Merge pull request #1182 from koriakin/xc6s-bram

synth_xilinx: Initial Spartan 6 block RAM inference support.

9 files changed, 598 insertions, 8 deletions

diff --git a/techlibs/xilinx/Makefile.inc b/techlibs/xilinx/Makefile.inc
index 17c5df37d..2c6e7432e 100644
--- a/techlibs/xilinx/Makefile.inc
+++ b/techlibs/xilinx/Makefile.inc
@@ -5,6 +5,8 @@ GENFILES += techlibs/xilinx/brams_init_36.vh
 GENFILES += techlibs/xilinx/brams_init_32.vh
 GENFILES += techlibs/xilinx/brams_init_18.vh
 GENFILES += techlibs/xilinx/brams_init_16.vh
+GENFILES += techlibs/xilinx/brams_init_9.vh
+GENFILES += techlibs/xilinx/brams_init_8.vh
 
 EXTRA_OBJS += techlibs/xilinx/brams_init.mk
 .SECONDARY: techlibs/xilinx/brams_init.mk
@@ -18,13 +20,18 @@ techlibs/xilinx/brams_init_36.vh: techlibs/xilinx/brams_init.mk
 techlibs/xilinx/brams_init_32.vh: techlibs/xilinx/brams_init.mk
 techlibs/xilinx/brams_init_18.vh: techlibs/xilinx/brams_init.mk
 techlibs/xilinx/brams_init_16.vh: techlibs/xilinx/brams_init.mk
+techlibs/xilinx/brams_init_9.vh: techlibs/xilinx/brams_init.mk
+techlibs/xilinx/brams_init_8.vh: techlibs/xilinx/brams_init.mk
 
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/cells_map.v))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/cells_sim.v))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/cells_xtra.v))
-$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/brams.txt))
-$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/brams_map.v))
-$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/brams_bb.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc6s_brams.txt))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc6s_brams_map.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc6s_brams_bb.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc7_brams.txt))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc7_brams_map.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc7_brams_bb.v))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/drams.txt))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/drams_map.v))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/arith_map.v))
@@ -40,4 +47,6 @@ $(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_36.vh))
 $(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_32.vh))
 $(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_18.vh))
 $(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_16.vh))
+$(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_9.vh))
+$(eval $(call add_gen_share_file,share/xilinx,techlibs/xilinx/brams_init_8.vh))
 
diff --git a/techlibs/xilinx/brams_init.py b/techlibs/xilinx/brams_init.py
index d46a2b4f7..10057a0cb 100644
--- a/techlibs/xilinx/brams_init.py
+++ b/techlibs/xilinx/brams_init.py
@@ -1,5 +1,17 @@
 #!/usr/bin/env python3
 
+with open("techlibs/xilinx/brams_init_9.vh", "w") as f:
+    for i in range(4):
+        init_snippets = [" INIT[%3d*9+8]" % (k+256*i,) for k in range(255, -1, -1)]
+        for k in range(4, 256, 4):
+            init_snippets[k] = "\n           " + init_snippets[k]
+        print(".INITP_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
+    for i in range(32):
+        init_snippets = [" INIT[%3d*9 +: 8]" % (k+32*i,) for k in range(31, -1, -1)]
+        for k in range(4, 32, 4):
+            init_snippets[k] = "\n          " + init_snippets[k]
+        print(".INIT_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
+
 with open("techlibs/xilinx/brams_init_18.vh", "w") as f:
     for i in range(8):
         init_snippets = [" INIT[%3d*9+8]" % (k+256*i,) for k in range(255, -1, -1)]
@@ -24,6 +36,10 @@ with open("techlibs/xilinx/brams_init_36.vh", "w") as f:
             init_snippets[k] = "\n          " + init_snippets[k]
         print(".INIT_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
 
