/usr/share/tkgate/primitives/rom.v is in tkgate-data 2.0~b10-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | module rom #(.Dout(1), .Dread(1)) (A, D, OE);
input OE;
input ${A_RANGE} A;
output ${D_RANGE} D;
reg ${D_RANGE} m${MEM_RANGE};
wire ${D_RANGE} X;
assign #Dread X = m[A];
assign #Dout D = (~OE) ? ${invD}X : ${D_BITS}'bz;
endmodule
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