bitfield

1 files changed, 31 insertions, 0 deletions

diff --git a/65c02.ts b/65c02.ts
new file mode 100644
index 0000000..a7660b4
--- /dev/null
+++ b/65c02.ts
@@ -0,0 +1,31 @@
+class BitField {
+    bits: boolean[];
+    flip(bit: number) {
+        this.bits[bit] = !this.bits[bit];
+    }
+    setBit(bit: number, value: boolean) {
+        this.bits[bit] = value;
+    }
+    set(value: number) {
+        for (let bit = 0; bit < this.bits.length; bit++) {
+            const mask: number = 1 << bit;
+            this.setBit(bit, (value & mask) != 0)
+        }
+    }
+    num(): number {
+        let number = 0;
+        for (let bit = 0; bit < this.bits.length; bit++) {
+            const mask: number = 1 << bit;
+            if (this.bits[bit])
+                number |= mask;
+        }
+        return number;
+    }
+    constructor (len: number) {
+        this.bits = new Array(len).fill(false);
+    }
+}
+
+export default class The65c02 {
+    data: BitField = new BitField(8)
+}
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