X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fobits%2FAtmelSerial.java;h=aab369b1784eb09040c7e1eee3a94731f4ac2eb6;hb=cddd782397e118024c4b428263f969c57c0c2c29;hp=6c3ee4f3b2828eb0896bea890a7a8832dea45081;hpb=d4b20f5d2bc0a9ac401fba811917bdfaaf54ce62;p=slipway.git

diff --git a/src/edu/berkeley/obits/AtmelSerial.java b/src/edu/berkeley/obits/AtmelSerial.java
index 6c3ee4f..aab369b 100644
--- a/src/edu/berkeley/obits/AtmelSerial.java
+++ b/src/edu/berkeley/obits/AtmelSerial.java
@@ -1,6 +1,13 @@
 package edu.berkeley.obits;
 
+import edu.berkeley.slipway.*;
+import static edu.berkeley.obits.device.atmel.AtmelDevice.Constants.*;
+import static edu.berkeley.obits.device.atmel.AtmelDevice.Util.*;
 import edu.berkeley.obits.device.atmel.*;
+import edu.berkeley.obits.gui.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.color.*;
 import org.ibex.util.*;
 import java.io.*;
 import java.util.*;
@@ -8,34 +15,1574 @@ import gnu.io.*;
 
 public class AtmelSerial {
 
+    //public static boolean mullers = false;
+    public static boolean mullers = true;
+    public static int masterx = 1;
     public static SerialPort detectObitsPort() throws Exception {
         Enumeration e = CommPortIdentifier.getPortIdentifiers();
         while(e.hasMoreElements()) {
             CommPortIdentifier cpi = (CommPortIdentifier)e.nextElement();
             Log.info(AtmelSerial.class, "trying " + cpi.getName());
+            if (cpi.getName().startsWith("/dev/cu.usbserial-"))
+                return new RXTXPort(cpi.getName());
+            if (cpi.getName().startsWith("/dev/ttyS0"))
+                return new RXTXPort(cpi.getName());
         }
-        SerialPort ret = new RXTXPort("/dev/cu.usbserial-FTCBWI2P");
-        Log.info(AtmelSerial.class, "returning " + ret);
-        return ret;
+        Log.info(AtmelSerial.class, "returning null...");
+        return null;
     }
-
+    public static int PIPELEN=20;
     public static void main(String[] s) throws Exception {
-        AvrDrone device = new AvrDrone(detectObitsPort());
-        int count = 0;
+      //AvrDrone device = new AvrDrone(detectObitsPort());
+        //AvrDrone device = new AvrDrone();
+        AvrDrone device = new AvrDrone(new FtdiBoard());
+        At40k at40k = new At40k.At40k10(device);
         try {
             long begin = System.currentTimeMillis();
-            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-            for(String str = br.readLine(); str != null; str = br.readLine()) {
-                long foo = Long.parseLong(str, 16);
-                device.mode4((int)(foo >> 24), (int)(foo >> 16), (int)(foo >>  8), (int)(foo >>  0));
-                count++;
-                if (count % 100 == 0) Log.info(AtmelSerial.class, "wrote " + count + " configuration octets");
-            }
-            device.flush();
+            device.readMode4(new ProgressInputStream("configuring fabric", System.in, 111740));
             long end = System.currentTimeMillis();
             Log.info(AtmelSerial.class, "finished in " + ((end-begin)/1000) + "s");
+            Thread.sleep(1000);
+            Log.info(AtmelSerial.class, "issuing command");
+
+            //at40k.iob_top(2, true).oe(false);
+            //at40k.iob_top(2, false).oe(false);
+            //at40k.iob_top(1, true).oe(false);
+
+            // this command confirmed to turn *on* led0
+            //at40k.iob_top(1, false).output(0);
+            /*
+            for(int i=0; i<20; i++) {
+                at40k.iob_bot(i, false).output(0);
+                at40k.iob_bot(i, true).output(0);
+            }
+            */
+
+            //System.out.println("tick");
+                //Thread.sleep(3000);
+                //System.out.println("tick");
+                //at40k.cell(0x01, 0x17).xlut((byte)0x);
+
+            /*
+            System.out.println(Integer.toString(0xff & at40k.cell(0x01, 0x17).xlut(), 16));
+            System.out.println(Integer.toString(0xff & at40k.cell(0x01, 0x17).ylut(), 16));
+            at40k.cell(0x01, 0x17).ylut((byte)0xff);
+            */
+
+            //at40k.cell(0x01, 0x17).wi(L1);
+            /*
+            System.out.println("a: " + at40k.new SectorWire(true, 0, 4, 0x17).driverRight());
+            System.out.println("b: " + at40k.new SectorWire(true, 1, 4, 0x17).driverRight());
+            At40k.SectorWire h0p0 = at40k.new SectorWire(true, 0, 0, 0x17);
+            At40k.SectorWire h0p1 = at40k.new SectorWire(true, 1, 0, 0x17);
+            At40k.SectorWire h0p2 = at40k.new SectorWire(true, 2, 0, 0x17);
+            At40k.SectorWire h4p0 = at40k.new SectorWire(true, 0, 4, 0x17);
+            At40k.SectorWire h4p1 = at40k.new SectorWire(true, 1, 4, 0x17);
+            At40k.SectorWire h4p2 = at40k.new SectorWire(true, 2, 4, 0x17);
+
+            //h4p1.drives(h0p1, false);
+            //at40k.cell(0x04, 0x17).out(L1, false);
+            //at40k.cell(0x04, 0x17).h(L0, false);
+
+            for(int plane=0; plane<5; plane++) {
+                at40k.new SectorWire(true, plane,     4, 0x17).drives(at40k.new SectorWire(true, plane,     0, 0x17), false);
+                at40k.cell(0x04, 0x17).out(plane, false);
+                at40k.cell(0x04, 0x17).h(plane, false);
+                at40k.cell(0x01, 0x17).h(plane, false);
+            }
+            try { Thread.sleep(2000); } catch (Exception e) { }
+
+            int plane=0;
+            at40k.new SectorWire(true, plane, 4, 0x17).drives(at40k.new SectorWire(true, plane, 0, 0x17), true);
+            at40k.cell(0x04, 0x17).out(plane, true);
+            at40k.cell(0x04, 0x17).h(plane, true);
+            at40k.cell(0x01, 0x17).h(plane, true);
+            at40k.cell(0x01, 0x17).wi(plane);
+
+            */
+
+            /*
+            System.out.println("xlut is " + hex(at40k.cell(0x04, 0x17).xlut()));
+            System.out.println("ylut is " + hex(at40k.cell(0x04, 0x17).ylut()));
+            At40k.Cell cell = at40k.cell(0x04, 0x17);
+            //cell.xlut(0xff);
+            //cell.f(false);
+            System.out.println(cell.c());
+            cell.c(YLUT);
+            cell.ylut(0x4D);
+            cell.xlut(0x00);
+
+            cell.b(false);
+            cell.f(false);
+            //cell.t(false, false, true);
+            cell.t(false, true, false);
+            cell.out(L3, true);
+            cell.wi(L3);
+
+            cell.yo(false);
+            cell.h(L0, false);
+            cell.h(L1, false);
+            cell.h(L2, false);
+            cell.h(L3, false);
+            cell.h(L4, false);
+
+            for(int i=3; i>=1; i--) {
+                at40k.cell(i, 0x17).yi(EAST);
+                at40k.cell(i, 0x17).ylut(0x55);
+                at40k.cell(i, 0x17).yo(false);
+            }
+            */
+
+            //System.out.println("reading port status: " + Integer.toString(device.readBus() & 0xff, 16));
+
+
+            // blank these out
+            /*
+            at40k.cell(23, 8).ylut(0xff);
+            at40k.cell(23, 11).ylut(0xff);
+            at40k.iob_right(8, true).enableOutput();
+            at40k.iob_right(11, true).enableOutput();
+            */
+            //for(int x=4;  x<=22; x++) swap(at40k.cell(x, 22), NW, NORTH);
+
+
+            // entry cell: just copy X->X Y->Y
+            //at40k.cell(4,23).b(false);
+            //at40k.cell(4,23).yo(false);
+            //at40k.cell(4,23).ylut(at40k.cell(4,23).xlut());
+            //at40k.cell(4,23).xo(false);
+            /*
+            at40k.cell(4,23).xlut(0x55);
+            at40k.cell(4,23).ylut(0x55);
+            */
+            /*
+            at40k.cell(4,23).xlut(0x71);
+            at40k.cell(4,23).ylut(0x44);
+            at40k.cell(4,23).c(YLUT);
+            at40k.cell(4,23).f(false);
+            at40k.cell(4,23).t(false, false, true);
+            */
+
