More z80 timing fixes, 261 errors

2026-03-11 05:41:49 +00:00 · 2025-05-03 00:51:20 +01:00
parent e1aa220409
commit f4f4357a3e
1 changed files with 11 additions and 3 deletions
--- a/Z80/Z80.cs
+++ b/Z80/Z80.cs
@@ -771,11 +771,19 @@ namespace Z80
                    {
                        this.Bus.Address.Assign(this.HL);
                    }
-                    if (access == AccessLevel.ReadOnly)
+
+                    switch (access)
                    {
-                        _ = this.MemoryRead();
+                        case AccessLevel.ReadOnly:
+                            this.MemoryRead();
+                            break;
+                        case AccessLevel.WriteOnly:
+                            this.Tick();
+                            break;
+                        default:
+                            throw new NotSupportedException("Invalid access level");
                    }
-                    this.Tick();
+
                    // Will need a post-MemoryWrite
                    return ref this.Bus.Data;
                case 7: