1 package com.atmel.fpslic;
5 import org.ibex.util.Log;
6 import static com.atmel.fpslic.FpslicConstants.*;
8 public abstract class Fpslic {
10 public static class Util {
11 public static int lutSwap(int x) {
24 /** issue a command to the device in Mode4 format; see Gosset's documentation for further details */
25 public int getWidth() { return 24; }
26 public int getHeight() { return 24; }
28 private static String hex2(int i) {
29 String ret = Integer.toString(i, 16);
30 while(ret.length() < 2) ret = "0"+ret;
31 return ret.toUpperCase();
34 public void readMode4(InputStream in) throws IOException {
36 BufferedReader br = new BufferedReader(new InputStreamReader(in));
37 for(String str = br.readLine(); str != null; str = br.readLine()) {
38 long foo = Long.parseLong(str, 16);
39 mode4((int)(foo >> 24), (int)(foo >> 16), (int)(foo >> 8), (int)(foo >> 0));
46 public abstract void flush();
48 public void writeMode4(Writer w) throws IOException {
49 for(int x=0; x<getWidth(); x++)
50 for(int y=0; y<getWidth(); y++)
51 for(int z=0; z<255; z++) {
52 if ((z > 0x09 && z < 0x10) ||
53 (z > 0x11 && z < 0x20) ||
54 (z > 0x29 && z < 0x30) ||
55 (z > 0x39 && z < 0x40) ||
56 (z > 0x41 && z < 0x60) ||
57 (z > 0x67 && z < 0x70) ||
58 (z > 0x77 && z < 0xD0) ||
64 w.write(hex2(mode4(z, y, x) & 0xff));
71 public abstract void mode4(int z, int y, int x, int d);
72 public abstract byte mode4(int z, int y, int x);
73 public byte mode4zyx(int zyx) { return mode4(zyx>>24, (zyx>>16)&0xff, (zyx>>8)&0xff); }
74 public void mode4zyx(int zyx, int d, int invmask) { mode4(zyx>>24, (zyx>>16)&0xff, (zyx>>8)&0xff, d, invmask); }
75 public void mode4(int z, int y, int x, int d, int invmask) {
76 int old = mode4(z, y, x);
81 public void mode4zyx(int zyx, int bit, boolean set) { mode4(zyx>>24, (zyx>>16)&0xff, (zyx>>8)&0xff, bit, set); }
82 public void mode4(int z, int y, int x, int bit, boolean set) {
83 int old = mode4(z, y, x);
85 old |= set ? (1 << bit) : 0;
89 // Fpslic ///////////////////////////////////////////////////////////////////////////////
93 public final class Sector {
96 public Sector(Cell c) { this((c.col/4)*4, (c.row/4)*4); }
97 private Sector(int col, int row) {
98 if (row % 4 != 0) throw new Error("Sector must be created with a multiple-of-4 row");
99 if (col % 4 != 0) throw new Error("Sector must be created with a multiple-of-4 col");
103 public Sector north() { return row+4>=getHeight() ? null : new Sector(col, row+4); }
104 public Sector south() { return row==0 ? null : new Sector(col, row-4); }
105 public Sector east() { return col+4>=getWidth() ? null : new Sector(col+4, row); }
106 public Sector west() { return col==0 ? null : new Sector(col-4, row); }
107 public Cell cell() { return Fpslic.this.cell(col, row); }
110 public final class SectorWire {
111 public final boolean global;
112 public final boolean horizontal;
113 public final int plane;
114 public final int row;
115 public final int col;
116 public SectorWire(boolean horizontal, int plane, int col, int row) {
117 this.horizontal=horizontal;
120 this.col= horizontal ? (col & ~0x3) : col;
121 this.row=!horizontal ? (row & ~0x3) : row;
123 public boolean isDriven() {
124 // FIXME: bridging connections (horiz-to-vert)
125 for(int i=0; i<4; i++)
126 if (cell(horizontal ? col+i : col,
127 horizontal ? row : row+i).out(plane)) return true;
