working on new emulator framework

test/cli/6502/test6502sim.js

@@ -0,0 +1,68 @@
+
+var assert = require('assert');
+var fs = require('fs');
+
+var emu = require("gen/nemu/nemu.js");
+var MOS6502 = require("gen/nemu/cpu/MOS6502.js");
+var testbin = fs.readFileSync('test/cli/6502/6502_functional_test.bin', null);
+
+describe('MOS6502', function() {
+  it('Should pass functional tests', function() {
+    assert.equal(65536, testbin.length);
+    var mem = new Uint8Array(testbin);
+    var bus = {
+      read:  (a)   => { return mem[a]; },
+      write: (a,v) => { mem[a] = v; }
+    };
+    var cpu = new MOS6502.MOS6502();
+    cpu.connectMemoryBus(bus);
+    cpu.reset();
+    var s0 = cpu.saveState();
+    s0.PC = 0x400;
+    cpu.loadState(s0);
+    for (var i=0; i<100000000; i++) {
+      cpu.advanceClock();
+      var pc = cpu.getPC();
+      if (pc == 0x3469) break; // success!
+    }
+    console.log(i+' cycles, PC = $'+pc.toString(16));
+    assert.equal(pc, 0x3469);
+    // NMI trap
+    cpu.interrupt(1);
+    for (var i=0; i<20; i++) {
+      cpu.advanceClock();
+      var pc = cpu.getPC();
+      if (pc == 0x379e) break;
+    }
+    assert.equal(pc, 0x379e);
+    // hooks
+    mem.set(testbin);
+    cpu.loadState(s0);
+    var pcs = [];
+    var profiler = {
+      logExecute: function(a) { pcs.push(a); },
+      logRead:    function(a) { pcs.push(a); },
+      logWrite:   function(a) { pcs.push(a); },
+    };
+    // test hooks
+    var chook = new emu.CPUClockHook(cpu, profiler);
+    for (var i=0; i<10000; i++) {
+      cpu.advanceClock();
+    }
+    chook.unhook();
+    for (var i=0; i<100000; i++) {
+      cpu.advanceClock();
+    }
+    console.log(pcs.slice(pcs.length-10));
+    assert.equal(10000, pcs.length);
+    // bus hook
+    var bhook = new emu.BusHook(bus, profiler);
+    for (var i=0; i<10000; i++) {
+      cpu.advanceClock();
+    }
+    bhook.unhook();
+    console.log(pcs.slice(pcs.length-10));
+    assert.equal(20000, pcs.length);
+  });
+});
+