gateware

commit 91dff4fe651486162397df78e08f188324a7aa65
parent e250a1aaa851485022cabacd1e3366119660f917
Author: Brian Swetland <swetland@frotz.net>
Date:   Tue, 29 Dec 2015 20:55:07 -0800

testbench: 64K words memory to avoid clobbering

This thing needs some cleanup...

Diffstat:
M
hdl/testbench.sv
 | 
2
+-
M
src/testbench.cpp
 | 
8
+++++---

2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/hdl/testbench.sv b/hdl/testbench.sv
@@ -11,7 +11,7 @@ reg [15:0]count = 16'd0;
 
 always @(posedge clk) begin
 	count <= count + 16'd1;
-	if (count == 16'hFFFF) $finish;
+	if (count == 16'd256) $finish;
 end
 
 wire [15:0]wdata;
diff --git a/src/testbench.cpp b/src/testbench.cpp
@@ -31,14 +31,16 @@
 #include "verilated.h"
 #include <verilated_vcd_c.h>
 
-static unsigned memory[4096];
+static unsigned memory[65536];
 
 void dpi_mem_write(int addr, int data) {
-	memory[addr & 0xFFF] = data;
+	fprintf(stderr,"WR %04x = %08x\n", addr, data);
+	memory[addr & 0xFFFF] = data;
 }
 
 void dpi_mem_read(int addr, int *data) {
-	*data = (int) memory[addr & 0xFFF];
+	//fprintf(stderr,"RD %04x = %08x\n", addr, memory[addr & 0xFFFF]);
+	*data = (int) memory[addr & 0xFFFF];
 }
 
 void loadmem(const char *fn) {