128 // FIXME: sector switchbox drivers
131 private int z(int z) { return (horizontal ? 0x30 : 0x20) | z; }
132 public int code(boolean topleft) {
134 case 0: return z(6)+(topleft?0:1);
135 case 1: return z(8)+(topleft?0:1);
136 case 2: return z(2*(4-plane))+(topleft?0:1);
137 case 3: return z(2*(4-plane))+(topleft?0:1);
138 case 4: return z(2*(4-plane))+(topleft?0:1);
143 private final int fine() { return horizontal ? row : col; }
144 public final int coarse() { return horizontal ? col : row; }
145 private int _row() { return horizontal ? row : ((row)>>2); }
146 private int _col() { return horizontal ? ((col)>>2) : col; }
148 public SectorWire west() { return !horizontal ? null : col-4<0 ? null : new SectorWire(horizontal, plane, col-4, row); }
149 public SectorWire east() { return !horizontal ? null : col+4>=getWidth() ? null : new SectorWire(horizontal, plane, col+4, row); }
150 public SectorWire north() { return horizontal ? null : row+4>=getHeight() ? null : new SectorWire(horizontal, plane, col, row+4); }
151 public SectorWire south() { return horizontal ? null : row-4<0 ? null : new SectorWire(horizontal, plane, col, row-4); }
153 public String toString() {
155 (horizontal?(col+":"+(col+3)):(""+col))+","+
156 (horizontal?(row+"") :(row+":"+(row+3)))+
160 /** returns the ZYX0 coordinate of the byte controlling the switchbox that allows <tt>w</tt> to drive this wire */
161 public int switchbox(SectorWire w) {
162 if (w.horizontal==horizontal) {
163 if (w.plane!=plane) throw new Error();
164 if (Math.abs(w.coarse()-coarse())!=4) throw new Error(w.coarse() + " -- " + coarse());
165 boolean topleft = horizontal ? (w.coarse() < coarse()) : (w.coarse() > coarse());
166 int col = _col() + (( horizontal && !topleft) ? 1 : 0);
167 int row = _row() + ((!horizontal && topleft) ? 1 : 0);
168 return (code(topleft) << 24) | (row<<16) | (col<<8);
170 throw new Error("not implemented");
173 public void drives(SectorWire w, boolean enable) {
174 mode4zyx(switchbox(w), enable?0x02:0x00, 0x07);
177 public boolean drives(SectorWire w) {
178 int connect = (mode4zyx(switchbox(w)) >> (global?3:0)) & 0x7;
179 return (connect & 0x2)!=0;
181 public SectorWire driverRight() {
182 System.out.println("checking " + Integer.toString(code(true), 16) + " " + Integer.toString(_row(), 16) + " " + Integer.toString(_col(), 16));
183 int ret = mode4(z(code(true)), _row(), _col());
184 ret = (ret >> (global?3:0)) & 0x7;
187 case 1: return null; /* global wire on same side */
188 case 2: return new SectorWire(horizontal, plane, horizontal?(col+4):col, horizontal?row:(row+4));
189 case 4: return null; /* global wire on other side */
190 default: throw new Error("multiple drivers on " + this + "!");
195 public final class SwitchBox {
196 public final boolean h;
197 public final int col;
198 public final int row;
199 public final int plane;
200 public SwitchBox(boolean h, int col, int row, int plane) { this.h = h; this.col = col; this.row = row; this.plane = plane; }
201 public SectorWire west(boolean global) { return !h ? null : global ? null : new SectorWire(h, col-4, row, plane); }
202 public SectorWire east(boolean global) { return !h ? null : global ? null : new SectorWire(h, col+4, row, plane); }
203 public SectorWire north(boolean global) { return !h ? null : global ? null : new SectorWire(h, col, row-4, plane); }
