Add @let directive, start pondering interrupt control

1 files changed, 151 insertions, 52 deletions

diff --git a/digital/atk16.dig b/digital/atk16.dig
index ca4aa6d..056fbb0 100644
--- a/digital/atk16.dig
+++ b/digital/atk16.dig
@@ -104,30 +104,6 @@
       <pos x="280" y="340"/>
     </visualElement>
     <visualElement>
-      <elementName>Driver</elementName>
-      <elementAttributes>
-        <entry>
-          <string>Bits</string>
-          <int>16</int>
-        </entry>
-      </elementAttributes>
-      <pos x="140" y="-240"/>
-    </visualElement>
-    <visualElement>
-      <elementName>Tunnel</elementName>
-      <elementAttributes>
-        <entry>
-          <string>rotation</string>
-          <rotation rotation="1"/>
-        </entry>
-        <entry>
-          <string>NetName</string>
-          <string>PC_OE</string>
-        </entry>
-      </elementAttributes>
-      <pos x="140" y="-260"/>
-    </visualElement>
-    <visualElement>
       <elementName>Tunnel</elementName>
       <elementAttributes>
         <entry>
@@ -258,7 +234,7 @@
       <elementAttributes>
         <entry>
           <string>rotation</string>
-          <rotation reference="../../../../visualElement[14]/elementAttributes/entry/rotation"/>
+          <rotation reference="../../../../visualElement[12]/elementAttributes/entry/rotation"/>
         </entry>
       </elementAttributes>
       <pos x="0" y="-180"/>
@@ -320,16 +296,6 @@
       <pos x="280" y="300"/>
     </visualElement>
     <visualElement>
-      <elementName>Probe</elementName>
-      <elementAttributes>
-        <entry>
-          <string>Label</string>
-          <string>Bus</string>
-        </entry>
-      </elementAttributes>
-      <pos x="200" y="-280"/>
-    </visualElement>
-    <visualElement>
       <elementName>atk16_mem.dig</elementName>
       <elementAttributes/>
       <pos x="580" y="-220"/>
@@ -993,7 +959,7 @@ program(0x4051, 0x40a2, 0x029b)
       <elementAttributes>
         <entry>
           <string>rotation</string>
-          <rotation reference="../../../../visualElement[77]/elementAttributes/entry/rotation"/>
+          <rotation reference="../../../../visualElement[74]/elementAttributes/entry/rotation"/>
         </entry>
       </elementAttributes>
       <pos x="740" y="740"/>
@@ -1031,6 +997,103 @@ program(0x4051, 0x40a2, 0x029b)
       <elementAttributes/>
       <pos x="680" y="-380"/>
     </visualElement>
+    <visualElement>
+      <elementName>atk16_irc.dig</elementName>
+      <elementAttributes/>
+      <pos x="160" y="-280"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Probe</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>Bus</string>
+        </entry>
+      </elementAttributes>
+      <pos x="320" y="-320"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Tunnel</elementName>
+      <elementAttributes>
+        <entry>
+          <string>rotation</string>
+          <rotation rotation="2"/>
+        </entry>
+        <entry>
+          <string>NetName</string>
+          <string>PC_OE</string>
+        </entry>
+      </elementAttributes>
+      <pos x="160" y="-200"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Tunnel</elementName>
+      <elementAttributes>
+        <entry>
+          <string>rotation</string>
+          <rotation reference="../../../../visualElement[4]/elementAttributes/entry/rotation"/>
+        </entry>
+        <entry>
+          <string>NetName</string>
+          <string>MAR_IE</string>
+        </entry>
+      </elementAttributes>
+      <pos x="160" y="-220"/>
+    </visualElement>
+    <visualElement>
+      <elementName>DipSwitch</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>IRQ0</string>
+        </entry>
+      </elementAttributes>
+      <pos x="-160" y="-480"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Ground</elementName>
+      <elementAttributes>
+        <entry>
+          <string>rotation</string>
+          <rotation rotation="1"/>
+        </entry>
+      </elementAttributes>
+      <pos x="-180" y="-460"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Ground</elementName>
+      <elementAttributes>
+        <entry>
+          <string>rotation</string>
+          <rotation reference="../../../../visualElement[85]/elementAttributes/entry/rotation"/>
+        </entry>
+      </elementAttributes>
+      <pos x="-180" y="-440"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Ground</elementName>
+      <elementAttributes>
+        <entry>
+          <string>rotation</string>
