expand leaf FIFOs from 4 elements to 8 elements

[fleet.git] / src / edu / berkeley / fleet / fpga / FpgaDock.java

diff --git a/src/edu/berkeley/fleet/fpga/FpgaDock.java b/src/edu/berkeley/fleet/fpga/FpgaDock.java
index 71df5ec..b7212e8 100644 (file)
--- a/src/edu/berkeley/fleet/fpga/FpgaDock.java
+++ b/src/edu/berkeley/fleet/fpga/FpgaDock.java
@@ -20,7 +20,8 @@ public class FpgaDock extends FleetTwoDock implements FabricElement {
 
     private static final int INSTRUCTION_FIFO_SIZE = 12;
     private static final int EPILOGUE_FIFO_SIZE    = 0;
-    private static final int DATA_FIFO_SIZE        = 4;
+    //private static final int DATA_FIFO_SIZE        = 4;
+    private static final int DATA_FIFO_SIZE        = 8;
         
     private FpgaDestination dataDestination;
     private FpgaDestination instructionDestination;
@@ -187,7 +188,6 @@ public class FpgaDock extends FleetTwoDock implements FabricElement {
             Module.Latch     flag_b         = new Latch("flag_b", 1);
             Module.Latch     flag_c         = new Latch("flag_c", 1);
             Module.Latch     flag_d         = new Latch("flag_d", 1);
-            Module.Latch     flag_z         = new Latch("flag_z", 1);
 
             Module.SinkPort   token_out     = fabric_out;
             Module.SourcePort token_in      = dfifo_out;
@@ -274,8 +274,7 @@ public class FpgaDock extends FleetTwoDock implements FabricElement {
                     ondeck,
                     torpedo_branch_torpedo,
                     new AssignAction(olc,    new ConstantValue(new BitVector(olc.width).set(0))),
-                    new AssignAction(flag_z, new ConstantValue(new BitVector(1).set(0))),
-                    new AssignAction(flag_d, new ConstantValue(new BitVector(1).set(0))),
+                    new AssignAction(flag_d, new ConstantValue(new BitVector(1).set(1))),
                     new AssignAction(ilc,    new ConstantValue(new BitVector(ilc.width).set(1)))
                 });
 
@@ -310,13 +309,6 @@ public class FpgaDock extends FleetTwoDock implements FabricElement {
                                                 new AssignAction(olc, new SimpleValue("olc==0 ? 0 : decremented"))),
 
                           new ConditionalAction(ondeck.testMask(fpga.SET_OLC_FROM_DATA_LATCH),
-                                                new AssignAction(flag_z, new ConstantValue(new BitVector(1).set(0)))),
-                          new ConditionalAction(ondeck.testMask(fpga.SET_OLC_FROM_IMMEDIATE),
-                                                new AssignAction(flag_z, new ConstantValue(new BitVector(1).set(0)))),
-                          new ConditionalAction(ondeck.testMask(fpga.SET_OLC_FROM_OLC_MINUS_ONE),
-                                                new AssignAction(flag_z, new SimpleValue("(olc==0 || olc==1)"))),
-
-                          new ConditionalAction(ondeck.testMask(fpga.SET_OLC_FROM_DATA_LATCH),
                                                 new AssignAction(flag_d, new SimpleValue("data_latch_output==0"))),
                           new ConditionalAction(ondeck.testMask(fpga.SET_OLC_FROM_IMMEDIATE),
                                                 new AssignAction(flag_d, new SimpleValue(ondeck.getBits(fpga.SET_OLC_FROM_IMMEDIATE).getVerilog()+"==0"))),
@@ -343,16 +335,21 @@ public class FpgaDock extends FleetTwoDock implements FabricElement {
                                                 new AssignAction(flag_a, new_flag(ondeck.getBits(fpga.SET_FLAGS_A),flag_a,flag_b,flag_c))),
                           new ConditionalAction(ondeck.testMask(fpga.SET_FLAGS),
                                                 new AssignAction(flag_b, new_flag(ondeck.getBits(fpga.SET_FLAGS_B),flag_a,flag_b,flag_c))),
-                          new ConditionalAction(inbox
-                                                ? new OrTrigger(ondeck.testMask(fpga.DI), ondeck.testMask(fpga.TI))
-                                                : new AndTrigger(ondeck.testMask(fpga.DI).invert(), ondeck.testMask(fpga.TI)),
-                                                new AssignAction(flag_c, dfifo_out.getBits(dfifo_width-1, dfifo_width-1))),
+                          new ConditionalAction(ondeck.testMask(fpga.MOVE),
+                                                new AssignAction(flag_c,
+                                                                 inbox
+                                                                 ? dfifo_out.getBits(dfifo_width-1, dfifo_width-1)
+                                                                 : new MuxValue(ondeck.testMask(fpga.DC),
+                                                                                ship_out.getBits(fpga.getWordWidth(), fpga.getWordWidth()),
+                                                                                dfifo_out.getBits(dfifo_width-1, dfifo_width-1))
+                                                                 )),
                           new ConditionalAction(ondeck.testMask(fpga.DI),    data_in),
                           new ConditionalAction(ondeck.testMask(fpga.DO),    data_out),
                           new ConditionalAction(ondeck.testMask(fpga.FLUSH), data_out),
                           inbox
-                          ? new AssignAction(new SimpleAssignable(data_out.getName()+"["+fpga.getWordWidth()+"]"), new SimpleValue(fpga.FLUSH.verilog(ondeck.getName())+"?1:0"))
-                          : new ConditionalAction(ondeck.testMask(fpga.DI),   new AssignAction(flag_c, new SimpleValue(data_latch_input.getVerilog()+"["+fpga.getWordWidth()+"]"))),
+                          ? new AssignAction(new SimpleAssignable(data_out.getName()+"["+fpga.getWordWidth()+"]"),
+                                             new SimpleValue(fpga.FLUSH.verilog(ondeck.getName())+"?1:0"))
+                          : null,
                           new ConditionalAction(ondeck.testMask(fpga.TI),    token_in),
                           new ConditionalAction(ondeck.testMask(fpga.TO),    token_out),
                           new ConditionalAction(ondeck.testMask(fpga.DC),   new AssignAction(data_latch, data_latch_input)),