204 public SectorWire south(boolean global) { return !h ? null : global ? null : new SectorWire(h, col, row+4, plane); }
208 public Cell cell(int col, int row) {
209 if (col<0) return null;
210 if (row<0) return null;
211 if (col>=getWidth()) return null;
212 if (row>=getHeight()) return null;
213 return new Cell(col, row);
216 public final class Cell {
217 public final int col;
218 public final int row;
220 public Cell(int col, int row) {
225 // Accessors for Neighbors //////////////////////////////////////////////////////////////////////////////
227 public SectorWire hwire(int plane) { return new SectorWire(true, plane, col, row); }
228 public SectorWire vwire(int plane) { return new SectorWire(false, plane, col, row); }
229 public Cell east() { return cell(col+1, row); }
230 public Cell west() { return cell(col-1, row); }
231 public Cell north() { return cell(col, row+1); }
232 public Cell south() { return cell(col, row-1); }
233 public Cell ne() { return cell(col+1, row+1); }
234 public Cell nw() { return cell(col-1, row+1); }
235 public Cell se() { return cell(col+1, row-1); }
236 public Cell sw() { return cell(col-1, row-1); }
237 public Sector sector() { return new Sector(this); }
239 /* bit positions mean: [MSB] zxy z_y zx_ z__ _xy __y _x_ ___ [LSB] */
240 public void lut(int xlut, int ylut) { xlut(xlut); ylut(ylut); }
241 public void xlut(int table) { mode4(7, row, col, (byte)(table & 0xff)); }
242 public byte xlut() { return (byte)(mode4(7, row, col) & 0xff); }
243 public String printXLut() { return printLut(xlut(), "x", "y", "t"); }
244 public String printXLutX() { return printLut(xlut(), str(xi(), "x"), str(yi(), "y"), str(ti_source(), "t")); }
246 public String str(int x, String def) {
248 case NORTH: return "n";
249 case SOUTH: return "s";
250 case EAST: return "e";
251 case WEST: return "w";
252 case NW: return "nw";
253 case SE: return "se";
254 case NE: return "ne";
255 case SW: return "sw";
256 case FB: return "fb";
257 case L0: return (hx(0)&&vx(0))?"HV0":hx(0)?"H0":vx(0)?"V0":"L0";
258 case L1: return (hx(1)&&vx(1))?"HV1":hx(1)?"H1":vx(1)?"V1":"L1";
259 case L2: return (hx(2)&&vx(2))?"HV2":hx(2)?"H2":vx(2)?"V2":"L2";
260 case L3: return (hx(3)&&vx(3))?"HV3":hx(3)?"H3":vx(3)?"V3":"L3";
261 case L4: return (hx(4)&&vx(4))?"HV4":hx(4)?"H4":vx(4)?"V4":"L4";
266 /* bit positions mean: [MSB] zxy zx_ z_y z__ _xy _x_ __y ___ [LSB] */
267 public void ylut(int table) { mode4(6, row, col, (byte)(table & 0xff)); }
268 public byte ylut() { return (byte)(mode4(6, row, col) & 0xff); }
269 public String printYLut() { return printLut(ylut(), "y", "x", "t"); }
270 public String printYLutX() { return printLut(ylut(), str(yi(), "y"), str(xi(), "x"), str(ti_source(), "t")) + Integer.toString(ylut() & 0xff, 16); }
272 public void ff_reset_value(boolean value) {
273 //mode4( /* FIXME WRONG!!! */, row, col, 3, !value); return;
276 public boolean ff_reset_value() { return false; }
277 public boolean columnClocked() {
281 public void out(int plane, boolean enable) {
283 case L0: mode4(0x00, row, col, 2, enable); return;
284 case L1: mode4(0x00, row, col, 3, enable); return;
285 case L2: mode4(0x00, row, col, 5, enable); return;
286 case L3: mode4(0x00, row, col, 4, enable); return;
287 case L4: mode4(0x00, row, col, 1, enable); return;
288 default: throw new RuntimeException("invalid argument");
292 public boolean out(int plane) {