+with open("techlibs/xilinx/brams_init_8.vh", "w") as f:
+    for i in range(32):
+        print(".INIT_%02X(INIT[%3d*256 +: 256])," % (i, i), file=f)
+
 with open("techlibs/xilinx/brams_init_16.vh", "w") as f:
     for i in range(64):
         print(".INIT_%02X(INIT[%3d*256 +: 256])," % (i, i), file=f)
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index 77daa745c..b672a0d4f 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -236,8 +236,13 @@ struct SynthXilinxPass : public ScriptPass
 
 			run("read_verilog -lib +/xilinx/cells_xtra.v");
 
-			if (!nobram || help_mode)
-				run("read_verilog -lib +/xilinx/brams_bb.v", "(skip if '-nobram')");
+			if (help_mode) {
+				run("read_verilog -lib +/xilinx/{family}_brams_bb.v");
+			} else if (family == "xc6s") {
+				run("read_verilog -lib +/xilinx/xc6s_brams_bb.v");
+			} else if (family == "xc7") {
+				run("read_verilog -lib +/xilinx/xc7_brams_bb.v");
+			}
 
 			run(stringf("hierarchy -check %s", top_opt.c_str()));
 		}
@@ -280,9 +285,19 @@ struct SynthXilinxPass : public ScriptPass
 		}
 
 		if (check_label("bram", "(skip if '-nobram')")) {
-			if (!nobram || help_mode) {
-				run("memory_bram -rules +/xilinx/brams.txt");
-				run("techmap -map +/xilinx/brams_map.v");
+			if (help_mode) {
+				run("memory_bram -rules +/xilinx/{family}_brams.txt");
+				run("techmap -map +/xilinx/{family}_brams_map.v");
+			} else if (!nobram) {
+				if (family == "xc6s") {
+					run("memory_bram -rules +/xilinx/xc6s_brams.txt");
+					run("techmap -map +/xilinx/xc6s_brams_map.v");
+				} else if (family == "xc7") {
+					run("memory_bram -rules +/xilinx/xc7_brams.txt");
+					run("techmap -map +/xilinx/xc7_brams_map.v");
+				} else {
+					log_warning("Block RAM inference not yet supported for family %s.\n", family.c_str());
+				}
 			}
 		}
 