+            //for(int x=6;  x<=23; x++) copy(at40k.cell(x, 23), NW, WEST);  // top row copies to the right
+            /*
+            copy(at40k.cell(5, 22), NW, NORTH);
+            for(int x=6;  x<=22; x++) copy(at40k.cell(x, 22), NW, WEST);  // second top row copies to the right
+            //for(int y=22; y>=10; y--) copy(at40k.cell(23, y), NW, NORTH); // right edge copies down
+            for(int y=21; y>=9;  y--) copy(at40k.cell(22, y), NW, NORTH); // second right edge copies down
+            copy(at40k.cell(23, 9), NW, WEST);                            // second output
+            */
+            /*
+            handshaker(at40k.cell(4,23));
+            at40k.cell(4,23).xi(NW);
+            at40k.cell(4,23).yi(SOUTH);
+
+            //handshaker(at40k.cell(5,23));
+            //at40k.cell(5,23).yi(NORTH);
+
+            at40k.cell(5,23).yi(NORTH);
+            at40k.cell(5,23).xlut(0x55);
+            at40k.cell(5,23).xi(SW);
+            at40k.cell(5,23).ylut(0x55);
+            at40k.cell(5,22).yi(NORTH);
+            at40k.cell(5,22).xlut(0x55);
+
+            bounce(at40k.cell(4,22));
+
+            // cell southeast of entry cell
+            at40k.cell(3,22).xi(NE);      // NW->xin
+            at40k.cell(3,22).ylut(0x33);  // xin->y
+            at40k.cell(3,22).yo(false);   // y->yout
+            copy(at40k.cell(3, 21), NW, NORTH);  // second top row copies to the right
+            copy(at40k.cell(4, 21), NW, EAST);  // second top row copies to the right
+            copy(at40k.cell(5, 21), NW, EAST);  // second top row copies to the right
+            copy(at40k.cell(6, 21), NW, EAST);  // second top row copies to the right
+            copy(at40k.cell(6, 22), NW, SOUTH);  // second top row copies to the right
+            */
+            /*
+            at40k.cell(05,22).xlut(0xff);
+            at40k.cell(05,22).ylut(0xff);
+            at40k.cell(05,22).c(XLUT);
+            at40k.cell(05,22).f(false);
+            at40k.cell(05,22).b(false);
+            at40k.cell(05,22).oe(NONE);
+            at40k.cell(05,22).v(L3, true);
+            at40k.cell(05,22).out(L3, true);
+            */
+            /*
+            at40k.cell(4,23).ylut(~0xCC);
+            at40k.cell(4,23).xlut(~0xAA);
+            at40k.cell(5,23).ylut(~0xAA);
+            at40k.cell(5,23).xlut(~0xAA);
+            for(int i=6; i<PIPELEN+2; i++) {
+                at40k.cell(i, 23).ylut(0xAA);
+                at40k.cell(i, 23).xlut(0xCC);
+                at40k.cell(i, 23).yi(WEST);
+            }
+            */
+
+            /* LAST
+            System.out.println("doit");
+            if (mullers) doitx(at40k, device);
+            //System.out.println("counter");
+            //counter(at40k, device);
+
+            at40k.cell(21,15).yi(WEST);
+            at40k.cell(21,15).ylut(0xAA);
+
+            at40k.cell(22,15).yi(WEST);
+            at40k.cell(22,15).ylut(0xAA);
+            */
+            at40k.cell(23,15).h(3, true);
+            at40k.cell(23,15).yi(L3);
+            at40k.cell(23,15).ylut(0xAA);
+            at40k.iob_right(15, true).enableOutput(WEST);
+
+
+            At40k.Cell c = at40k.cell(10,10);
+            c.ylut(~LUT_SELF);
+            c.xlut(LUT_Z);
+            c.yi(WEST);
+            c.c(YLUT);
+            c.f(false);
+            c.t(TMUX_FB);
+            copy(c.west(), EAST, NW);
+            copy(c.west().north().west(), SE, SE);
+
+            c = c.east();
+            c.ylut(~LUT_SELF);
+            c.xlut(LUT_Z);
+            c.yi(EAST);
+            c.c(YLUT);
+            c.f(false);
+            c.t(TMUX_FB);
+            copy(c.east(), WEST, SE);
+            copy(c.east().south().east(), NW, NW);
+
+            c = c.north();
+            copy(c.north(), SOUTH, SOUTH);
+            c.xlut((LUT_SELF & ~LUT_OTHER) | LUT_Z);
+            c.ylut(LUT_Z);
+            c.yi(SOUTH);
+            c.c(XLUT);
+            c.xi(SW);
+            c.wi(L4);
+            c.f(false);
+            c.t(TMUX_W_AND_FB);
+            c.v(L4, false);
+            c.h(L4, true);
+            c.v(L2, false);
+            c.h(L2, true);
+
+            c = c.west();
+            copy(c.north(), SOUTH, SOUTH);
+            c.xlut((LUT_SELF & ~LUT_OTHER) | LUT_Z);
+            c.ylut(~LUT_Z);
+            c.yi(SOUTH);
+            c.xi(SE);
+            c.c(XLUT);
+            c.wi(L4);
+            c.f(false);
+            c.t(TMUX_W_AND_FB);
+            c.v(L4, false);
+            c.h(L4, true);
+            c.v(L2, false);
+            c.h(L2, true);
+
+            c = c.west();
+            c.v(L4, false);
+            c.h(L4, true);
+            c.out(L4, true);
+            c.f(false);
+            c.b(false);
+            c.oe(NONE);
+            c.c(YLUT);
+            c.hwire(L4).west().drives(c.hwire(L4), false);
+            c.hwire(L4).east().drives(c.hwire(L4), false);
+
+            c = c.south();
+            c = c.south();
+            c.v(L4, false);
+            c.h(L4, true);
+            c.out(L4, true);
+            c.f(false);
+            c.b(false);
+            c.oe(NONE);
+            c.c(YLUT);
+            c.hwire(L4).west().drives(c.hwire(L4), false);
+            c.hwire(L4).east().drives(c.hwire(L4), false);
+
+            c = c.east();
+            c = c.east();
+            copy(c.south(), NORTH, NORTH);
+            c.xlut(((~LUT_SELF) & (~LUT_OTHER)) | LUT_Z);
+            c.ylut(LUT_Z);
+            c.yi(NORTH);
+            c.c(XLUT);
+            c.xi(NW);
+            c.wi(L4);
+            c.f(false);
+            c.t(TMUX_W_AND_FB);
+            c.v(L4, false);
+            c.h(L4, true);
+            c.v(L2, false);
+            c.h(L2, true);
+
+            c = c.west();
+            copy(c.south(), NORTH, NORTH);
+            c.xlut((LUT_SELF & LUT_OTHER) | LUT_Z);
+            c.ylut(LUT_Z);
+            c.yi(NORTH);
+            c.xi(NE);
+            c.c(XLUT);
+            c.wi(L4);
+            c.f(false);
+            c.t(TMUX_W_AND_FB);
+            c.v(L4, false);
+            c.h(L4, true);
+            c.v(L2, false);
+            c.h(L2, true);
+
+
+            // catch a rising transition
+            /*
+            c = c.west();
+            c.v(L2, false);
+            c.h(L2, true);
+            c.out(L2, true);
+            c.f(false);
+            c.b(false);
+            c.oe(NONE);
+            c.c(YLUT);
+            */
+            c.hwire(L2).west().drives(c.hwire(L2), false);
+            c.hwire(L2).east().drives(c.hwire(L2), false);
+
+
+
+            //////
+
+            c = at40k.cell(20,20);
+            c.yi(WEST);
+            c.ylut(LUT_SELF);
+            c.c(YLUT);
+            c.oe(H4);
+            c.h(L4, true);
+            c.b(false);
+            c.f(false);
+            c.out(L4);
+
+            c = at40k.cell(21,20);
+            c.c(YLUT);
+            c.oe(NONE);
+            c.h(L4, true);
+            c.b(false);
+            c.f(false);
+
+
+            c = at40k.cell(8,8);
+            c.f(true);
+            c.b(true);
+            c.xo(true);
+            c.xi(NE);
+            c.zi(L3);
+            c.wi(L0);
+            c.yi(NORTH);
+            c.oe(H4);
+            c.h(L0, true);
+            c.h(L2, true);
+            c.h(L4, true);
+            c.v(L1, true);
+            c.v(L3, true);
+            c.out(L0, true);
+            c.out(L1, true);
+            c.out(L2, true);
+            c.out(L3, true);
+            c.out(L4, true);
+            c.xo(true);
+            c.yo(true);
+            c.c(ZMUX);
+
+            at40k.cell(9,10).xo(true);
+            at40k.cell(9,10).yo(true);
+            at40k.cell(9,10).c(YLUT);
+            at40k.cell(9,10).b(false);
+
+            //for(int x=5; x<PIPELEN; x++) {
+            //at40k.cell(x,23).hwire(L0).drives(at40k.cell(x,23).hwire(L0).east());