294 case L0: return (mode4(0x00, row, col) & (1<<2)) != 0;
295 case L1: return (mode4(0x00, row, col) & (1<<3)) != 0;
296 case L2: return (mode4(0x00, row, col) & (1<<5)) != 0;
297 case L3: return (mode4(0x00, row, col) & (1<<4)) != 0;
298 case L4: return (mode4(0x00, row, col) & (1<<1)) != 0;
299 default: throw new RuntimeException("invalid argument");
303 public void h(int plane, boolean enable) {
305 case 0: mode4(0x08, row, col, 2, enable); return;
306 case 1: mode4(0x08, row, col, 0, enable); return;
307 case 2: mode4(0x08, row, col, 5, enable); return;
308 case 3: mode4(0x08, row, col, 6, enable); return;
309 case 4: mode4(0x00, row, col, 6, enable); return;
310 default: throw new RuntimeException("invalid argument");
314 public boolean hx(int plane) {
316 case 0: return (mode4(0x08, row, col) & (1<<2)) != 0;
317 case 1: return (mode4(0x08, row, col) & (1<<0)) != 0;
318 case 2: return (mode4(0x08, row, col) & (1<<5)) != 0;
319 case 3: return (mode4(0x08, row, col) & (1<<6)) != 0;
320 case 4: return (mode4(0x00, row, col) & (1<<6)) != 0;
321 default: throw new RuntimeException("invalid argument");
325 public void v(int plane, boolean enable) {
327 case 0: mode4(0x08, row, col, 1, enable); return;
328 case 1: mode4(0x08, row, col, 3, enable); return;
329 case 2: mode4(0x08, row, col, 4, enable); return;
330 case 3: mode4(0x08, row, col, 7, enable); return;
331 case 4: mode4(0x00, row, col, 7, enable); return;
332 default: throw new RuntimeException("invalid argument");
336 public boolean vx(int plane) {
338 case 0: return (mode4(0x08, row, col) & (1<<1)) != 0;
339 case 1: return (mode4(0x08, row, col) & (1<<3)) != 0;
340 case 2: return (mode4(0x08, row, col) & (1<<4)) != 0;
341 case 3: return (mode4(0x08, row, col) & (1<<7)) != 0;
342 case 4: return (mode4(0x00, row, col) & (1<<7)) != 0;
343 default: throw new RuntimeException("invalid argument");
348 public int ti_source() {
349 switch(mode4(1, row, col) & 0x30) {
350 case 0x20: return zi();
351 case 0x10: return FB;
352 case 0x00: return wi();
353 default: throw new Error("ack!");
358 System.err.println("found " + (mode4(1, row, col) & 0x34));
359 switch(mode4(1, row, col) & 0x34) {
360 case 0x20: return TMUX_Z;
361 case 0x24: return TMUX_W_AND_Z;
362 case 0x34: return TMUX_FB;
363 case 0x14: return TMUX_W_AND_FB;
364 case 0x00: return TMUX_W;
365 //default: throw new RuntimeException("unknown!");
366 default: return TMUX_W;
370 public void t(int code) {
373 case TMUX_Z: result = 0x20; break; // TOTALLYBOGUS throw new Error("not implemented, but should be possible");
374 case TMUX_W_AND_Z: result = 0x24; break;
375 case TMUX_FB: result = 0x34; break; /* I think this is actually W_AND_FB, sadly */
376 case TMUX_W_AND_FB: result = 0x14; break;
377 case TMUX_W: result = 0x00; break;
378 //default: throw new RuntimeException("unknown code! " + code);
379 default: result = 0x00; break;
381 mode4(1, row, col, result, 0x34);
384 private void fmux(int source) {
389 default: throw new Error("unknown argument to fmux()");
393 public boolean win_easable() {
398 return mode4(1, row, col) & 0x34;
401 public void t(boolean ignore_z_and_fb, boolean zm_drives_fb, boolean fb_drives_wm) {
402 // still not totally satisfied...
403 // need to find the bit that sets the w-mux off
404 // what does it mean for both bits (0x30) to be set to 1?
