From cec2dc2b9f2598cdf341627fe2ab91c37d637eac Mon Sep 17 00:00:00 2001
From: WlodekM <wlodzio.maly@gmail.com>
Date: Wed, 2 Apr 2025 21:12:13 +0300
Subject: yea

---
 instructions/SBC.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 instructions/SBC.ts

(limited to 'instructions/SBC.ts')

diff --git a/instructions/SBC.ts b/instructions/SBC.ts
new file mode 100644
index 0000000..b6840fb
--- /dev/null
+++ b/instructions/SBC.ts
@@ -0,0 +1,11 @@
+import type The65c02 from "../65c02.ts";
+
+export default function (this: The65c02, mode: string) {
+    const addr = this.getAddr(mode)
+    this.io.address.set(addr);
+    this.read()
+    const mem = this.io.data.num();
+    const result = this.regA.num() - mem - (1-+this.carry)
+    this.flagZCN(result);
+    this.regA.set(result & 0xFF);
+}
\ No newline at end of file
-- 
cgit 1.4.1-2-gfad0