+            //}
+
+            /*
+            at40k.cell(22,11).ylut(0xff);
+            at40k.cell(23,11).yi(L3);
+            //at40k.cell(23,11).yi(WEST);
+            //at40k.cell(23,11).xi(L1);
+            at40k.cell(23,11).ylut(0xAA);
+            at40k.iob_right(11, true).enableOutput(WEST);
+            at40k.cell(23,11).v(L3, true);
+            at40k.cell(23,11).yo(false);
+            //at40k.flush();
+            */
+            int vx=04;
+            int vv=23;
+            /*
+            System.out.println("correct: " + at40k.cell(19,15).hwire(L3) + " drives " + at40k.cell(20,15).hwire(L3));
+            System.out.println("correct: " + at40k.cell(15,15).hwire(L3) + " drives " + at40k.cell(19,15).hwire(L3));
+            System.out.println("correct: " + at40k.cell(11,15).hwire(L3) + " drives " + at40k.cell(15,15).hwire(L3));
+            System.out.println("correct: " + at40k.cell(07,15).hwire(L3) + " drives " + at40k.cell(11,15).hwire(L3));
+
+            at40k.cell(19,15).hwire(L3).drives(at40k.cell(20,15).hwire(L3), true);
+            at40k.cell(15,15).hwire(L3).drives(at40k.cell(19,15).hwire(L3), true);
+            at40k.cell(11,15).hwire(L3).drives(at40k.cell(15,15).hwire(L3), true);
+            at40k.cell(07,15).hwire(L3).drives(at40k.cell(11,15).hwire(L3), true);
+            */
+            //at40k.cell(05,vv).xlut(0xff);
+            //at40k.cell(05,vv).ylut(0xff);
+            /*
+            at40k.cell(vx,vv).c(YLUT);
+            at40k.cell(vx,vv).f(false);
+            at40k.cell(vx,vv).b(false);
+            at40k.cell(vx,vv).oe(NONE);
+            at40k.cell(vx,vv).v(L3, true);
+            at40k.cell(vx,vv).out(L3, true);
+            */
+            /*
+            at40k.cell(vx,15).v(L3, true);
+            at40k.cell(vx,15).h(L3, true);
+            at40k.cell(vx,19).vwire(L3).drives(at40k.cell(vx,15).vwire(L3), true);
+            at40k.cell(vx,23).vwire(L3).drives(at40k.cell(vx,19).vwire(L3), true);
+            */
+
+            //at40k.cell(5,23).ylut(0x00);
+            //at40k.cell(6,22).ylut(0xff);
+            //at40k.cell(22,11).ylut(0xff);
+            /*
+            At40k.Cell cell = at40k.cell(4, 16);
+            cell.xlut(0xff);
+            cell.ylut(0xff);
+            cell.b(false);
+            cell.f(false);
+            cell.c(XLUT);
+            cell.h(L3, true);
+            cell.v(L3, true);
+            cell.out(L3, true);
+            cell.oe(NONE);
+            */
+            //scan(at40k, cell, YLUT, true);
+            //scan(at40k, cell, YLUT, false);
+
+            //device.scanFPGA(true);
+
+            at40k.cell(10,10).f(true);
+            at40k.cell(10,10).c(ZMUX);
+
+            at40k.cell(8,7).xlut(LUT_SELF);
+            at40k.cell(8,7).xi(NW);
+
+            at40k.cell(7,8).xlut(LUT_SELF & LUT_Z);
+            at40k.cell(7,8).xi(SE);
+            at40k.cell(7,8).c(XLUT);
+            at40k.cell(7,8).f(false);
+            at40k.cell(7,8).b(false);
+            at40k.cell(7,8).t(TMUX_FB);
+            at40k.cell(7,8).xo(false);
+            System.out.println(at40k.cell(7,8).fb_relevant());
+
+            at40k.cell(6,13).xi(SE);
+            at40k.cell(6,13).c(ZMUX);
+            at40k.cell(6,13).xlut(LUT_SELF);
+            at40k.cell(6,13).ylut(LUT_OTHER);
+            at40k.cell(6,13).xo(false);
+            at40k.cell(6,13).yo(false);
+            at40k.cell(7,12).xi(SE);
+
+            for(int i=0; i<24; i++) {
+                at40k.iob_bot(i, true).enableOutput(NORTH);
+                at40k.iob_bot(i, false).enableOutput(NW);
+                at40k.cell(i, 0).xlut(0xff);
+                at40k.cell(i, 0).ylut(0xff);
+            }
+
+            device.flush();
+
+            Gui vis = new Gui(at40k, device);
+            Frame fr = new Frame();
+            fr.addKeyListener(vis);
+            fr.setLayout(new BorderLayout());
+            fr.add(vis, BorderLayout.CENTER);
+            fr.pack();
+            fr.setSize(900, 900);
+            vis.repaint();
+            fr.repaint();
+            fr.show();
+            synchronized(AtmelSerial.class) { AtmelSerial.class.wait(); }
+
+
+
+            Visualizer v = new Visualizer(at40k, device);
+            v.show();
+            v.setSize(1380, 1080);
+            At40k.Cell cell = at40k.cell(4, 23);
+
+            Image img = v.createImage(v.getWidth(), v.getHeight());
+            /*
+            int x = 1;
+            int y = 14;
+            cell = at40k.cell(x,y);
+            scan(at40k, cell, YLUT, true);
+            cell.c(YLUT);
+            cell.b(false);
+            cell.f(false);
+            cell.oe(NONE);
+            cell.ylut(0xff);
+            */
+            //int x = 5;
+            //int y = 11;
+
+            //selfTest(device, at40k, v);
+            System.out.println("save: " + AvrDrone.save + " of " + (AvrDrone.saveof*5));
+
+            at40k.iob_top(0, true).enableInput();
+            copy(at40k.cell(0, 23), NORTH, NORTH);
+            at40k.iob_bot(0, true).enableOutput(NORTH);
+
+            for(int i=0; i<10000; i++) {
+                v.refresh();
+                try { Thread.sleep(100); } catch (Exception e) { }
+            }
+            //cell.ylut(0x09);
+
+            //at40k.cell(0x01, 0x17).h(0, false);
+            //at40k.cell(0x01, 0x17).xi(NE);
+            //at40k.cell(0x01, 0x17).ylut((byte)0x55);
+
+            //at40k.cell(0x04, 0x17).xlut((byte)0x10);
+            //at40k.cell(0x04, 0x17).ylut((byte)0x10);
+            //at40k.cell(0x04, 0x17).yo(false);
+            //at40k.cell(0x04, 0x17).xo();
+
+            /*
+            at40k.cell(0x01, 0x17).xi(L0);
+            at40k.cell(0x01, 0x17).h(L0, true);
+            */
+            /*
+            at40k.cell(0x03, 0x17).xlut((byte)0x55);
+            at40k.cell(0x03, 0x17).ylut((byte)0x55);
+            at40k.cell(0x03, 0x17).yi(EAST);
+            at40k.cell(0x03, 0x17).ylut((byte)0x55);
+            at40k.cell(0x03, 0x17).yo(true);
+
+            at40k.cell(0x03, 0x17).f(false);
+            at40k.cell(0x03, 0x17).c(XLUT);
+            at40k.cell(0x03, 0x17).oe(NONE);
+            at40k.cell(0x03, 0x17).out(L0, true);
+
+            at40k.cell(0x02, 0x17).yi(EAST);
+            at40k.cell(0x02, 0x17).ylut((byte)0x55);
+            at40k.cell(0x02, 0x17).yo(false);
+
+            at40k.cell(0x01, 0x17).yi(EAST);
+            at40k.cell(0x01, 0x17).ylut((byte)0x55);
+            at40k.cell(0x01, 0x17).yo(false);
+
+            at40k.cell(0x01, 0x17).h(L0, true);
+            at40k.cell(0x01, 0x17).v(L0, false);
+            */
+            //at40k.cell(0x01, 0x17).yi(L0);
+            //at40k.cell(0x01, 0x17).xi(L0);
+            //at40k.cell(0x01, 0x17).ylut((byte)0x33);
+
+            /*
+            at40k.cell(0x03, 0x17).h(L0, true);
+            at40k.cell(0x03, 0x17).out(L0, true);
+            at40k.cell(0x03, 0x17).c(XLUT);
+            at40k.cell(0x03, 0x17).f(false);
+            */
+            /*
+            at40k.cell(0x01, 0x17).xin(4);
+            at40k.cell(0x01, 0x17).yin(4);
+            at40k.cell(0x01, 0x16).ylut((byte)0x00);
+            device.mode4(2, 0x17, 0x01, 0);
+
+            for(int i=0; i<10; i++) {
+                Thread.sleep(3000);
+                System.out.println("tick");
+                //at40k.cell(0x01, 0x17).xlut((byte)0xFF);
+                at40k.cell(0x00, 0x17).ylut((byte)0x00);
+                device.flush();
+                Thread.sleep(3000);
+                System.out.println("tick");
+                //at40k.cell(0x01, 0x17).xlut((byte)0x00);
+                at40k.cell(0x00, 0x17).ylut((byte)0xFF);
+                device.flush();
+            }
+            */
+
+
+            /*
+            at40k.iob_top(0, true).output(0);
+            at40k.iob_top(0, true).oe(false);
+            at40k.iob_top(0, true).pullup();
