From 165295ae78aa69252384a2ba8304639dac6e0924 Mon Sep 17 00:00:00 2001
From: Meinhard Kissich <privat@meinhard-kissich.at>
Date: Thu, 4 Apr 2024 12:53:13 +0200
Subject: [PATCH] Add option for RVE tt06

---
 rtl/fazyrv_rf_lut.sv | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/rtl/fazyrv_rf_lut.sv b/rtl/fazyrv_rf_lut.sv
index 72c7549..6526b8a 100644
--- a/rtl/fazyrv_rf_lut.sv
+++ b/rtl/fazyrv_rf_lut.sv
@@ -72,11 +72,27 @@ assign rb_o   = rdat[rs2_i];
   assign we = {31'b0, we_i} << rd_i;
 `endif
 
+//
+// !WARNING 
+// > TT06_SKY130_RVE
+// > RVE has been added for tt06_sky130 here only.
+// > It will only be taken over as an RFTYPE variant
+// > once verification for RVE is implemented.
+//
+localparam TT06_SKY130_RVE_NR_X_REGS = 16;
 
 generate
   genvar i;
   assign rdat[0] = 32'b0;
-  for (i=1; i<32; i=i+1) begin
+`ifdef TT06_SKY130_RVE
+  for (i=TT06_SKY130_RVE_NR_X_REGS; i<32; i=i+1) begin
+    assign rdat[i] = 32'b0;
+  end
+  for (i=1; i<TT06_SKY130_RVE_NR_X_REGS; i=i+1)
+`else
+  for (i=1; i<32; i=i+1)
+`endif
+  begin
     logic [CHUNKSIZE-1:0] din;
     logic [CHUNKSIZE-1:0] dout;
     assign din      = we[i] ? res_i : dout;