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[rtl] Trim rf_reg addresses for RV32E #1829

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[rtl] Trim rf_reg addresses for RV32E #1829

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a4d409a
[rtl] trim rf_reg addresses for rv32e
ANurmi Oct 3, 2022
1ce3ed0
[rtl] Syntax for linter
ANurmi Oct 4, 2022
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11 changes: 8 additions & 3 deletions rtl/ibex_register_file_ff.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -129,9 +129,14 @@ module ibex_register_file_ff #(
assign rf_reg[0] = WordZeroVal;
end

assign rdata_a_o = rf_reg[raddr_a_i];
assign rdata_b_o = rf_reg[raddr_b_i];

if (RV32E) begin : rv32e_regfile
assign rdata_a_o = rf_reg[raddr_a_i[3:0]];
assign rdata_b_o = rf_reg[raddr_b_i[3:0]];
end else begin : rv32i_regfile
assign rdata_a_o = rf_reg[raddr_a_i];
assign rdata_b_o = rf_reg[raddr_b_i];
end

// Signal not used in FF register file
logic unused_test_en;
assign unused_test_en = test_en_i;
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