mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-08-07 11:41:23 +00:00
Code Activity

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

Browse source
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
Download patch file Download diff file Expand all files Collapse all files

8
techlibs/gowin/cells_map.v
View file

@ -122,14 +122,6 @@ module \$_DFFE_NP0P_ (input D, C, R, E, output Q);
wire _TECHMAP_REMOVEINIT_Q_ = 1;
endmodule
module \$__GW_IOBUF (input I, OE, output O, inout IO);
IOBUF _TECHMAP_REPLACE_ (.I(I), .O(O), .OEN(~OE), .IO(IO));
endmodule
module \$__GW_TBUF (input I, OE, output O);
TBUF _TECHMAP_REPLACE_ (.I(I), .OEN(~OE), .O(O));
endmodule
module \$lut (A, Y);
parameter WIDTH = 0;
parameter LUT = 0;

2
techlibs/gowin/synth_gowin.cc
View file

@ -240,7 +240,7 @@ struct SynthGowinPass : public ScriptPass
run("abc -dff -D 1", "(only if -retime)");
if (!noiopads || help_mode)
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O "
"-toutpad $__GW_TBUF OE:I:O -tinoutpad $__GW_IOBUF OE:O:I:IO", "(unless -noiopads)");
"-toutpad TBUF ~OEN:I:O -tinoutpad IOBUF ~OEN:O:I:IO", "(unless -noiopads)");
}
if (check_label("map_ffs"))