From 93a12f3ca1d740fc3063c10dcbb481ff528d6da0 Mon Sep 17 00:00:00 2001
From: ikari <ikari@micecat.ath.cx>
Date: Thu, 10 Nov 2011 23:41:33 +0100
Subject: [PATCH] FPGA: fix occasional erroneous write inhibit

---
 verilog/sd2snes/main.v       | 4 ++--
 verilog/sd2snes/sd2snes.xise | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/verilog/sd2snes/main.v b/verilog/sd2snes/main.v
index 4199373..7d3fc6b 100644
--- a/verilog/sd2snes/main.v
+++ b/verilog/sd2snes/main.v
@@ -460,7 +460,7 @@ end
 reg snes_wr_cycle;
 
 always @(posedge CLK2) begin
-  if(SNES_cycle_start) begin
+  if(SNES_cycle_start & ~SNES_WR_start) begin
     STATE <= ST_SNES_RD_ADDR;
   end else if(SNES_WR_start) begin
     STATE <= ST_SNES_WR_ADDR;
@@ -605,6 +605,6 @@ assign SNES_DATABUS_DIR = !SNES_READ ? 1'b1 : 1'b0;
 assign IRQ_DIR = 1'b0;
 assign SNES_IRQ = 1'bZ;
 
-assign p113_out = ROM_WE;
+assign p113_out = 1'b0;
 
 endmodule
diff --git a/verilog/sd2snes/sd2snes.xise b/verilog/sd2snes/sd2snes.xise
index 2923d2b..f432d1f 100644
--- a/verilog/sd2snes/sd2snes.xise
+++ b/verilog/sd2snes/sd2snes.xise
@@ -377,8 +377,8 @@
     <property xil_pn:name="Specify Top Level Instance Names Post-Route" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Specify Top Level Instance Names Post-Translate" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="8" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="8" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="1" xil_pn:valueState="default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="1" xil_pn:valueState="default"/>
     <property xil_pn:name="Structure window" xil_pn:value="true" xil_pn:valueState="default"/>
     <property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
     <property xil_pn:name="Target Simulator" xil_pn:value="Please Specify" xil_pn:valueState="default"/>