1 files changed, 63 insertions, 0 deletions
diff --git a/rtl/legacy_gfx/gfx_sp_combiner.sv b/rtl/legacy_gfx/gfx_sp_combiner.sv
new file mode 100644
index 0000000..900af00
--- /dev/null
+++ b/rtl/legacy_gfx/gfx_sp_combiner.sv
@@ -0,0 +1,63 @@
+`include "gfx/gfx_defs.sv"
+
+module gfx_sp_combiner
+(
+	input  logic     clk,
+	                 rst_n,
+
+	input  mat4      a,
+	                 b,
+	input  insn_deco deco,
+	input  logic     in_valid,
+	output logic     in_ready,
+
+	input  logic     wb_ready,
+	output logic     wb_valid,
+	output wb_op     wb
+);
+
+	wb_op wb_out;
+	logic mul_ready, mul_valid, fifo_ready, fifo_valid, skid_ready, out_stall;
+
+	assign in_ready = mul_ready && fifo_ready;
+
+	gfx_mat_mat mul
+	(
+		.q(wb_out.data),
+		.in_ready(mul_ready),
+		.in_valid(in_valid && fifo_ready),
+		.out_ready(skid_ready && fifo_valid),
+		.out_valid(mul_valid),
+		.*
+	);
+
+	gfx_fifo #(.WIDTH($bits(vreg_num)), .DEPTH(`GFX_SP_COMBINER_FIFO_DEPTH)) depth
+	(
+		.in(deco.dst),
+		.out(wb_out.dst),
+		.in_ready(fifo_ready),
+		.in_valid(in_valid && mul_ready),
+		.out_ready(skid_ready && mul_valid),
+		.out_valid(fifo_valid),
+		.*
+	);
+
+	gfx_skid_flow out_flow
+	(
+		.stall(out_stall),
+		.in_ready(skid_ready),
+		.in_valid(fifo_valid && mul_valid),
+		.out_ready(wb_ready),
+		.out_valid(wb_valid),
+		.*
+	);
+
+	gfx_skid_buf #(.WIDTH($bits(wb))) out_skid
+	(
+		.in(wb_out),
+		.out(wb),
+		.stall(out_stall),
+		.*
+	);
+
+endmodule