+            device.flush();
+            Thread.sleep(3000);
+
+            Log.info(AtmelSerial.class, "issuing command");
+            at40k.iob_top(1, true).pulldown();
+            device.flush();
+            */
+            Log.info(AtmelSerial.class, "done");
             System.exit(0);
         } catch (Exception e) { e.printStackTrace(); }
     }
 
+    public static void scan(At40k dev, At40k.Cell cell, int source, boolean setup) {
+        if (setup) {
+            if (source != NONE) cell.c(source);
+            if (cell.b()) cell.b(false);
+            if (cell.f()) cell.f(false);
+        }
+        if (cell.out(L3)!=setup) cell.out(L3, setup);
+        if (cell.vx(L3)!=setup) cell.v(L3, setup);
+
+        At40k.SectorWire sw = cell.vwire(L3);
+        //System.out.println("wire is: " + sw);
+
+        if (sw.row > (12 & ~0x3) && sw.north()!=null && sw.north().drives(sw))
+            sw.north().drives(sw, false);
+        while(sw.row > (12 & ~0x3) && sw.south() != null) {
+            //System.out.println(sw + " -> " + sw.south());
+            if (sw.drives(sw.south())!=setup) sw.drives(sw.south(), setup);
+            sw = sw.south();
+        }
+        if (sw.row < (12 & ~0x3) && sw.south() != null && sw.south().drives(sw))
+            sw.north().drives(sw, false);
+        while(sw.row < (12 & ~0x3) && sw.north() != null) {
+            //System.out.println(sw + " -> " + sw.north());
+            if (sw.drives(sw.north())!=setup) sw.drives(sw.north(), setup);
+            sw = sw.north();
+        }
+
+        //cell = dev.cell(19, 15);
+        cell = dev.cell(cell.col, 15);
+        /*
+        System.out.println("cell is " + cell);
+        cell.xlut(0xff);
+        cell.ylut(0xff);
+        cell.b(false);
+        cell.f(false);
+        cell.c(XLUT);
+        cell.out(L3, true);
+        cell.oe(NONE);
+        */
+        if (cell.hx(L3) != setup) cell.h(L3, setup);
+        if (cell.vx(L3) != setup) cell.v(L3, setup);
+        sw = cell.hwire(L3);
+
+        if (sw.west()!=null && sw.west().drives(sw)) { sw.west().drives(sw, false); }
+        while(sw.east() != null) {
+            //System.out.println(sw + " -> " + sw.east());
+            if (sw.drives(sw.east())!=setup) sw.drives(sw.east(), setup);
+            sw = sw.east();
+        }
+
+    }
+
+    public static void copy(At40k.Cell c, int xdir, int ydir) {
+        switch(xdir) {
+            case NW: case NE: case SW: case SE: {
+                c.xi(xdir);
+                c.xlut(LUT_SELF);
+                break;
+            }
+            case NORTH: case SOUTH: case EAST: case WEST: {
+                c.yi(xdir);
+                c.xlut(LUT_OTHER);
+                break;
+            }
+            case NONE: break;
+            default: throw new Error();
+        }
+        switch(ydir) {
+            case NW: case NE: case SW: case SE: {
+                c.xi(ydir);
+                c.ylut(LUT_OTHER);
+                break;
+            }
+            case NORTH: case SOUTH: case EAST: case WEST: {
+                c.yi(ydir);
+                c.ylut(LUT_SELF);
+                break;
+            }
+            case NONE: break;
+            default: throw new Error();
+        }
+        c.xo(false);
+        c.yo(false);
+    }
+    public static String hex(int x) {
+        return Long.toString(x & 0xffffffffL, 16);
+    }
+
+    public static void handshaker(At40k.Cell cell) {
+        cell.xlut(0x22);
+        cell.ylut(0x71);
+        cell.c(XLUT);
+        cell.f(false);
+        cell.t(false, false, true);
+    }
+
+    public static class Visualizer extends Frame implements KeyListener, MouseMotionListener, MouseListener {
+        public static final int WIDTH = 40;
+        public static final int HEIGHT = 40;
+        public static final int LW = 15;
+        public static final int LH = 15;
+        public static final Color RED  = new Color(0xaa, 0x55, 0x55);
+        public static final Color BLUE = new Color(0x55, 0x55, 0xaa);
+        private final At40k dev;
+        private final AvrDrone drone;
+        int selx = -1;
+        int sely = -1;
+        public Visualizer(final At40k dev, final AvrDrone drone) {
+            this.dev = dev;
+            this.drone = drone;
+            show();
+            addMouseMotionListener(this);
+            addMouseListener(this);
+            addKeyListener(this);
+            new Thread() {
+                public void run() {
+                    try {
+                        while(true) {
+                            Thread.sleep(500);
+                            if (!enabled) continue;
+                            /*
+                            At40k.Cell cell = dev.cell(21, 22);
+                            cell.xlut(0xff);
+                            cell.ylut(0xff);
+                            */
+                            keyPressed(null);
+                            /*
+                            cell.xlut(0x00);
+                            cell.ylut(0x00);
+                            */
+                        }
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                }
+            }.start();
+        }
+        public boolean enabled = false;
+        public void mouseClicked(MouseEvent e) { }
+        public void mouseEntered(MouseEvent e) { }
+        public void mouseExited(MouseEvent e) { }
+        public void mouseReleased(MouseEvent e) {
+        }
+        public void keyTyped(KeyEvent k) {
+        }
+        public void keyReleased(KeyEvent k) {
+        }
+        public void keyPressed(KeyEvent keyevent) {
+            boolean scan = false;
+            switch(keyevent==null ? '_' : keyevent.getKeyChar()) {
+                case '1': {
+                    if (selx==-1 || sely==-1) break;
+                    At40k.Cell cell = dev.cell(selx, sely);
+                    cell.xlut(0xff);
+                    cell.ylut(0xff);
+                    drawCell(getGraphics(), selx, sely);
+                    drone.flush();
+                    break;
+                }
+                case 'i': {
+                    System.out.println("interrupt_count: " + drone.readCount());
+                    break;
+                }
+                case 'x': {
+                    masterx+=2;
+                    if (mullers) {
+                        if (masterx <= 22) {
+                            int mx = masterx;
+                            System.out.println("low => " + mx);
+                            copy(dev.cell(mx, yofs-2), NORTH, NORTH);
+                            copy(dev.cell(mx, yofs-3), NORTH, NORTH);
+                            //dev.cell(mx, yofs-3).ylut(~dev.cell(mx, yofs-3).ylut());
+                            //dev.cell(mx, yofs-3).xlut(~dev.cell(mx, yofs-3).xlut());
+                        } else {
+                            int mx = 23-(masterx-23);
+                            System.out.println("high => " + mx);
+                            copy(dev.cell(mx, yofs), NW, NW);//NORTH, NORTH);
+                            copy(dev.cell(mx, yofs-1), NORTH, NORTH);
+                            //for(int x=mx-1; x>=1; x--)
+                            //copy(dev.cell(x, yofs), EAST, EAST);
+                            for(int y=yofs+1; y<=23; y++)
+                                copy(dev.cell(1, y), SOUTH, SOUTH);
+                            //dev.cell(mx, yofs-1).ylut(~dev.cell(mx, yofs-1).ylut());
+                            //dev.cell(mx, yofs-1).xlut(~dev.cell(mx, yofs-1).xlut());
+                        }
+                    } else {
+                        if (masterx <= 22) {
+                            int mx = masterx;
+                            System.out.println("low => " + mx);
+                            copy(dev.cell(mx, yofs-2), SOUTH, SOUTH);
