BIT

1 files changed, 14 insertions, 0 deletions

diff --git a/instructions/BIT.ts b/instructions/BIT.ts
new file mode 100644
index 0000000..2367ba7
--- /dev/null
+++ b/instructions/BIT.ts
@@ -0,0 +1,14 @@
+import type The65c02 from "../65c02.ts";
+
+export default function (this: The65c02, mode: string) {
+    const location = this.getAddr(mode, [
+        'zero-page',
+        'absolute'
+    ]);
+    this.io.address.set(location);
+    this.read();
+    this.overflow = this.io.data.bit(6)
+    this.negative = this.io.data.bit(7)
+    const thing = this.regA.num() & this.io.data.num();
+    this.zero = thing == 0;
+}
\ No newline at end of file