Updating examples to Board changes, adding irq driver demo

lm32/logic/sakc/cores/vgafb/test/Makefile

@@ -0,0 +1,11 @@
+SOURCES_PIXELFEED=tb_pixelfeed.v ../rtl/vgafb_pixelfeed.v ../rtl/vgafb_fifo64to16.v
+
+all: pixelfeed
+
+pixelfeed: $(SOURCES_PIXELFEED)
+	cver $(SOURCES_PIXELFEED)
+
+clean:
+	rm -f verilog.log
+
+.PHONY: clean pixelfeed

lm32/logic/sakc/cores/vgafb/test/tb_pixelfeed.v

@@ -0,0 +1,61 @@
+/*
+ * Milkymist VJ SoC
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+module tb_pixelfeed();
+
+reg sys_clk;
+initial sys_clk = 1'b0;
+always #5 sys_clk = ~sys_clk;
+
+reg sys_rst;
+reg vga_rst;
+
+wire pixel_valid;
+wire fml_stb;
+wire [25:0] fml_adr;
+
+initial begin
+	sys_rst = 1'b1;
+	vga_rst = 1'b1;
+	#20 sys_rst = 1'b0;
+	#20 vga_rst = 1'b0;
+end
+
+vgafb_pixelfeed dut(
+	.sys_clk(sys_clk),
+	.sys_rst(sys_rst),
+	.vga_rst(vga_rst),
+	
+	.nbursts(18'd100),
+	.baseaddress(26'd1024),
+	.baseaddress_ack(),
+	
+	.fml_adr(fml_adr),
+	.fml_stb(fml_stb),
+	.fml_ack(fml_stb),
+	.fml_di(64'hcafebabedeadbeef),
+	
+	.pixel_valid(pixel_valid),
+	.pixel(),
+	.pixel_ack(pixel_valid)
+);
+
+always @(posedge sys_clk) $display("%x", fml_adr);
+
+initial #600 $finish;
+
+endmodule