+                            copy(dev.cell(mx, yofs-3), NORTH, NORTH);
+                            dev.cell(mx, yofs-3).ylut(~dev.cell(mx, yofs-3).ylut());
+                            dev.cell(mx, yofs-3).xlut(~dev.cell(mx, yofs-3).xlut());
+                        } else {
+                            int mx = 23-(masterx-23);
+                            System.out.println("high => " + mx);
+                            copy(dev.cell(mx, yofs), SOUTH, SOUTH);
+                            /*
+                            copy(dev.cell(mx, yofs-1), NORTH, NORTH);
+                            */
+                            copy(dev.cell(mx, yofs-1), NORTH, SW);
+                            boolean left = true;
+                            At40k.Cell lc = null;
+                            for(int k=0; k<10; k++) {
+                                int y = yofs-2-(k*2);
+                                copy(dev.cell(left?(mx-1):mx, y),        SOUTH, left?NE:NW);
+                                copy(lc = dev.cell(left?(mx-1):mx, y-1), NORTH, left?SE:SW); 
+                                left = !left;
+                            }
+                            copy(lc, NORTH, NORTH);
+
+                            //for(int x=mx-1; x>=1; x--)
+                            //copy(dev.cell(x, yofs), EAST, EAST);
+                            //for(int y=yofs+1; y<=23; y++)
+                            //copy(dev.cell(1, y), SOUTH, SOUTH);
+
+                            if (mx<21) {
+                                dev.cell(mx+2, yofs).ylut(0x00);
+                                dev.cell(mx+2, yofs).xlut(0x00);
+                            }
+
+                            /*
+                            dev.cell(mx, yofs-1).ylut(~LUT_Z);
+                            dev.cell(mx, yofs-1).xlut(LUT_Z);
+                            loopback(dev.cell(mx, yofs-1), YLUT);
+                            */
+                            dev.cell(mx, yofs).ylut(~LUT_SELF);
+                            dev.cell(mx, yofs).xlut(~LUT_OTHER);
+                        }
+                    }
+                    break;
+                }
+                case ' ': {
+                    //enabled = !enabled;
+                    scan = true;
+                    break;
+                }
+                case '4': {
+                    //enabled = !enabled;
+                    try {
+                        for(int cap=0; cap<15; cap++) {
+                            drain(dev, drone);
+                            try { Thread.sleep(100); } catch (Exception e) { }
+                            //showit(dev, drone, this);
+                            fill(dev, drone, cap);
+                            drone.readCount();
+                            long now = System.currentTimeMillis();
+                            try { Thread.sleep(4000); } catch (Exception e) { }
+                            int count = drone.readCount();
+                            long now2 = System.currentTimeMillis();
+                            System.out.println(cap + " ,  " + (((float)count * (2*2*2*2*2*2*2*2*2*1000))/(now2-now)));
+                        }
+                    } catch (Exception e) { e.printStackTrace(); }
+                    break;
+                }
+                case 'C': {
+                    if (selx==-1 || sely==-1) break;
+                    At40k.Cell cell = dev.cell(selx, sely);
+                    cell.ylut(0xB2);
+                    drawCell(getGraphics(), selx, sely);
+                    break;
+                }
+                case '0': {
+                    if (selx==-1 || sely==-1) break;
+                    At40k.Cell cell = dev.cell(selx, sely);
+                    cell.xlut(0x00);
+                    cell.ylut(0x00);
+                    drawCell(getGraphics(), selx, sely);
+                    drone.flush();
+                    break;
+                }
+            } 
+            if (!scan) return;
+            showit(dev, drone, this);
+        }
+        public void mousePressed(MouseEvent e) {
+            final At40k.Cell cell = dev.cell(selx, sely);
+            if (cell==null) return;
+            final int old = cell.c();
+            AvrDrone.ByteCallback bc = new AvrDrone.ByteCallback() {
+                    public void call(byte b) throws Exception {
+                        boolean y = (b & 0x80) != 0;
+                        //cell.c(old);
+                        Graphics g = getGraphics();
+                        g.setFont(new Font("sansserif", Font.BOLD, 14));
+                        g.setColor(Color.white);
+                        //g.drawString("X=0", left(cell) + 10, top(cell) + 20);
+                        //g.drawString("X=1", left(cell) + 10, top(cell) + 20);
+                        //g.setColor(Color.white);
+                        //g.drawString("Y=0", left(cell) + 8, top(cell) + 35);
+                        //g.drawString("Y=1", left(cell) + 8, top(cell) + 35);
+                        //g.setColor(RED);
+                        //g.drawString("X="+(x?"1":"0"), left(cell) + 10, top(cell) + 20);
+                        String v = (cell.c()==YLUT ? "Y" : cell.c()==XLUT ? "X" : "C");
+                        g.drawString(v+"="+(y?"0":"1"), left(cell) + 8, top(cell) + 35);
+                        g.setColor(BLUE);
+                        g.drawString(v+"="+(y?"1":"0"), left(cell) + 8, top(cell) + 35);
+                    } };
+            scan(dev, cell, NONE, true);
+            drone.readBus(bc);
+            //scan(dev, cell, XLUT, true);
+            //boolean x = (drone.readBus() & 0x80) != 0;
+            scan(dev, cell, NONE, false);
+        }
+
+        public void mouseMoved(MouseEvent e) {
+            int x = e.getX();
+            int y = e.getY();
+            if (selx >= 0 && selx < 24 && sely >= 0 && sely < 24) {
+                int cx = selx;
+                int cy = sely;
+                At40k.Cell cell = dev.cell(cx, cy);
+                selx = -1;
+                sely = -1;
+                /*
+                drawCell(getGraphics(), cx, cy);
+                drawSector(getGraphics(), dev.cell(cx, cy).sector());
+                */
+            }
+            selx = (x-20)/(WIDTH+2);
+            sely = (23 - (y-20)/(HEIGHT+2))+1;
+            /*
+            At40k.Cell cell = dev.cell(selx, sely);
+            if (selx >= 0 && selx < 24 && sely >= 0 && sely < 24) {
+                drawCell(getGraphics(), selx, sely);
+                drawSector(getGraphics(), dev.cell(selx, sely).sector());
+            }
+            */
+        }
+        public void mouseDragged(MouseEvent e) { mousePressed(e); }
+        public void paint(Graphics g) {
+            System.out.println("paintall");
+            g.setColor(Color.white);
+            g.fillRect(0, 0, getWidth(), getHeight());
+            g.setFont(new Font("sansserif", Font.BOLD, 24));
+            for(int x=0; x<24; x++)
+                for(int y=0; y<24; y++)
+                    drawCell(g,x,y);
+            for(int x=0; x<=23; x+=4)
+                for(int y=23; y>=0; y-=4) 
+                    drawSector(g, dev.cell(x, y).sector());
+            /*
+            g.setColor(BLUE);
+            g.drawString("Ready", (5*(WIDTH+2))+20, 40);
+            g.setColor(RED);
+            g.drawString("Send",  (3*(WIDTH+2))+20, 40);
+            g.setColor(BLUE);
+            */
+            refresh();
+        }
+        public void refresh() {
+            Graphics g = getGraphics();
+            /*
+            int data = drone.readBus() & 0xff;
+            for(int i=0; i<8; i++) {
+                g.setColor((data & (1<<i))==0 ? Color.black : Color.green);
+                g.drawString("D"+i,  (24*(WIDTH+2))+20, ((23-(i+7))*(HEIGHT+2))+60-HEIGHT/2);
+            }
+            */
+        }