+          <rotation reference="../../../../visualElement[85]/elementAttributes/entry/rotation"/>
+        </entry>
+      </elementAttributes>
+      <pos x="-180" y="-420"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Splitter</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Input Splitting</string>
+          <string>1*4</string>
+        </entry>
+        <entry>
+          <string>Output Splitting</string>
+          <string>4</string>
+        </entry>
+      </elementAttributes>
+      <pos x="-140" y="-480"/>
+    </visualElement>
   </visualElements>
   <wires>
     <wire>
@@ -1070,6 +1133,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="20" y="-260"/>
     </wire>
     <wire>
+      <p1 x="100" y="-260"/>
+      <p2 x="160" y="-260"/>
+    </wire>
+    <wire>
       <p1 x="40" y="260"/>
       <p2 x="60" y="260"/>
     </wire>
@@ -1111,6 +1178,10 @@ program(0x4051, 0x40a2, 0x029b)
     </wire>
     <wire>
       <p1 x="200" y="-140"/>
+      <p2 x="300" y="-140"/>
+    </wire>
+    <wire>
+      <p1 x="300" y="-140"/>
       <p2 x="480" y="-140"/>
     </wire>
     <wire>
@@ -1118,6 +1189,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="200" y="-140"/>
     </wire>
     <wire>
+      <p1 x="-180" y="-460"/>
+      <p2 x="-140" y="-460"/>
+    </wire>
+    <wire>
       <p1 x="900" y="140"/>
       <p2 x="920" y="140"/>
     </wire>
@@ -1226,6 +1301,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="20" y="-280"/>
     </wire>
     <wire>
+      <p1 x="120" y="-280"/>
+      <p2 x="160" y="-280"/>
+    </wire>
+    <wire>
       <p1 x="40" y="280"/>
       <p2 x="60" y="280"/>
     </wire>
@@ -1266,6 +1345,14 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="920" y="220"/>
     </wire>
     <wire>
+      <p1 x="-160" y="-480"/>
+      <p2 x="-140" y="-480"/>
+    </wire>
+    <wire>
+      <p1 x="-120" y="-480"/>
+      <p2 x="120" y="-480"/>
+    </wire>
+    <wire>
       <p1 x="900" y="160"/>
       <p2 x="920" y="160"/>
     </wire>
@@ -1294,6 +1381,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="540" y="-100"/>
     </wire>
     <wire>
+      <p1 x="-180" y="-420"/>
+      <p2 x="-140" y="-420"/>
+    </wire>
+    <wire>
       <p1 x="900" y="100"/>
       <p2 x="920" y="100"/>
     </wire>
@@ -1358,23 +1449,19 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="780" y="300"/>
     </wire>
     <wire>
-      <p1 x="100" y="-240"/>
-      <p2 x="120" y="-240"/>
-    </wire>
-    <wire>
       <p1 x="-40" y="-240"/>
       <p2 x="20" y="-240"/>
     </wire>
     <wire>
-      <p1 x="160" y="-240"/>
-      <p2 x="200" y="-240"/>
-    </wire>
-    <wire>
       <p1 x="-280" y="-240"/>
       <p2 x="-220" y="-240"/>
     </wire>
     <wire>
-      <p1 x="200" y="-240"/>
+      <p1 x="260" y="-240"/>
+      <p2 x="300" y="-240"/>
+    </wire>
+    <wire>
+      <p1 x="300" y="-240"/>
       <p2 x="400" y="-240"/>
     </wire>
     <wire>
@@ -1410,6 +1497,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="920" y="-120"/>
     </wire>
     <wire>
+      <p1 x="-180" y="-440"/>
+      <p2 x="-140" y="-440"/>
+    </wire>
+    <wire>
       <p1 x="900" y="120"/>
       <p2 x="920" y="120"/>
     </wire>
@@ -1446,18 +1537,14 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="440" y="60"/>
     </wire>
     <wire>
-      <p1 x="200" y="-280"/>
-      <p2 x="200" y="-240"/>
+      <p1 x="300" y="-320"/>
+      <p2 x="320" y="-320"/>
     </wire>
     <wire>
       <p1 x="200" y="-40"/>
       <p2 x="200" y="80"/>
     </wire>
     <wire>
-      <p1 x="200" y="-240"/>
-      <p2 x="200" y="-140"/>
-    </wire>
-    <wire>
       <p1 x="200" y="-140"/>
       <p2 x="200" y="-80"/>
     </wire>
@@ -1543,7 +1630,7 @@ program(0x4051, 0x40a2, 0x029b)
     </wire>
     <wire>
       <p1 x="100" y="-280"/>
-      <p2 x="100" y="-240"/>
+      <p2 x="100" y="-260"/>
     </wire>
     <wire>
       <p1 x="40" y="280"/>
@@ -1558,6 +1645,14 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="620" y="-100"/>
     </wire>
     <wire>
+      <p1 x="300" y="-320"/>
+      <p2 x="300" y="-240"/>
+    </wire>
+    <wire>
+      <p1 x="300" y="-240"/>
+      <p2 x="300" y="-140"/>
+    </wire>
+    <wire>
       <p1 x="-240" y="-340"/>
       <p2 x="-240" y="-220"/>
     </wire>
@@ -1582,6 +1677,10 @@ program(0x4051, 0x40a2, 0x029b)
       <p2 x="440" y="60"/>
     </wire>
     <wire>
+      <p1 x="120" y="-480"/>
+      <p2 x="120" y="-280"/>
+    </wire>
+    <wire>
       <p1 x="-60" y="-140"/>
       <p2 x="-60" y="-80"/>
     </wire>