From 081a8a3ba8bfe036f31da53f9c041a2caa30fce2 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Sun, 5 May 2024 17:34:22 -0600
Subject: rtl/legacy_gfx: rename gfx -> legacy_gfx

---
 rtl/gfx/gfx_fixed_fma.sv | 73 ------------------------------------------------
 1 file changed, 73 deletions(-)
 delete mode 100644 rtl/gfx/gfx_fixed_fma.sv

(limited to 'rtl/gfx/gfx_fixed_fma.sv')

diff --git a/rtl/gfx/gfx_fixed_fma.sv b/rtl/gfx/gfx_fixed_fma.sv
deleted file mode 100644
index ec26477..0000000
--- a/rtl/gfx/gfx_fixed_fma.sv
+++ /dev/null
@@ -1,73 +0,0 @@
-`include "gfx/gfx_defs.sv"
-
-module gfx_fixed_fma
-(
-	input  logic clk,
-
-	input  fixed a,
-	             b,
-	             c,
-	input  logic stall,
-
-	output fixed q
-);
-
-`ifndef VERILATOR
-	logic[2 * $bits(fixed) - `FIXED_FRAC - 1:0] q_ext;
-	assign q = q_ext[$bits(fixed) - 1:0];
-
-	lpm_mult mult
-	(
-		.aclr(0),
-		.clock(clk),
-		.clken(!stall),
-
-		.sum({c, {`FIXED_FRAC{1'b0}}}),
-		.dataa(a),
-		.datab(b),
-		.result(q_ext)
-	);
-
-	defparam
-		mult.lpm_widtha         = $bits(fixed),
-		mult.lpm_widthb         = $bits(fixed),
-		mult.lpm_widths         = $bits(fixed) + `FIXED_FRAC,
-		/* Esto es crucial. No está documentado en ningún lado (aparte de un
-		 * comentario en r/fpga). Si lpm_widthp < lpm_widtha + lpm_widthb,
-		 * entonces result contiene los lpm_widthp bits más significativos
-		 * del producto, no los menos significativos como tendría sentido.
-		 */
-		mult.lpm_widthp         = 2 * $bits(fixed) - `FIXED_FRAC,
-		mult.lpm_representation = "SIGNED",
-		mult.lpm_pipeline       = `FIXED_FMA_STAGES;
-`else
-	logic[$bits(fixed) + `FIXED_FRAC - 1:0] q_ext;
-
-	fixed a_hold, b_hold, c_hold;
-
-	assign q = q_ext[$bits(fixed) + `FIXED_FRAC - 1:`FIXED_FRAC] + c_hold;
-	assign q_ext = a_hold * b_hold;
-
-	gfx_pipes #(.WIDTH($bits(a)), .DEPTH(`FIXED_FMA_STAGES)) a_pipes
-	(
-		.in(a),
-		.out(a_hold),
-		.*
-	);
-
-	gfx_pipes #(.WIDTH($bits(b)), .DEPTH(`FIXED_FMA_STAGES)) b_pipes
-	(
-		.in(b),
-		.out(b_hold),
-		.*
-	);
-
-	gfx_pipes #(.WIDTH($bits(c)), .DEPTH(`FIXED_FMA_STAGES)) c_pipes
-	(
-		.in(c),
-		.out(c_hold),
-		.*
-	);
-`endif
-
-endmodule
-- 
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