405 //if (fb && z) throw new RuntimeException("invalid combination");
413 // ttt => fb&w [0x34]
414 // ftt => fb&w [0x14]
415 // fft => fb&w [0x10]
419 // tft => fb&w [0x30]
420 if (ignore_z_and_fb) result |= 0x20;
421 if (zm_drives_fb) result |= 0x04;
422 if (fb_drives_wm) result |= 0x10;
423 mode4(1, row, col, result, 0x34);
427 public void c(int source) {
429 case XLUT: mode4(1, row, col, 0x00, 0xc0); break;
430 case YLUT: mode4(1, row, col, 0x40, 0xc0); break;
431 case ZMUX: mode4(1, row, col, 0x80, 0xc0); break;
432 default: throw new RuntimeException("Invalid Argument");
436 int cval = mode4(1, row, col) & 0xc0;
438 case 0x00: return XLUT;
439 case 0x40: return YLUT;
440 case 0x80: return ZMUX;
442 throw new Error("c() => " + cval);
444 public void b(boolean registered) { mode4(1, row, col, 3, !registered); }
445 public void f(boolean registered) { mode4(1, row, col, 2, !registered); }
446 public boolean xo() { return (mode4(1, row, col) & 0x01) != 0; }
447 public boolean yo() { return (mode4(1, row, col) & 0x02) != 0; }
448 public void xo(boolean center) { mode4(1, row, col, 0, center); }
449 public void yo(boolean center) { mode4(1, row, col, 1, center); }
450 public boolean b() { return (mode4(1, row, col) & (1 << 3)) == 0; }
451 public boolean f() { return (mode4(1, row, col) & (1 << 2)) == 0; }
452 public boolean x() { return (mode4(1, row, col) & (1 << 1)) != 0; }
453 public boolean y() { return (mode4(1, row, col) & (1 << 0)) != 0; }
456 switch (mode4(0x02, row, col) & 0x3) {
460 default: throw new RuntimeException("invalid argument");
463 public void oe(int source) {
465 case NONE: mode4(0x02, row, col, 0, 0x3); break;
466 case H4: mode4(0x02, row, col, 1, 0x3); break;
467 case V4: mode4(0x02, row, col, 2, 0x3); break;
468 default: throw new RuntimeException("invalid argument");
473 // FIXME: can be multiple
474 if ((mode4(0x03, row, col) & (1<<4))!=0) return L4;
475 switch(mode4(0x05, row, col) & 0xff) {
476 case 0x80: return SW;
477 case (1<<6): return NE;
478 case (1<<5): return SE;
479 case (1<<4): return NW;
480 case (1<<3): return L0;
481 case (1<<2): return L1;
482 case (1<<1): return L2;
483 case (1<<0): return L3;
485 default: throw new Error();
489 public void xi(int source) {
491 case SW: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<7); break;
492 case NE: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<6); break;
493 case SE: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<5); break;
494 case NW: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<4); break;
495 case L4: mode4(0x03, row, col, 4, true); mode4(0x05, row, col, 0); break;
496 case L3: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<0); break;
497 case L2: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<1); break;
498 case L1: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<2); break;
499 case L0: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<3); break;
500 case NONE: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 0); break;
501 default: throw new RuntimeException("invalid argument");
506 if ((mode4(0x02, row, col) & (1<<6))!=0) return L4;
507 switch(mode4(0x04, row, col) & 0xff) {
508 case 0x80: return NORTH;
509 case (1<<5): return SOUTH;
510 case (1<<6): return WEST;
511 case (1<<4): return EAST;
512 case (1<<3): return L0;
513 case (1<<2): return L1;
514 case (1<<1): return L2;
515 case (1<<0): return L3;
517 default: throw new Error();
521 public void yi(int source) {
523 case NORTH: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<7); break;
524 case SOUTH: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<5); break;
525 case WEST: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<6); break;
526 case EAST: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<4); break;
527 case L4: mode4(0x02, row, col, 6, true); mode4(0x04, row, col, 0); break;