diff --git a/techlibs/xilinx/xc6s_brams.txt b/techlibs/xilinx/xc6s_brams.txt
new file mode 100644
index 000000000..17cd8e355
--- /dev/null
+++ b/techlibs/xilinx/xc6s_brams.txt
@@ -0,0 +1,84 @@
+
+bram $__XILINX_RAMB8BWER_SDP
+  init 1
+  abits 8
+  dbits 36
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 1 4
+  transp 0 0
+  clocks 2 3
+  clkpol 2 3
+endbram
+
+bram $__XILINX_RAMB16BWER_TDP
+  init 1
+  abits  9     @a9d36
+  dbits 36     @a9d36
+  abits 10     @a10d18
+  dbits 18     @a10d18
+  abits 11     @a11d9
+  dbits  9     @a11d9
+  abits 12     @a12d4
+  dbits  4     @a12d4
+  abits 13     @a13d2
+  dbits  2     @a13d2
+  abits 14     @a14d1
+  dbits  1     @a14d1
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 1 4   @a9d36
+  enable 1 2   @a10d18
+  enable 1 1   @a11d9 @a12d4 @a13d2 @a14d1
+  transp 0 0
+  clocks 2 3
+  clkpol 2 3
+endbram
+
+bram $__XILINX_RAMB8BWER_TDP
+  init 1
+  abits  9     @a9d18
+  dbits 18     @a9d18
+  abits 10     @a10d9
+  dbits  9     @a10d9
+  abits 11     @a11d4
+  dbits  4     @a11d4
+  abits 12     @a12d2
+  dbits  2     @a12d2
+  abits 13     @a13d1
+  dbits  1     @a13d1
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 1 2   @a9d18
+  enable 1 1   @a10d9 @a11d4 @a12d2 @a13d1
+  transp 0 0
+  clocks 2 3
+  clkpol 2 3
+endbram
+
+match $__XILINX_RAMB8BWER_SDP
+  min bits 4096
+  min efficiency 5
+  shuffle_enable B
+  make_transp
+  or_next_if_better
+endmatch
+
+match $__XILINX_RAMB16BWER_TDP
+  min bits 4096
+  min efficiency 5
+  shuffle_enable B
+  make_transp
+  or_next_if_better
+endmatch
+
+match $__XILINX_RAMB8BWER_TDP
+  min bits 4096
+  min efficiency 5
+  shuffle_enable B
+  make_transp
+endmatch
+
diff --git a/techlibs/xilinx/xc6s_brams_bb.v b/techlibs/xilinx/xc6s_brams_bb.v
new file mode 100644
index 000000000..eb1a29579
--- /dev/null
+++ b/techlibs/xilinx/xc6s_brams_bb.v
@@ -0,0 +1,211 @@
+module RAMB8BWER (
+	input CLKAWRCLK,
+	input CLKBRDCLK,
+	input ENAWREN,
+	input ENBRDEN,
+	input REGCEA,
+	input REGCEBREGCE,
+	input RSTA,
+	input RSTBRST,
+
+	input [12:0] ADDRAWRADDR,
+	input [12:0] ADDRBRDADDR,
+	input [15:0] DIADI,
+	input [15:0] DIBDI,
+	input [1:0] DIPADIP,
+	input [1:0] DIPBDIP,
+	input [1:0] WEAWEL,
+	input [1:0] WEBWEU,
+
+	output [15:0] DOADO,
+	output [15:0] DOBDO,
+	output [1:0] DOPADOP,
+	output [1:0] DOPBDOP
+);
+	parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+	parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+	parameter RAM_MODE = "TDP";
+	parameter integer DOA_REG = 0;
+	parameter integer DOB_REG = 0;
+
+	parameter integer DATA_WIDTH_A = 0;
+	parameter integer DATA_WIDTH_B = 0;
+
+	parameter WRITE_MODE_A = "WRITE_FIRST";
+	parameter WRITE_MODE_B = "WRITE_FIRST";
+
