAD (input I, T, output O, inout B); endmodule

2
techlibs/machxo2/synth_machxo2.cc
View file

@ -185,7 +185,7 @@ struct SynthMachXO2Pass : public ScriptPass
{
if (!noiopad || help_mode)
{
run("iopadmap -bits -outpad $__FACADE_OUTPAD I:O -inpad $__FACADE_INPAD O:I -toutpad $__FACADE_TOUTPAD OE:I:O -tinoutpad $__FACADE_TINOUTPAD OE:O:I:B A:top");
run("iopadmap -bits -outpad $__FACADE_OUTPAD I:O -inpad $__FACADE_INPAD O:I -toutpad $__FACADE_TOUTPAD ~T:I:O -tinoutpad $__FACADE_TINOUTPAD ~T:O:I:B A:top");
run("attrmvcp -attr src -attr LOC t:$__FACADE_OUTPAD %x:+[O] t:$__FACADE_TOUTPAD %x:+[O] t:$__FACADE_TINOUTPAD %x:+[B]");
run("attrmvcp -attr src -attr LOC -driven t:$__FACADE_INPAD %x:+[I]");
}