Testing the ability to trigger events for PDA and PDB as well as DD* masking.

test/unit.src.MOSCIA.spec.js

 
 
 describe("MOSCIA Tests...", function(){
-  var cia = new MOSCIA();
+  //var cia = new MOSCIA();
+
+  it("PD*/DD* Masking", function(){
+    let cia = new MOSCIA();
+    let pdaVal = 0x3C;
+    let pdbVal = 0xC3;
+    cia.onRead("PDA", (name, dda) => {
+      if (dda < 255)
+        cia.setPDA(pdaVal);
+    });
+    cia.onRead("PDB", (name, ddb) => {
+      if (ddb < 255)
+        cia.setPDB(pdbVal);
+    });
+
+    cia.RS = 0x02;
+    cia.DATA = 0x00;
+    cia.RS = 0x00;
+    expect(cia.DATA).to.be.equal(pdaVal);
+    cia.RS = 0x03;
+    cia.DATA = 0x00;
+    cia.RS = 0x01;
+    expect(cia.DATA).to.be.equal(pdbVal);
+    cia.RS = 0x02;
+    cia.DATA = pdbVal;
+    cia.RS = 0x00;
+    cia.DATA = pdbVal;
+    expect(cia.DATA).to.be.equal(0xFF);
+    cia.RS = 0x03;
+    cia.DATA = pdaVal;
+    cia.RS = 0x01;
+    cia.DATA = pdaVal;
+    expect(cia.DATA).to.be.equal(0xFF);
+  });
 
   it("Serial IO", function(){
+    let cia = new MOSCIA();
     let Input = (i) => {
       cia.SP = i;
       cia.CNT = 1;