From fd0bd2a1901fca162db325829b9398cd7e780c2f Mon Sep 17 00:00:00 2001
From: WlodekM <wlodzio.maly@gmail.com>
Date: Wed, 2 Apr 2025 19:25:05 +0300
Subject: another batch of instructions

---
 instructions/DEY.ts | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 instructions/DEY.ts

(limited to 'instructions/DEY.ts')

diff --git a/instructions/DEY.ts b/instructions/DEY.ts
new file mode 100644
index 0000000..4410abc
--- /dev/null
+++ b/instructions/DEY.ts
@@ -0,0 +1,8 @@
+import type The65c02 from "../65c02.ts";
+
+export default function (this: The65c02) {
+    const res = this.regY.num() - 1;
+    this.regY.set(res & 0xFF);
+    this.flagZN(res & 0xFF);
+    this.programCounter.increment();
+}
\ No newline at end of file
-- 
cgit 1.4.1-2-gfad0