+        public static int left(At40k.Cell cell) { return (cell.col)   *(WIDTH+2)+20; }
+        public static int top(At40k.Cell cell)  { return (23-cell.row)*(HEIGHT+2)+60; }
+        public void drawSector(Graphics g, At40k.Sector sector) {
+            g.setColor(Color.gray);
+            ((Graphics2D)g).setStroke(new BasicStroke(1));
+            int px = ((sector.col)*(WIDTH+2))+20-1;
+            int py = ((23-(sector.row+3))*(HEIGHT+2))+60-1;
+            g.drawRect(px, py, (WIDTH+2)*4+2, (HEIGHT+2)*4+2);
+            /*
+            for(int dir=0; dir<2; dir++) {
+                boolean h = dir==0;
+                for(int y=h?sector.row:sector.col; y<(h?sector.row+4:sector.col+4); y++)
+                    for(int plane=0; plane<=4; plane++) {
+                        At40k.Cell cell      = h ? dev.cell(sector.col,   y) : dev.cell(y, sector.row);
+                        At40k.Cell cell_east = h ? dev.cell(sector.col-1, y) : dev.cell(y, sector.row-1);
+                        At40k.Cell cell_west = h ? dev.cell(sector.col+4, y) : dev.cell(y, sector.row+4);
+                        boolean draw = false;
+                        if (h) {
+                            if (cell_east!=null &&
+                                (cell_east.hwire(plane).drives(cell.hwire(plane)) ||
+                                 cell_east.hwire(plane).drives(cell.hwire(plane))))
+                                draw = true;
+                            if (cell_west!=null &&
+                                (cell_west.hwire(plane).drives(cell.hwire(plane)) ||
+                                 cell_west.hwire(plane).drives(cell.hwire(plane))))
+                                draw = true;
+                        } else {
+                            if (cell_east!=null &&
+                                (cell_east.vwire(plane).drives(cell.vwire(plane)) ||
+                                 cell_east.vwire(plane).drives(cell.vwire(plane))))
+                                draw = true;
+                            if (cell_west!=null &&
+                                (cell_west.vwire(plane).drives(cell.vwire(plane)) ||
+                                 cell_west.vwire(plane).drives(cell.vwire(plane))))
+                                draw = true;
+                        }
+                        if (!draw)
+                            for(int x=h?sector.col:sector.row; x<(h?sector.col+4:sector.row+4); x++)
+                                if (((h ? dev.cell(x,y).hx(plane) : dev.cell(y,x).vx(plane))) ||
+                                    (h?dev.cell(x,y).out(plane):dev.cell(y,x).out(plane)))
+                                    draw = true;
+                        if (draw) {
+                            g.setColor(new Color(0xff, 0x00, 0xff));
+                            if (h) {
+                                g.drawLine(left(cell),
+                                           top(cell)+3,
+                                           left(cell) + 4*(WIDTH+2),
+                                           top(cell)+3
+                                           );
+                            } else {
+                                g.drawLine(left(cell)+3,
+                                           top(cell) + (HEIGHT+2),
+                                           left(cell)+3,
+                                           top(cell) - 3*(HEIGHT+2)
+                                           );
+                            }
+                        }
+                    }
+            }
+            */
+        }
+        public void drawCell(Graphics g, int cx, int cy) {
+            int x = (cx*(WIDTH+2))+20;
+            int y = ((23-cy)*(HEIGHT+2))+60;
+            if (g.getClipBounds() != null && !g.getClipBounds().intersects(new Rectangle(x, y, x+WIDTH, y+HEIGHT))) return;
+            drawCell(g, cx, cy, Color.white);
+        }
+        public void drawCell(Graphics g, int cx, int cy, Color bg) {
+            int x = (cx*(WIDTH+2))+20;
+            int y = ((23-cy)*(HEIGHT+2))+60;
+
+            //System.out.println("drawcell " + cx + "," + cy);
+            At40k.Cell cell = dev.cell(cx, cy);
+            g.setColor(bg);
+            g.fillRect(x, y, WIDTH, HEIGHT);
+
+            g.setColor((selx==cx && sely==cy) ? Color.red : Color.black);
+            g.drawRect(x, y, WIDTH, HEIGHT);
+
+            //g.setColor((selx==cx && sely==cy) ? Color.red : Color.gray);
+            //g.drawRect(x+(WIDTH-(LW*2))/2-1,    y+(HEIGHT-LW)/2-1, LW*2+1, LH+1);
+
+            //g.setColor(RED);
+            //g.fillRect(x+(WIDTH-(LW*2))/2,    y+(HEIGHT-LW)/2, LW,   LH);
+            //g.setColor(Color.white);
+            //g.drawString("1", x+(WIDTH-(LW*2))/2,    y+(HEIGHT-LW)/2);
+
+            //g.setColor(BLUE);
+            //g.fillRect(x+(WIDTH-(LW*2))/2+LW, y+(HEIGHT-LW)/2, LW,   LH);
+            //g.setColor(Color.white);
+            //g.drawString("0", x+(WIDTH-(LW*2))/2+LW,    y+(HEIGHT-LW)/2);
+
+            /*
+              g.setColor(BLUE);
+            ((Graphics2D)g).setStroke(new BasicStroke((float)1));
+            switch(cell.yi()) {
+                case NORTH: g.drawLine(x+WIDTH/2+5,  y-10,        x+WIDTH/2+5, y+HEIGHT/2); break;
+                case SOUTH: g.drawLine(x+WIDTH/2-5,  y+HEIGHT+10, x+WIDTH/2-5, y+HEIGHT/2); break;
+                case EAST:  g.drawLine(x+WIDTH+10, y+HEIGHT/2+5,  x+WIDTH/2, y+HEIGHT/2+5); break;
+                case WEST:  g.drawLine(x-10,       y+HEIGHT/2-5,  x+WIDTH/2, y+HEIGHT/2-5); break;
+                case NONE:  break;
+            }
+            g.setColor(RED);
+            ((Graphics2D)g).setStroke(new BasicStroke((float)1));
+            switch(cell.xi()) {
+                case NW: g.drawLine(x-10+3,       y-10,        x+WIDTH/2+3, y+HEIGHT/2); break;
+                case SW: g.drawLine(x-10-3,       y+HEIGHT+10, x+WIDTH/2-3, y+HEIGHT/2); break;
+                case NE: g.drawLine(x+WIDTH+10+3, y-10,        x+WIDTH/2+3, y+HEIGHT/2); break;
+                case SE: g.drawLine(x+WIDTH+10-3, y+HEIGHT+10, x+WIDTH/2-3, y+HEIGHT/2); break;
+                case NONE:  break;
+            }
+            ((Graphics2D)g).setStroke(new BasicStroke(1));
+            */
+            /*
+            if (selx==cx && sely==cy) {
+                int xp = 23 * (WIDTH+2) + 100;
+                int yp = 100;
+                g.setColor(Color.white);
+                g.fillRect(xp, yp, 300, 1000);
+                g.setColor(Color.black);
+                g.drawString("Cell " + cx + "," + cy,       xp, (yp+=15));
+                //g.drawString("X-Lut: " + bin8(cell.xlut()), xp, (yp+=15));
+                g.drawString("X-Lut: " + cell.printXLut(), xp, (yp+=15));
+                //g.drawString("Y-Lut: " + bin8(cell.ylut()), xp, (yp+=15));
+                g.drawString("Y-Lut: " + cell.printYLutX(), xp, (yp+=15));
+            }
+            */
+            if ((cell.ylut()&0xff)==0xff && (cell.xlut()&0xff)==0xff) {
+                g.setColor(new Color(0x00, 0x00, 0xff));
+                g.drawString("1", left(cell) + 12, top(cell) + 30);
+            }
+            if ((cell.ylut()&0xff)==0x00 && (cell.xlut()&0xff)==0x00) {
+                g.setColor(new Color(0x00, 0x00, 0xff));
+                g.drawString("0", left(cell) + 12, top(cell) + 30);
+            }
+            if ((cell.ylut()&0xff)==0xB2) {
+                //System.out.println("muller @ " + cell);
+                //g.setColor(RED);
+                //g.drawString("X="+(x?"1":"0"), left(cell) + 10, top(cell) + 20);
+                g.setColor(new Color(0x00, 0xaa, 0x00));
+                g.drawString("C", left(cell) + 12, top(cell) + 30);
+            }
+
+        }
+    }
+
+    private static String pad(int i, String s) { if (s.length()>i) return s; return "0"+pad((i-1),s); }
+    public static String bin8(byte b) {
+        int n = b & 0xff;
+        String ret = "";
+        for(int i=7; i>=0; i--)
+            ret += (n & (1<<i))==0 ? "0" : "1";
+        return ret;
+    }
+
+    public static void selfTest(AvrDrone device, At40k at40k, Visualizer v) {
+        /*
+            int fail = 0;
+            long now = System.currentTimeMillis();
+            for(int x=0; x<24; x++)
+                for(int y=0; y<24; y++) {
+                    At40k.Cell cell = at40k.cell(x,y);
+                    scan(at40k, cell, YLUT, true);
+                    //v.paint(img.getGraphics());
+                    //v.getGraphics().drawImage(img, 0, 0, null);
+                    cell.ylut(0xff);
+                    boolean a = (device.readBus() & 0x80)!=0;
+                    cell.ylut(0x00);
+                    boolean b = (device.readBus() & 0x80)!=0;
+                    if (a & !b) {
+                        //System.out.println("pass " + x+","+y);
+                        Graphics g = v.getGraphics();
+                        g.setColor(Color.green);
+                        g.drawString("pass", v.left(cell) + 10, v.top(cell) + 20);
+                    } else {
+                        System.out.println("FAIL!!!! " + x+","+y+" => " + a + " " + b);
+                        fail++;
+                        Graphics g = v.getGraphics();
+                        g.setColor(Color.red);
+                        g.drawString("FAIL", v.left(cell) + 10, v.top(cell) + 20);
+                    }
+                    scan(at40k, cell, YLUT, false);
+                }
+
+            System.out.println("failures: " + fail);
+            System.out.println("scan time: " + (System.currentTimeMillis()-now) + "ms");
+        */
+    }
+    
+    public static void bounce(At40k.Cell cell, int xi, int yi) {
+        cell.xlut((byte)0xCC);
+        cell.ylut((byte)0xCC);
+        cell.xi(xi);
+        cell.yi(yi);
+        cell.xo(false);
+        cell.yo(false);
+    }
+    public static void muller(At40k.Cell cell, int xi, int yi) {
+        cell.ylut(0xB2);
+        cell.c(YLUT);
+        cell.f(false);
+        cell.t(false, false, true);
+        cell.xi(xi);
+        cell.yi(yi);
+        cell.yo(false);
+        cell.xo(false);
+    }
+
+    /** watches for a rising/falling edge on Yin, emits a pulse on Xout */
+    public static void pulse_detect(At40k.Cell c, int in, boolean falling) {
+        c.ylut(0x00);
+        c.xlut(0x00);
+        switch(in) {
+            case NW: case NE: case SW: case SE: {
+                c.xi(in);
+                loopback(c, XLUT);
+                if (!falling) c.ylut(lutSwap(0x0C)); /* x & !z */
+                else          c.ylut(lutSwap(0x30)); /* !x & z */
+                c.xlut(LUT_SELF);
+                break;
+            }
+            case NORTH: case SOUTH: case EAST: case WEST: {
+                c.yi(in);
+                loopback(c, YLUT);
+                if (!falling) c.xlut(0x0C); /* y & !z */
+                else          c.xlut(0x30); /* !y & z */
+                c.ylut(LUT_SELF);
+                break;
+            }
+            default: throw new Error();
+        }
+    }
+
+    /** watches for a pulse on Xin, copies value of Yin */
+    public static void pulse_copy(At40k.Cell cell, int xi, int yi, boolean invert) {
+        loopback(cell, YLUT);
+        if (!invert) cell.ylut(0xB8);   /* yo = x ?  yi : z => 1011 1000 */
+        else         cell.ylut(0x74);   /* yo = x ? !yi : z => 0111 0100 */
+        if (!invert) cell.xlut(lutSwap(0xB8));   /* yo = x ?  yi : z => 1011 1000 */
+        else         cell.xlut(lutSwap(0x74));   /* yo = x ? !yi : z => 0111 0100 */
+        cell.xi(xi);
+        cell.yi(yi);
+    }
+
+    public static void loopback(At40k.Cell cell, int cin) {
+        cell.f(false);
+        cell.b(false);
+        cell.t(false, false, true);
+        cell.yo(false);
+        cell.xo(false);
+        cell.c(cin);
+    }
+    public static void doit(At40k at40k, AvrDrone device) throws Exception {
+
+        At40k.Cell led = at40k.cell(1, 23);
+        led.v(L2, true);
+        led.h(L2, false);
+        led.yi(L2);
+        led.ylut(~LUT_SELF);
+        led.xlut(LUT_SELF);
+        led.yo(false);
+
+        At40k.Cell c = at40k.cell(1, 22);
+        c.out(L1, true);
+        c.out(L0, true);
+        c.oe(V4);
+        c.ylut(0xff);
+        c.h(L1, true);
+        c.h(L0, false);
+
+        c.v(L0, /*false*/true);
+
+        c.v(L1, true);
+        c.f(false);
+        c.b(false);
+        c.c(YLUT);
+
+        for(int i=0; i<4; i++) at40k.cell(i, 20).h(L0, false);
+        At40k.Cell z = at40k.cell(1, 20);
+        z.out(L0, true);
+        z.xlut(0xff);
+        z.c(XLUT);
+        z.yi(L0);
+        z.ylut(~LUT_SELF);
+        z.v(L0, true);
+        //z.h(L0, true);
+        z.h(L0, false);
+        z.f(false);
+        z.b(false);
+        z.hwire(L0).east().drives(z.hwire(L0), false);
+        z.hwire(L1).east().drives(z.hwire(L1), false);
+        z.vwire(L0).south().drives(z.vwire(L0), false);
+        z.vwire(L1).south().drives(z.vwire(L1), false);
+        z.oe(H4);
+
+        z = at40k.cell(0, 20);
+        z.oe(NONE);
+        z.out(L0, true);
+        z.out(L1, true);
+        z.out(L2, true);
+        //z.out(L3, true);
+        z.out(L4, true);
+        z.h(L0, true);
+        z.h(L1, true);
+        z.h(L2, true);
+        //z.h(L3, true);
+        z.h(L4, true);
+        z.f(false);
+        z.b(false);
+        z.yi(EAST);
+        z.ylut(LUT_SELF);
+        z.c(YLUT);
+
+        for(int y=20; y<=22; y++)
+            for(int x=2; x<=5; x++) {
+                c = at40k.cell(x, y);
+                copy(c, NW, WEST);
+            }
+
+        //c = at40k.cell(2, 22);
+        //c.h(L0, true);
+        //c.yi(L0);
+
+        c = at40k.cell(1, 21);
+        c.v(L0, true);
+        c.v(L2, true);
+        c.yi(L0);
+        c.out(L2, true);
+        c.ylut(LUT_SELF);
+        c.c(YLUT);
+        c.b(false);
+        c.f(false);
+        c.oe(NONE);
+        c.yo(false);
+
+        
+
+        c = at40k.cell(13, 22);
+        c.xlut(LUT_OTHER | 0xF0);
+        c.c(XLUT);
+        c.t(false, false, true);
+        c.b(false);
+        c.f(false);
+        c.ylut(0xF0);
+        c.yi(EAST);
+        c.yo(false);
+        /*
+        // this gate detects a rising edge on its Xin (delayed copy on Yin); when viewed, it inverts its state
+        c = at40k.cell(14, 22);
+        c.ylut(0x00);
+        c.c(XLUT);
+        c.f(false);
+        c.b(false);
+        c.t(false, false, true);
+        c.xi(SE);
+        c.yi(SOUTH);
+        c.yo(false);
+        c.xo(false);
+        c.ylut(0xA6); // (x & !z) ? ~y : y
+        c.xlut(LUT_SELF); 
+
+        c = at40k.cell(14, 20);
+        c.ylut(LUT_OTHER);
+        c.xi(NE);
+        c = at40k.cell(14, 21);
+        c.ylut(LUT_SELF);
+        c.xi(SOUTH);
+
+        c = at40k.cell(13, 22);
+        c.xlut(0x00);
+        c.xlut(LUT_OTHER);// | 0xF0);
+*/
+        //c = at40k.cell(13, 22);
+        //copy(c, NW, EAST);
+        /*
+        c.ylut(0x00);
+        c.c(YLUT);
+        c.f(false);
+        c.b(false);
+        c.t(false, false, true);
+        c.xi(SE);
+        c.yi(NORTH);
+        c.yo(false);
+        c.xo(false);
+        c.ylut(0x54);  // (x || z) & !y
+        */
+
+        /*        
+        c = at40k.cell(2, 21);
+        c.ylut(0x00);
+        c.c(YLUT);
+        c.f(false);
+        c.b(false);
+        c.t(false, false, true);
+        c.xi(SE);
+        c.yi(WEST);
+        c.yo(false);
+        c.xo(false);
+        c.ylut(0xE8);
+ 
+       //at40k.cell(2, 21).xlut(0xF0);
+
+        at40k.cell(3, 22).ylut(LUT_OTHER);
+        at40k.cell(3, 22).xi(SW);
+        */
+        //at40k.iob_top(5, true).enableOutput(SOUTH);
+        //at40k.iob_top(5, false).enableOutput(SE);
