+package com.atmel.fpslic;
+
+import java.io.*;
+import java.util.*;
+
+public class FpslicUtil {
+
+ public static int lutSwap(int x) {
+ return
+ (x & 0x80) |
+ ((x & 0x20) << 1) |
+ ((x & 0x40) >> 1) |
+ (x & 0x10) |
+ (x & 0x08) |
+ ((x & 0x02) << 1) |
+ ((x & 0x04) >> 1) |
+ (x & 0x01);
+ }
+
+ public static void readMode4(InputStream in, Fpslic fpslic) throws IOException {
+ int count = 0;
+ BufferedReader br = new BufferedReader(new InputStreamReader(in));
+ for(String str = br.readLine(); str != null; str = br.readLine()) {
+ long foo = Long.parseLong(str, 16);
+ fpslic.mode4((int)(foo >> 24), (int)(foo >> 16), (int)(foo >> 8), (int)(foo >> 0));
+ count++;
+ }
+ fpslic.flush();
+ in.close();
+ }
+
+ public static void writeMode4(Writer w, Fpslic fpslic) throws IOException {
+ for(int x=0; x<fpslic.getWidth(); x++)
+ for(int y=0; y<fpslic.getWidth(); y++)
+ for(int z=0; z<255; z++) {
+ if ((z > 0x09 && z < 0x10) ||
+ (z > 0x11 && z < 0x20) ||
+ (z > 0x29 && z < 0x30) ||
+ (z > 0x39 && z < 0x40) ||
+ (z > 0x41 && z < 0x60) ||
+ (z > 0x67 && z < 0x70) ||
+ (z > 0x77 && z < 0xD0) ||
+ (z > 0xD3))
+ continue;
+ w.write(hex2(z));
+ w.write(hex2(y));
+ w.write(hex2(x));
+ w.write(hex2(fpslic.mode4(z, y, x) & 0xff));
+ w.write('\n');
+ }
+ w.flush();
+ }
+
+ private static String hex2(int i) {
+ String ret = Integer.toString(i, 16);
+ while(ret.length() < 2) ret = "0"+ret;
+ return ret.toUpperCase();
+ }
+
+ public static synchronized String printLut(int lut, String xn, String yn, String zn) {
+ try {
+ File f = File.createTempFile("mvsis", ".mvs");
+ f.deleteOnExit();
+
+ FileOutputStream fos = new FileOutputStream(f);
+ PrintWriter pw = new PrintWriter(new OutputStreamWriter(fos));
+ pw.println(".model clb");
+ pw.println(".inputs "+xn+" "+yn+" "+zn);
+ pw.println(".outputs O");
+ pw.println(".table "+xn+" "+yn+" "+zn+/*("X_xor_Y X_xor_Z Y_xor_Z")+*/ " -> O");
+ for(int i=8; i>=0; i--) {
+ int x = ((i & 0x01)!=0 ? 1 : 0);
+ int y = ((i & 0x02)!=0 ? 1 : 0);
+ int z = ((i & 0x04)!=0 ? 1 : 0);
+ pw.print(" "+x+" ");
+ pw.print(" "+y+" ");
+ pw.print(" "+z+" ");
+ //pw.print(" "+(x ^ y)+" ");
+ //pw.print(" "+(y ^ z)+" ");
+ //pw.print(" "+(z ^ y)+" ");
+ pw.print((lut & (1<<i))==0 ? 0 : 1);
+ pw.println();
+ }
+ pw.println(".end");
+ pw.flush();
+ pw.close();
+ Process p = Runtime.getRuntime().exec(new String[] { "mvsis", "-c", "simplify;print_factor", f.getAbsolutePath() });
+ new Gobble("mvsis: ", p.getErrorStream()).start();
+ //new Gobble("mvsis: ", p.getInputStream()).start();
+ BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
+ String ret = br.readLine();
+ //f.delete();
+ return ret.trim();
+ } catch (Exception e) {
+ e.printStackTrace();
+ return "*mvsis_error*";
+ }
+ }
+
+ public static class Gobble extends Thread {
+ private final String header;
+ private final BufferedReader br;
+ public Gobble(String header, BufferedReader br) { this.br = br; this.header = header; }
+ public Gobble(String header, Reader r) { this(header, new BufferedReader(r)); }
+ public Gobble(String header, InputStream is) { this(header, new InputStreamReader(is)); }
+ public void run() {
+ try {
+ for(String s = br.readLine(); s!=null; s=br.readLine())
+ System.err.println(header + s);
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }
+}