Removed Profiler. It may return in a future release.

src/main/java/com/loomcom/symon/Profiler.java

@@ -1,158 +0,0 @@
-/**
- * A simple profiler, for debugging the simulator.
- * It is safe to ignore me.
- */
-
-package com.loomcom.symon;
-
-import com.loomcom.symon.devices.*;
-import com.loomcom.symon.exceptions.*;
-
-public class Profiler implements InstructionTable {
-
-  public static void main(String[] args) throws MemoryAccessException {
-    // new Profiler().profileMemoryReads();
-    // new Profiler().dumpOpCodes();
-    new Profiler().profileProgram();
-  }
-
-  public void dumpOpCodes() {
-    for (int i = 0; i < 0x100; i++) {
-      String name = opcodeNames[i];
-      Mode mode = instructionModes[i];
-
-      System.out.print(String.format("0x%02x: ", i));
-
-      if (name == null) {
-        System.out.println("n/a");
-      } else {
-        System.out.println(name + " (" + mode + ")");
-      }
-    }
-  }
-
-  public void profileProgram() throws MemoryAccessException {
-    Bus bus = new Bus(0, 65535);
-    Cpu cpu = new Cpu();
-
-    bus.addCpu(cpu);
-
-    try {
-      bus.addDevice(new Memory(0x0000, 0x10000));
-    } catch (MemoryRangeException ex) {
-      System.err.println("Memory Range Exception! " + ex.getMessage());
-      return;
-    }
-
-    // Start at 0x0300
-    bus.write(0xfffc, 0x00);
-    bus.write(0xfffd, 0x03);
-
-    // The program to run, in an infinite loop.
-    bus.write(0x0300, 0xa9); // LDA #$FF
-    bus.write(0x0301, 0xff);
-    bus.write(0x0302, 0xea); // NOP
-    bus.write(0x0303, 0xea); // NOP
-    bus.write(0x0304, 0xa0); // LDY #$1A
-    bus.write(0x0305, 0x1a);
-    bus.write(0x0306, 0xea); // NOP
-    bus.write(0x0307, 0xea); // NOP
-    bus.write(0x0308, 0xa2); // LDX #$03
-    bus.write(0x0309, 0x03);
-
-    bus.write(0x030a, 0xa9); // LDA #$00
-    bus.write(0x030b, 0x00);
-    bus.write(0x030c, 0xa2); // LDX #$00
-    bus.write(0x030d, 0x00);
-    bus.write(0x030e, 0xa0); // LDY #$00
-    bus.write(0x030f, 0x00);
-
-    bus.write(0x0310, 0x4c); // JMP #$0300
-    bus.write(0x0311, 0x00);
-    bus.write(0x0312, 0x03);
-
-
-    long sum = 0;
-
-    // The number of times to run the program
-    long iters = 1000;
-
-    // The number of steps to take when running the program
-    long steps = 100000;
-
-    for (int i = 0; i < iters; i++) {
-      long startTime = System.nanoTime();
-
-      // Reset the CPU (does not clear memory)
-      cpu.reset();
-
-      for (int j = 0; j < steps; j++) {
-        cpu.step();
-      }
-
-      long endTime = System.nanoTime();
-      long diff    = endTime - startTime;
-
-      sum += diff;
-    }
-
-    long totalSteps = steps * iters;
-    long avgStep    = sum / totalSteps;
-
-    System.out.println("Total instructions executed:  " +
-                       String.format("%,d", totalSteps));
-    System.out.println("Total time taken:             " +
-                       String.format("%,d us", sum / 1000));
-    System.out.println("Average time per step:        " +
-                       avgStep + " ns ");
-  }
-
-  public void profileMemoryReads() throws MemoryAccessException {
-    // Create a bus.
-    Bus b = new Bus(0, 65535);
-
-    try {
-      // Create eight devices, each 8KB, to fill the bus.
-      b.addDevice(new Memory(0x0000, 0x2000)); // 8KB @ $0000-$1fff
-      b.addDevice(new Memory(0x2000, 0x2000)); // 8KB @ $2000-$3fff
-      b.addDevice(new Memory(0x4000, 0x2000)); // 8KB @ $4000-$5fff
-      b.addDevice(new Memory(0x6000, 0x2000)); // 8KB @ $6000-$7fff
-      b.addDevice(new Memory(0x8000, 0x2000)); // 8KB @ $8000-$9fff
-      b.addDevice(new Memory(0xa000, 0x2000)); // 8KB @ $a000-$bfff
-      b.addDevice(new Memory(0xc000, 0x2000)); // 8KB @ $c000-$dfff
-      b.addDevice(new Memory(0xe000, 0x2000)); // 8KB @ $e000-$ffff
-    } catch (MemoryRangeException ex) {
-      System.err.println("Memory Range Exception! " + ex.getMessage());
-      return;
-    }
-
-    // Read memory
-    long sum = 0;
-    long average = 0;
-
-    long iters = 500;
-    for (int i = 0; i < iters; i++) {
-      long startTime = System.nanoTime();
-      // Read and assign to a buffer
-      int buf = 0;
-      for (int j = 0; j < 0xffff; j++) {
-        buf = b.read(j);
-        if (buf != 0xff) {
-          System.out.println("WARNING!  MEMORY SHOULD HAVE " +
-                             "BEEN $FF, WAS: " + buf);
-          System.exit(0);
-        }
-      }
-
-      long endTime = System.nanoTime();
-      long diff    = endTime - startTime;
-
-      sum += diff;
-      average = sum / (i + 1);
-    }
-    System.out.println("Average time to read 64KB: " + average +
-                       " ns (" + (average / 1000) + " us)");
-    System.out.println("Average time to read one byte: " +
-                       sum / (64 * 1024 * iters) + " ns");
-  }
-}