528 case L3: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<0); break;
529 case L2: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<1); break;
530 case L1: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<2); break;
531 case L0: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 1<<3); break;
532 case NONE: mode4(0x02, row, col, 6, false); mode4(0x04, row, col, 0); break;
533 default: throw new RuntimeException("invalid argument");
537 public void wi(int source) {
539 case L4: mode4(0x03, row, col, 1<<5, 0xEC); break;
540 case L3: mode4(0x03, row, col, 1<<6, 0xEC); break;
541 case L2: mode4(0x03, row, col, 1<<7, 0xEC); break;
542 case L1: mode4(0x03, row, col, 1<<3, 0xEC); break;
543 case L0: mode4(0x03, row, col, 1<<2, 0xEC); break;
544 case NONE: mode4(0x03, row, col, 0, 0xEC); break;
545 default: throw new RuntimeException("invalid argument");
550 int who = mode4(0x03, row, col) & 0xEC;
552 case (1<<5): return L4;
553 case (1<<6): return L3;
554 case (1<<7): return L2;
555 case (1<<3): return L1;
556 case (1<<2): return L0;
557 case (1<<0): return NONE; /* huh? */
558 case (0): return NONE;
559 default: throw new RuntimeException("invalid argument: " + who);
564 public void zi(int source) {
566 case L4: mode4(0x02, row, col, 1<<7, 0xDB); break;
567 case L3: mode4(0x02, row, col, 1<<5, 0xDB); break;
568 case L2: mode4(0x02, row, col, 1<<4, 0xDB); break;
569 case L1: mode4(0x02, row, col, 1<<3, 0xDB); break;
570 case L0: mode4(0x02, row, col, 1<<2, 0xDB); break;
571 case NONE: mode4(0x02, row, col, 0, 0xDB); break;
572 default: throw new RuntimeException("invalid argument");
577 switch(mode4(0x02, row, col) & 0xDB) {
578 case (1<<7): return L4;
579 case (1<<5): return L3;
580 case (1<<4): return L2;
581 case (1<<3): return L1;
582 case (1<<2): return L0;
583 case (1<<1): return NONE; /* huh? */
584 case (1<<0): return NONE; /* huh? */
586 default: throw new RuntimeException("invalid argument: zi=="+(mode4(0x02, row, col) & 0xDB));
591 // Relevance //////////////////////////////////////////////////////////////////////////////
593 public boolean xo_relevant() { return xo_relevant(NE) || xo_relevant(SE) || xo_relevant(NW) || xo_relevant(SW); }
594 public boolean xo_relevant(int direction) {
596 case NE: return ne() != null && ne().xi()==SW /*&& ne().xi_relevant()*/;
597 case NW: return nw() != null && nw().xi()==SE /*&& nw().xi_relevant()*/;
598 case SE: return se() != null && se().xi()==NW /*&& se().xi_relevant()*/;
599 case SW: return sw() != null && sw().xi()==NE /*&& sw().xi_relevant()*/;
600 default: return false;
603 public boolean yo_relevant() { return yo_relevant(NORTH) || yo_relevant(SOUTH) || yo_relevant(EAST) || yo_relevant(WEST); }
604 public boolean yo_relevant(int direction) {
606 case NORTH: return north() != null && north().yi()==SOUTH /*&& north().yi_relevant()*/;
607 case EAST: return east() != null && east().yi()==WEST /*&& east().yi_relevant()*/;
608 case SOUTH: return south() != null && south().yi()==NORTH /*&& south().yi_relevant()*/;
609 case WEST: return west() != null && west().yi()==EAST /*&& west().yi_relevant()*/;
610 default: return false;
613 public boolean xi_relevant() { return xi_to_xlut_relevant() || xi_to_ylut_relevant(); }
614 public boolean yi_relevant() { return yi_to_xlut_relevant() || yi_to_ylut_relevant(); }
615 public boolean xi_to_ylut_relevant() { return (((ylut() & 0xcc) >> 2) != (ylut() & 0x33)); }
616 public boolean yi_to_xlut_relevant() { return (((xlut() & 0xcc) >> 2) != (xlut() & 0x33)); }
617 public boolean zi_to_xlut_relevant() { return (((xlut() & LUT_Z) >> 4) != (xlut() & LUT_Z)); }
618 public boolean zi_to_ylut_relevant() { return (((ylut() & LUT_Z) >> 4) != (ylut() & LUT_Z)); }
619 public boolean xi_to_xlut_relevant() { return (((xlut() & LUT_SELF) >> 1) != (xlut() & (LUT_SELF >> 1))); }
