Tighten up the sequence associated with changing pin levels + fix persistent HALT/PC bug

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2026-04-21 12:16:55 +00:00 · 2019-09-06 22:50:21 +01:00
parent bc491884b0
commit f01e3e0430
7 changed files with 229 additions and 138 deletions
@@ -28,16 +28,22 @@ namespace EightBit

        public virtual void RaisePOWER()
        {
-            this.OnRaisingPOWER();
-            this.POWER.Raise();
-            this.OnRaisedPOWER();
+            if (this.POWER.Lowered())
+            {
+                this.OnRaisingPOWER();
+                this.POWER.Raise();
+                this.OnRaisedPOWER();
+            }
        }

        public virtual void LowerPOWER()
        {
-            this.OnLoweringPOWER();
-            this.POWER.Lower();
-            this.OnLoweredPOWER();
+            if (this.POWER.Raised())
+            {
+                this.OnLoweringPOWER();
+                this.POWER.Lower();
+                this.OnLoweredPOWER();
+            }
        }

        protected virtual void OnRaisingPOWER() => this.RaisingPOWER?.Invoke(this, EventArgs.Empty);