+	parameter EN_RSTRAM_A = "TRUE";
+	parameter EN_RSTRAM_B = "TRUE";
+
+	parameter INIT_A = 18'h000000000;
+	parameter INIT_B = 18'h000000000;
+	parameter SRVAL_A = 18'h000000000;
+	parameter SRVAL_B = 18'h000000000;
+
+	parameter RST_PRIORITY_A = "CE";
+	parameter RST_PRIORITY_B = "CE";
+
+	parameter RSTTYPE = "SYNC";
+
+	parameter SIM_COLLISION_CHECK = "ALL";
+endmodule
+
+module RAMB16BWER (
+	input CLKA,
+	input CLKB,
+	input ENA,
+	input ENB,
+	input REGCEA,
+	input REGCEB,
+	input RSTA,
+	input RSTB,
+
+	input [13:0] ADDRA,
+	input [13:0] ADDRB,
+	input [31:0] DIA,
+	input [31:0] DIB,
+	input [3:0] DIPA,
+	input [3:0] DIPB,
+	input [3:0] WEA,
+	input [3:0] WEB,
+
+	output [31:0] DOA,
+	output [31:0] DOB,
+	output [3:0] DOPA,
+	output [3:0] DOPB
+);
+	parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INITP_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+	parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+	parameter INIT_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+	parameter integer DOA_REG = 0;
+	parameter integer DOB_REG = 0;
+
+	parameter integer DATA_WIDTH_A = 0;
+	parameter integer DATA_WIDTH_B = 0;
+
+	parameter WRITE_MODE_A = "WRITE_FIRST";
+	parameter WRITE_MODE_B = "WRITE_FIRST";
+
+	parameter EN_RSTRAM_A = "TRUE";
+	parameter EN_RSTRAM_B = "TRUE";
+
+	parameter INIT_A = 36'h000000000;
+	parameter INIT_B = 36'h000000000;
+	parameter SRVAL_A = 36'h000000000;
+	parameter SRVAL_B = 36'h000000000;
+
+	parameter RST_PRIORITY_A = "CE";
+	parameter RST_PRIORITY_B = "CE";
+
+	parameter RSTTYPE = "SYNC";
+
+	parameter SIM_COLLISION_CHECK = "ALL";
+endmodule
+
diff --git a/techlibs/xilinx/xc6s_brams_map.v b/techlibs/xilinx/xc6s_brams_map.v
new file mode 100644
index 000000000..c9b33af42
--- /dev/null
+++ b/techlibs/xilinx/xc6s_brams_map.v
@@ -0,0 +1,255 @@
+module \$__XILINX_RAMB8BWER_SDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
+	parameter CLKPOL2 = 1;
+	parameter CLKPOL3 = 1;
+	parameter [9215:0] INIT = 9216'bx;
+
+	input CLK2;
+	input CLK3;
+
+	input [7:0] A1ADDR;
+	output [35:0] A1DATA;
+	input A1EN;
+
+	input [7:0] B1ADDR;
+	input [35:0] B1DATA;
+	input [3:0] B1EN;
+
+	wire [12:0] A1ADDR_13 = {A1ADDR, 5'b0};
+	wire [12:0] B1ADDR_13 = {B1ADDR, 5'b0};
+
+	wire [3:0] DIP, DOP;
+	wire [31:0] DI, DO;
+
+	assign A1DATA = { DOP[3], DO[31:24], DOP[2], DO[23:16], DOP[1], DO[15: 8], DOP[0], DO[ 7: 0] };
+	assign { DIP[3], DI[31:24], DIP[2], DI[23:16], DIP[1], DI[15: 8], DIP[0], DI[ 7: 0] } = B1DATA;
+
+	RAMB8BWER #(
+		.RAM_MODE("SDP"),
+		.DATA_WIDTH_A(36),
+		.DATA_WIDTH_B(36),
+		.WRITE_MODE_A("READ_FIRST"),
+		.WRITE_MODE_B("READ_FIRST"),
+		`include "brams_init_9.vh"
+	) _TECHMAP_REPLACE_ (
+		.DOBDO(DO[31:16]),
+		.DOADO(DO[15:0]),