620 public boolean yi_to_ylut_relevant() { return (((ylut() & LUT_SELF) >> 1) != (ylut() & (LUT_SELF >> 1))); }
621 public boolean xlut_relevant() {
622 if ((c()==XLUT || c()==ZMUX) && c_relevant()) return true;
623 if (xo()) return false;
624 return xo_relevant();
626 public boolean ylut_relevant() {
627 if ((c()==YLUT || c()==ZMUX) && c_relevant()) return true;
628 if (yo()) return false;
629 return yo_relevant();
631 public boolean c_relevant() {
633 case 0x34: return true;
634 case 0x14: return true;
635 case 0x10: return true;
636 case 0x30: return true;
638 for(int i=0; i<5; i++)
641 if (xo() || yo()) return true;
645 public boolean register_relevant() {
646 if (!c_relevant()) return false;
647 if (f() && out_relevant()) return true;
648 if (f() && fb_relevant()) return true;
649 if (b() && xo()) return true;
650 if (b() && yo()) return true;
653 public boolean out_relevant() {
655 boolean connect = false;
656 for(int i=0; i<4; i++) {
657 if (out(L0+i)) out = true;
658 if (hx(L0+i)) connect = true;
659 if (vx(L0+i)) connect = true;
661 return out && connect;
663 public boolean fb_relevant() {
664 if (!(zi_to_xlut_relevant()) ||
665 !(zi_to_ylut_relevant())) return false;
667 case 0x34: return true;
668 case 0x14: return true;
669 case 0x10: return true;
670 case 0x30: return true;
678 public IOB iob_bot(int col, boolean primary) { return new IOB(col, 0, primary, true); }
679 public IOB iob_top(int col, boolean primary) { return new IOB(col, 1, primary, true); }
680 public IOB iob_left(int row, boolean primary) { return new IOB(0, row, primary, false); }
681 public IOB iob_right(int row, boolean primary) { return new IOB(1, row, primary, false); }
683 public IOB fromPin(int pin) {
684 if (pin >= 4 && pin <= 11) return io(pin-3);
685 if (pin >= 15 && pin <= 18) return io(pin-2);
686 if (pin >= 19 && pin <= 24) return io(pin);
687 if (pin >= 27 && pin <= 30) return io(pin-2);
688 if (pin >= 33 && pin <= 36) return io(pin);
689 if (pin >= 38 && pin <= 47) return io(pin+1);
692 if (pin >= 33 && pin <= 36) return io(pin+36);
693 if (pin >= 38 && pin <= 41) return io(pin+43);
694 if (pin >= 42 && pin <= 43) return io(pin+47);
695 if (pin >= 44 && pin <= 47) return io(pin+49);
696 if (pin >= 57 && pin <= 62) return io(pin+40);
697 if (pin >= 63 && pin <= 66) return io(pin+46);
698 if (pin >= 68 && pin <= 71) return io(pin+53);
699 if (pin >= 72 && pin <= 73) return io(pin+53);
700 if (pin >= 74 && pin <= 75) return io(pin+63);
701 if (pin >= 76 && pin <= 77) return io(143+(pin-76));
702 if (pin >= 80 && pin <= 81) return io(145+(pin-80));
703 if (pin >= 82 && pin <= 85) return io(151+(pin-82));
704 if (pin >= 86 && pin <= 89) return io(165+(pin-86));
705 if (pin >= 91 && pin <= 94) return io(177+(pin-91));
706 if (pin >= 95 && pin <= 96) return io(183+(pin-95));
707 if (pin >= 97 && pin <= 100) return io(189+(pin-97));
708 if (pin >= 161 && pin <= 164) return io(289+(pin-161));
709 if (pin >= 165 && pin <= 166) return io(297+(pin-165));
710 if (pin >= 167 && pin <= 168) return io(303+(pin-167));
711 if (pin >= 169 && pin <= 170) return io(309+(pin-169));
712 if (pin >= 172 && pin <= 173) return io(313+(pin-172));
713 if (pin >= 174 && pin <= 175) return io(325+(pin-174));
714 if (pin >= 176 && pin <= 179) return io(327+(pin-176));
715 if (pin >= 180 && pin <= 181) return io(335+(pin-180));
716 if (pin >= 184 && pin <= 185) return io(337+(pin-184));
717 if (pin >= 186 && pin <= 191) return io(343+(pin-186));
718 if (pin >= 192 && pin <= 193) return io(359+(pin-192));
719 if (pin >= 195 && pin <= 196) return io(363+(pin-195));
720 if (pin >= 197 && pin <= 200) return io(369+(pin-197));
721 if (pin >= 201 && pin <= 204) return io(381+(pin-201));
723 public io(int ionum) {
725 int cell = (94 - pin) / 2;
726 boolean primary = cell * 2 == (94-pin);
730 public final class IOB {