+    }
+
+    public static int yofs = mullers ? 19 : 22;
+    public static void counter(At40k at40k, AvrDrone device) throws Exception {
+        // watch for rising edge from south, emit pulse on Xout (to NE)
+        //copy(at40k.cell(16,23), SW, WEST);
+        
+        for(int x=22; x>=1; x-=2) {
+            pulse_detect(at40k.cell(x, yofs), SE,      false);
+            pulse_detect(at40k.cell(x, yofs-1), EAST,    true);
+            pulse_copy(at40k.cell(x-1, yofs), SE, SOUTH, false);
+            pulse_copy(at40k.cell(x-1, yofs-1), NE, NORTH, true);
+
+            //pulse_detect(at40k.cell(15, 22), NORTH, false);
+            //pulse_detect(at40k.cell(16, 22), NW,    true);
+            //pulse_copy(at40k.cell(16, 21), NW, WEST, false);
+            //pulse_copy(at40k.cell(15, 21), NE, EAST, true);
+        }
+        for(int x=23; x>1; x-=2) {
+            pulse_detect(at40k.cell(x-1, yofs-2), SW,    false);
+            pulse_detect(at40k.cell(x-1, yofs-3), WEST,  true);
+            pulse_copy(at40k.cell(x, yofs-2), SW, SOUTH, false);
+            pulse_copy(at40k.cell(x, yofs-3), NW, NORTH, true);
+
+            //pulse_detect(at40k.cell(15, 22), NORTH, false);
+            //pulse_detect(at40k.cell(16, 22), NW,    true);
+            //pulse_copy(at40k.cell(16, 21), NW, WEST, false);
+            //pulse_copy(at40k.cell(15, 21), NE, EAST, true);
+        }
+        copy(at40k.cell(1, yofs-2), SOUTH, SOUTH);
+        copy(at40k.cell(1, yofs-3), NORTH, NORTH);
+        at40k.cell(1, yofs-3).ylut(~at40k.cell(1, yofs-3).ylut());
+        at40k.cell(1, yofs-3).xlut(~at40k.cell(1, yofs-3).xlut());
+
+        copy(at40k.cell(23, yofs), SOUTH, SOUTH);
+        copy(at40k.cell(23, yofs-1), SOUTH, SOUTH);
+
+        for(int i=23; i>yofs; i--) copy(at40k.cell(1, i), SOUTH, SOUTH);
+
+        //at40k.iob_top(1, true).slew(SLOW);
+        //at40k.iob_top(1, false).slew(SLOW);
+
+    }
+    public static void fill(At40k at40k, AvrDrone device, int num) throws Exception {
+        //muller(at40k.cell(PIPELEN,22), NE, WEST);
+        At40k.Cell a = at40k.cell(10,22);
+        At40k.Cell b = at40k.cell(11,22);
+        a.ylut(0x00);
+        for(int i=0; i<num; i++) {
+            //System.out.println(i);
+            b.lut(0xff, 0xff);
+            device.flush();
+            try { Thread.sleep(1); } catch (Exception e) { }
+            b.lut(0x00, 0x00);
+            device.flush();
+            try { Thread.sleep(1); } catch (Exception e) { }
+        }
+        b.ylut(0xB2);
+        a.ylut(0xB2);
+    }
+    public static void showit(At40k dev, AvrDrone drone, final Visualizer vis) {
+        final long then = System.currentTimeMillis();
+        final Graphics g = vis.getGraphics();
+        g.setFont(new Font("sansserif", Font.BOLD, 24));
+        final Color red = new Color(0xff, 0x99, 0x99);
+        final Color green = new Color(0x99, 0xff, 0x99);
+        for(int xx=0; xx<=22; xx++) {
+            for(int yy=23; yy>=0; yy--) {
+                //for(int xx=5; xx<=PIPELEN-1; xx++) {
+                //for(int yy=21; yy<=22; yy++) {
+                final int x = xx;
+                final int y = yy;
+                final At40k.Cell cell = dev.cell(x, y);
+                if ((cell.ylut()&0xff)!=0xB2) continue;
+                AvrDrone.ByteCallback bc = new AvrDrone.ByteCallback() {
+                        public void call(byte b) throws Exception {
+                            boolean v = (b & 0x80) != 0;
+                            vis.drawCell(g, x, y, v?red:green);
+                            //if (x==PIPELEN-1 && y==22) System.out.println("time: " + (System.currentTimeMillis()-then));
+                        }
+                    };
+                scan(dev, cell, NONE, true);
+                drone.readBus(bc);
+                //scan(dev, cell, YLUT, false);
+                cell.v(L3, false);
+                dev.cell(x, 15).h(L3, false);
+                dev.cell(x, 15).v(L3, false);
+            }
+        }
+    }
+    public static void drain(At40k at40k, AvrDrone device) throws Exception {
+        At40k.Cell a = at40k.cell(10,22);
+        At40k.Cell b = at40k.cell(11,22);
+        a.lut(0x00, 0x00);
+        b.lut(0x00, 0x00);
+        for(int i=0; i<30; i++) {
+            //System.out.println(i);
+            a.lut(0xff, 0xff);
+            device.flush();
+            try { Thread.sleep(1); } catch (Exception e) { }
+            a.lut(0x00, 0x00);
+            device.flush();
+            try { Thread.sleep(1); } catch (Exception e) { }
+        }
+        b.ylut(0xB2);
+        a.ylut(0xB2);
+    }
+    public static void doitx(At40k at40k, AvrDrone device) throws Exception {
+        for(int i=5; i<PIPELEN+1; i++) bounce(at40k.cell(i, 23), SE,                     SOUTH);
+        for(int x=5; x<PIPELEN;   x++) muller(at40k.cell(x, 22), x==PIPELEN-1 ? SE : NE, WEST);
+        
+        bounce(at40k.cell(PIPELEN,  21), NW, WEST);
+        
+        for(int x=5; x<PIPELEN;   x++) muller(at40k.cell(x, 21), SW,                     x==PIPELEN-1 ? NORTH : EAST);
+        for(int x=4; x<PIPELEN+1; x++) bounce(at40k.cell(x, 20), NW,                     NORTH);
+        
+        bounce(at40k.cell(4, 22), SE, EAST);
+        //muller(at40k.cell(4PIPELEN-1,21), SW, NORTH);
+        
+        //muller(at40k.cell(4,22), NE, WEST);
+        //at40k.cell(4,22).ylut(0xEE);
+        muller(at40k.cell(5, 22), NE, SOUTH);
+        muller(at40k.cell(5, 21), NW, EAST);
+        /*
+        for(int x=4; x>=0; x--) {
+            at40k.cell(x, 21).ylut(0xAA);
+            at40k.cell(x, 21).yi(EAST);
+            at40k.cell(x, 21).yo(false);
+        }
+
+        at40k.cell(0, 22).ylut(0xAA);
+        at40k.cell(0, 22).yi(SOUTH);
+        at40k.cell(0, 22).yo(false);
+
+        at40k.cell(0, 23).ylut(~0xAA);
+        at40k.cell(0, 23).xlut(~0xcc);
+        at40k.cell(0, 23).yi(SOUTH);
+        at40k.cell(0, 23).yo(false);
+        */
+        for(int x=3; x<=23; x+=2) {
+            pulse_detect(at40k.cell(x-1, 19), SW,    false);
+            pulse_detect(at40k.cell(x-1, 18), WEST,  true);
+            pulse_copy(at40k.cell(x, 19), SW, SOUTH, false);
+            pulse_copy(at40k.cell(x, 18), NW, NORTH, true);
+
+            if (x<17) {
+                pulse_detect(at40k.cell(x-1, 16), SW,    false);
+                pulse_detect(at40k.cell(x-1, 15), WEST,  true);
+                pulse_copy(at40k.cell(x, 16), SW, SOUTH, false);
+                pulse_copy(at40k.cell(x, 15), NW, NORTH, true);
+            }
+            //pulse_detect(at40k.cell(15, 22), NORTH, false);
+            //pulse_detect(at40k.cell(16, 22), NW,    true);
+            //pulse_copy(at40k.cell(16, 21), NW, WEST, false);
+            //pulse_copy(at40k.cell(15, 21), NE, EAST, true);
+        }
+        for(int x=14; x>=1; x--)
+            copy(at40k.cell(x, 17), EAST, EAST);
+        for(int x=4; x>=0; x--)
+            copy(at40k.cell(x, 21), EAST, EAST);
+        copy(at40k.cell(13, 17), SOUTH, SOUTH);
+
+        copy(at40k.cell(0, 20), NORTH, NORTH);
+        copy(at40k.cell(0, 19), NORTH, NORTH);
+        copy(at40k.cell(0, 18), NORTH, NORTH);
+        copy(at40k.cell(0, 17), NORTH, NORTH);
+        copy(at40k.cell(0, 16), NORTH, NORTH);
+        copy(at40k.cell(1, 16), WEST, WEST);
+        copy(at40k.cell(1, 15), NORTH, NORTH);
+
+        copy(at40k.cell(1, 20), SOUTH, SOUTH);
+        copy(at40k.cell(1, 19), SOUTH, SOUTH);
+        copy(at40k.cell(1, 18), SOUTH, SOUTH);
+
+        for(int y=20; y<=23; y++)
+            copy(at40k.cell(23, y), SOUTH, SOUTH);
+
+
+        //for(int x=19; x<=23; x++)
+        //copy(at40k.cell(x, 0), WEST, WEST);
+        //copy(at40k.cell(18, 19), NW, NW);
+        //at40k.iob_top(5, true).enableOutput(SOUTH);
+        //at40k.iob_top(5, false).enableOutput(SOUTH);
+    }
 }