+		.DOPBDOP(DOP[3:2]),
+		.DOPADOP(DOP[1:0]),
+		.DIBDI(DI[31:16]),
+		.DIADI(DI[15:0]),
+		.DIPBDIP(DIP[3:2]),
+		.DIPADIP(DIP[1:0]),
+		.WEBWEU(B1EN[3:2]),
+		.WEAWEL(B1EN[1:0]),
+
+		.ADDRAWRADDR(B1ADDR_13),
+		.CLKAWRCLK(CLK3 ^ !CLKPOL3),
+		.ENAWREN(|1),
+		.REGCEA(|0),
+		.RSTA(|0),
+
+		.ADDRBRDADDR(A1ADDR_13),
+		.CLKBRDCLK(CLK2 ^ !CLKPOL2),
+		.ENBRDEN(A1EN),
+		.REGCEBREGCE(|1),
+		.RSTB(|0)
+	);
+endmodule
+
+// ------------------------------------------------------------------------
+
+module \$__XILINX_RAMB16BWER_TDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
+	parameter CFG_ABITS = 9;
+	parameter CFG_DBITS = 36;
+	parameter CFG_ENABLE_B = 4;
+
+	parameter CLKPOL2 = 1;
+	parameter CLKPOL3 = 1;
+	parameter [18431:0] INIT = 18432'bx;
+
+	input CLK2;
+	input CLK3;
+
+	input [CFG_ABITS-1:0] A1ADDR;
+	output [CFG_DBITS-1:0] A1DATA;
+	input A1EN;
+
+	input [CFG_ABITS-1:0] B1ADDR;
+	input [CFG_DBITS-1:0] B1DATA;
+	input [CFG_ENABLE_B-1:0] B1EN;
+
+	wire [13:0] A1ADDR_14 = A1ADDR << (14 - CFG_ABITS);
+	wire [13:0] B1ADDR_14 = B1ADDR << (14 - CFG_ABITS);
+	wire [3:0] B1EN_4 = {4{B1EN}};
+
+	wire [3:0] DIP, DOP;
+	wire [31:0] DI, DO;
+
+	wire [31:0] DOB;
+	wire [3:0] DOPB;
+
+	assign A1DATA = { DOP[3], DO[31:24], DOP[2], DO[23:16], DOP[1], DO[15: 8], DOP[0], DO[ 7: 0] };
+	assign { DIP[3], DI[31:24], DIP[2], DI[23:16], DIP[1], DI[15: 8], DIP[0], DI[ 7: 0] } = B1DATA;
+
+	generate if (CFG_DBITS > 8) begin
+		RAMB16BWER #(
+			.DATA_WIDTH_A(CFG_DBITS),
+			.DATA_WIDTH_B(CFG_DBITS),
+			.WRITE_MODE_A("READ_FIRST"),
+			.WRITE_MODE_B("READ_FIRST"),
+			`include "brams_init_18.vh"
+		) _TECHMAP_REPLACE_ (
+			.DIA(32'd0),
+			.DIPA(4'd0),
+			.DOA(DO[31:0]),
+			.DOPA(DOP[3:0]),
+			.ADDRA(A1ADDR_14),
+			.CLKA(CLK2 ^ !CLKPOL2),
+			.ENA(A1EN),
+			.REGCEA(|1),
+			.RSTA(|0),
+			.WEA(4'b0),
+
+			.DIB(DI),
+			.DIPB(DIP),
+			.DOB(DOB),
+			.DOPB(DOPB),
+			.ADDRB(B1ADDR_14),
+			.CLKB(CLK3 ^ !CLKPOL3),
+			.ENB(|1),
+			.REGCEB(|0),
+			.RSTB(|0),
+			.WEB(B1EN_4)
+		);
+	end else begin
+		RAMB16BWER #(
+			.DATA_WIDTH_A(CFG_DBITS),
+			.DATA_WIDTH_B(CFG_DBITS),
+			.WRITE_MODE_A("READ_FIRST"),
+			.WRITE_MODE_B("READ_FIRST"),
+			`include "brams_init_16.vh"
+		) _TECHMAP_REPLACE_ (
+			.DIA(32'd0),
+			.DIPA(4'd0),
+			.DOA(DO[31:0]),
+			.DOPA(DOP[3:0]),
+			.ADDRA(A1ADDR_14),
+			.CLKA(CLK2 ^ !CLKPOL2),
+			.ENA(A1EN),
+			.REGCEA(|1),
+			.RSTA(|0),
+			.WEA(4'b0),
+
+			.DIB(DI),
+			.DIPB(DIP),
+			.DOB(DOB),
+			.DOPB(DOPB),
+			.ADDRB(B1ADDR_14),
+			.CLKB(CLK3 ^ !CLKPOL3),
+			.ENB(|1),
+			.REGCEB(|0),
+			.RSTB(|0),
+			.WEB(B1EN_4)
+		);
+	end endgenerate
+endmodule
+
+// ------------------------------------------------------------------------
+