731 public final int col;
732 public final int row;
733 public final boolean primary;
734 public final boolean northsouth;
735 public IOB(int col, int row, boolean primary, boolean northsouth) {
738 this.northsouth = northsouth;
739 this.primary = primary;
742 public String dump() {
743 System.out.println("[ "+
744 (schmitt()?"schmitt ":"")+
745 (slew()==3?"fast ":slew()==2?"med ":slew()==1?"slow ":"slew-unknown ")+
751 public void enableOutput(int direction) {
758 // note: east-side IOBs should have slew=med, others slew=fast
759 slew((!northsouth && col==1) ? MEDIUM : FAST);
761 public void enableInput() {
766 public void useoem(boolean use) { mode4(z(3), row, col, 6, use); }
767 public boolean useoem() { return (mode4(z(3), row, col) & (1<<6))!=0; }
768 public void schmitt(boolean use) { mode4(z(0), row, col, 7, use); }
769 public boolean schmitt() { return (mode4(z(0), row, col) & (1<<7))!=0; }
771 public void slew(int slew) {
773 case FAST: mode4(z(0), row, col, 3<<5, 0x60); return;
774 case MEDIUM: mode4(z(0), row, col, 2<<5, 0x60); return;
775 case SLOW: mode4(z(0), row, col, 1<<5, 0x60); return;
776 default: throw new Error();
780 public void oem(int source) {
782 case ALWAYS_ON: mode4(z(3), row, col, 1<<5, 0x3f); return;
783 case ALWAYS_OFF: mode4(z(3), row, col, 0, 0x3f); return;
784 default: throw new Error();
788 private int z(int code) { return (northsouth ? 0x70 : 0x60) | (primary ? 0x00 : 0x04) | (code & 0x7); }
789 public void pullup() { mode4(z(0), row, col, 0x00<<1, 0x06); }
790 public void pulldown() { mode4(z(0), row, col, 0x03<<1, 0x06); }
791 public void pullnone() { mode4(z(0), row, col, 0x01<<1, 0x06); }
792 public void oe(boolean oe) {
793 int old = mode4(z(1), row, col) & (~(1<<5));
794 old |= oe ? 0 : (1<<5);
795 mode4(z(1), row, col, old & 0xff);
798 public void output(int which) {
801 mode4(z(1), row, col, 0, 0x1f); return;
802 case WEST: case EAST: case NORTH: case SOUTH:
803 mode4(z(1), row, col, 1<<0, 0x1f); return;
804 case NW: case SW: case NE: case SE:
805 mode4(z(1), row, col, 1<<1, 0x1f); return;
806 default: throw new Error();
812 public static void main(String[] s) throws Exception {
813 System.out.println(printLut(0x39, "se", "n", "L0"));
815 public static synchronized String printLut(int lut, String xn, String yn, String zn) {
817 File f = File.createTempFile("mvsis", ".mvs");
820 FileOutputStream fos = new FileOutputStream(f);
821 PrintWriter pw = new PrintWriter(new OutputStreamWriter(fos));
822 pw.println(".model clb");
823 pw.println(".inputs "+xn+" "+yn+" "+zn);
824 pw.println(".outputs O");
825 pw.println(".table "+xn+" "+yn+" "+zn+/*("X_xor_Y X_xor_Z Y_xor_Z")+*/ " -> O");
826 for(int i=8; i>=0; i--) {
827 int x = ((i & 0x01)!=0 ? 1 : 0);
828 int y = ((i & 0x02)!=0 ? 1 : 0);
829 int z = ((i & 0x04)!=0 ? 1 : 0);
833 //pw.print(" "+(x ^ y)+" ");
834 //pw.print(" "+(y ^ z)+" ");
835 //pw.print(" "+(z ^ y)+" ");
836 pw.print((lut & (1<<i))==0 ? 0 : 1);
842 Process p = Runtime.getRuntime().exec(new String[] { "mvsis", "-c", "simplify;print_factor", f.getAbsolutePath() });
843 new Gobble("mvsis: ", p.getErrorStream()).start();
844 //new Gobble("mvsis: ", p.getInputStream()).start();
845 BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
846 String ret = br.readLine();
849 } catch (Exception e) {
851 return "*mvsis_error*";
855 public static class Gobble extends Thread {
856 private final String header;
857 private final BufferedReader br;
858 public Gobble(String header, BufferedReader br) { this.br = br; this.header = header; }
859 public Gobble(String header, Reader r) { this(header, new BufferedReader(r)); }
860 public Gobble(String header, InputStream is) { this(header, new InputStreamReader(is)); }
863 for(String s = br.readLine(); s!=null; s=br.readLine())
864 System.err.println(header + s);
865 } catch (Exception e) {