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removed outdated b-signals in controller

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Kevin Kim 2023-03-03 08:45:42 -08:00
parent 9cad890c1a
commit 422b428cba
1 changed files with 0 additions and 16 deletions
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src/ieu/controller.sv
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@ -109,8 +109,6 @@ module controller(
logic [`CTRLW-1:0] ControlsD; // Main Instruction Decoder control signals
logic SubArithD; // TRUE for R-type subtracts and sra, slt, sltu or B-type ext clr, andn, orn, xnor
logic subD, sraD, sltD, sltuD; // Indicates if is one of these instructions
logic bclrD, bextD; // Indicates if is one of these instructions
logic andnD, ornD, xnorD; // Indicates if is one of these instructions
logic maxE, maxuE, minE, minuE; // Indicates if is one of these instructions in Execute Stage
logic BranchTakenE; // Branch is taken
logic eqE, ltE; // Comparator outputs
@ -222,27 +220,13 @@ module controller(
assign sltD = (Funct3D == 3'b010);
end
if (`ZBS_SUPPORTED) begin
assign bclrD = (ALUSelectD == 3'b111 & BSelectD[0]);
assign bextD = (ALUSelectD == 3'b101 & BSelectD[0]);
end else begin
assign bclrD = 1'b0;
assign bextD = 1'b0;
end
if (`ZBB_SUPPORTED) begin
assign andnD = (ALUSelectD == 3'b111 & BSelectD[2]);
assign ornD = (ALUSelectD == 3'b110 & BSelectD[2]);
assign xnorD = (ALUSelectD == 3'b100 & BSelectD[2]);
// we only need these signals if we want to calculate a signedD flag in decode stage to pass to the comparator.
assign maxE = (Funct3E[1:0] == 2'b10 & BSelectE[2]);
assign maxuE = (Funct3E[1:0] == 2'b11 & BSelectE[2]);
assign minE = (Funct3E[1:0] == 2'b00 & BSelectE[2]);
assign minuE = (Funct3E[1:0] == 2'b01 & BSelectE[2]);
end else begin
assign andnD = 0;
assign ornD = 0;
assign xnorD = 0;
assign maxE = 0;
assign maxuE = 0;
assign minE = 0;