+module \$__XILINX_RAMB8BWER_TDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
+	parameter CFG_ABITS = 9;
+	parameter CFG_DBITS = 18;
+	parameter CFG_ENABLE_B = 2;
+
+	parameter CLKPOL2 = 1;
+	parameter CLKPOL3 = 1;
+	parameter [9215:0] INIT = 9216'bx;
+
+	input CLK2;
+	input CLK3;
+
+	input [CFG_ABITS-1:0] A1ADDR;
+	output [CFG_DBITS-1:0] A1DATA;
+	input A1EN;
+
+	input [CFG_ABITS-1:0] B1ADDR;
+	input [CFG_DBITS-1:0] B1DATA;
+	input [CFG_ENABLE_B-1:0] B1EN;
+
+	wire [12:0] A1ADDR_13 = A1ADDR << (13 - CFG_ABITS);
+	wire [12:0] B1ADDR_13 = B1ADDR << (13 - CFG_ABITS);
+	wire [1:0] B1EN_2 = {2{B1EN}};
+
+	wire [1:0] DIP, DOP;
+	wire [15:0] DI, DO;
+
+	wire [15:0] DOBDO;
+	wire [1:0] DOPBDOP;
+
+	assign A1DATA = { DOP[1], DO[15: 8], DOP[0], DO[ 7: 0] };
+	assign { DIP[1], DI[15: 8], DIP[0], DI[ 7: 0] } = B1DATA;
+
+	generate if (CFG_DBITS > 8) begin
+		RAMB8BWER #(
+			.RAM_MODE("TDP"),
+			.DATA_WIDTH_A(CFG_DBITS),
+			.DATA_WIDTH_B(CFG_DBITS),
+			.WRITE_MODE_A("READ_FIRST"),
+			.WRITE_MODE_B("READ_FIRST"),
+			`include "brams_init_9.vh"
+		) _TECHMAP_REPLACE_ (
+			.DIADI(16'b0),
+			.DIPADIP(2'b0),
+			.DOADO(DO),
+			.DOPADOP(DOP),
+			.ADDRAWRADDR(A1ADDR_13),
+			.CLKAWRCLK(CLK2 ^ !CLKPOL2),
+			.ENAWREN(A1EN),
+			.REGCEA(|1),
+			.RSTA(|0),
+			.WEAWEL(2'b0),
+
+			.DIBDI(DI),
+			.DIPBDIP(DIP),
+			.DOBDO(DOBDO),
+			.DOPBDOP(DOPBDOP),
+			.ADDRBRDADDR(B1ADDR_13),
+			.CLKBRDCLK(CLK3 ^ !CLKPOL3),
+			.ENBRDEN(|1),
+			.REGCEBREGCE(|0),
+			.RSTB(|0),
+			.WEBWEU(B1EN_2)
+		);
+	end else begin
+		RAMB8BWER #(
+			.RAM_MODE("TDP"),
+			.DATA_WIDTH_A(CFG_DBITS),
+			.DATA_WIDTH_B(CFG_DBITS),
+			.WRITE_MODE_A("READ_FIRST"),
+			.WRITE_MODE_B("READ_FIRST"),
+			`include "brams_init_8.vh"
+		) _TECHMAP_REPLACE_ (
+			.DIADI(16'b0),
+			.DIPADIP(2'b0),
+			.DOADO(DO),
+			.DOPADOP(DOP),
+			.ADDRAWRADDR(A1ADDR_13),
+			.CLKAWRCLK(CLK2 ^ !CLKPOL2),
+			.ENAWREN(A1EN),
+			.REGCEA(|1),
+			.RSTA(|0),
+			.WEAWEL(2'b0),
+
+			.DIBDI(DI),
+			.DIPBDIP(DIP),
+			.DOBDO(DOBDO),
+			.DOPBDOP(DOPBDOP),
+			.ADDRBRDADDR(B1ADDR_13),
+			.CLKBRDCLK(CLK3 ^ !CLKPOL3),
+			.ENBRDEN(|1),
+			.REGCEBREGCE(|0),
+			.RSTB(|0),
+			.WEBWEU(B1EN_2)
+		);
+	end endgenerate
+endmodule
diff --git a/techlibs/xilinx/brams.txt b/techlibs/xilinx/xc7_brams.txt
index f1161114e..f1161114e 100644
--- a/techlibs/xilinx/brams.txt
+++ b/techlibs/xilinx/xc7_brams.txt
diff --git a/techlibs/xilinx/brams_bb.v b/techlibs/xilinx/xc7_brams_bb.v
index a682ba4a7..a682ba4a7 100644
--- a/techlibs/xilinx/brams_bb.v
+++ b/techlibs/xilinx/xc7_brams_bb.v
diff --git a/techlibs/xilinx/brams_map.v b/techlibs/xilinx/xc7_brams_map.v
index 7ea49158d..7ea49158d 100644
--- a/techlibs/xilinx/brams_map.v
+++ b/techlibs/xilinx/xc7_brams_map.v