added support for column clocks

[slipway.git] / src / com / atmel / fpslic / Fpslic.java

diff --git a/src/com/atmel/fpslic/Fpslic.java b/src/com/atmel/fpslic/Fpslic.java
index b72a69b..8182d21 100644 (file)
--- a/src/com/atmel/fpslic/Fpslic.java
+++ b/src/com/atmel/fpslic/Fpslic.java
@@ -60,12 +60,26 @@ public abstract class Fpslic {
         public final int     row;
         public final int     col;
         public SectorWire(boolean horizontal, int plane, int col, int row) {
+            this(horizontal, plane, col, row, false);
+        }
+
+        public void useColumnClock() {
+            // this is very poorly understood
+            if (horizontal) throw new RuntimeException();
+            mode4(0x25, (row>>2)+1, col, 0x80);
+            mode4(0x29, (row>>2),   col, 0x40);
+        }
+
+        public SectorWire(boolean horizontal, int plane, int col, int row, boolean global) {
             this.horizontal=horizontal;
-            this.global = false;
+            this.global=global;
             this.plane=plane;
             this.col= horizontal ? (col & ~0x3) : col;
             this.row=!horizontal ? (row & ~0x3) : row;
         }
+        public SectorWire global() {
+            return new SectorWire(horizontal, plane, col, row, true);
+        }
         public boolean isDriven() {
             // FIXME: bridging connections (horiz-to-vert)
             for(int i=0; i<4; i++)
@@ -77,8 +91,8 @@ public abstract class Fpslic {
         private int z(int z)       { return (horizontal ? 0x30 : 0x20) | z; }
         public int code(boolean topleft) {
             switch(plane) {
-                case 0: return z(6)+(topleft?0:1);
-                case 1: return z(8)+(topleft?0:1);
+                case 0: return z(8)+(topleft?0:1);
+                case 1: return z(6)+(topleft?0:1);
                 case 2: return z(2*(4-plane))+(topleft?0:1);
                 case 3: return z(2*(4-plane))+(topleft?0:1);
                 case 4: return z(2*(4-plane))+(topleft?0:1);
@@ -116,11 +130,24 @@ public abstract class Fpslic {
             throw new Error("not implemented");
         }
 
+        public void dork() {
+            mode4zyx(switchbox(north()), (1<<6), (1<<6));
+        }
+
         public void drives(SectorWire w, boolean enable) {
-            mode4zyx(switchbox(w), enable?0x02:0x00, 0x07);
+            // FIXME: better error checks?
+            int val = 0;
+            if (enable) {
+                if (!global) val = 0x02;
+                else         val = 0x04;      
+            }
+            int mask = 0x07;
+            if (w.global) { mask = mask << 3; val = val << 3; }
+            mode4zyx(switchbox(w), val, mask);
         }
 
         public boolean drives(SectorWire w) {
+            // FIXME: better error checks?
             int connect = (mode4zyx(switchbox(w)) >> (global?3:0)) & 0x7;
             return (connect & 0x2)!=0;
         }
@@ -171,12 +198,24 @@ public abstract class Fpslic {
         public final int col;
         public final int row;
 
+        public void setColumnClock(int where) {
+            mode4(0x50, 0x00, col, where);
+        }
+
+        public String toString() { return "cell@("+col+","+row+")"; }
+
         public Cell(int col, int row) {
             this.row = row;
             this.col = col;
         }
         
         public Fpslic fpslic() { return Fpslic.this; }
+        public int hashCode() { return col ^ row ^ Fpslic.this.hashCode(); }
+        public boolean equals(Object o) {
+            if (o==null || (!(o instanceof Cell))) return false;
+            Cell c = (Cell)o;
+            return c.col == col && c.row == row && c.fpslic()==fpslic();
+        }
 
         // Accessors for Neighbors //////////////////////////////////////////////////////////////////////////////