Add comment to explain >>>

Author: bencoder

Processor.ts

@@ -381,6 +381,7 @@ export class Processor {
  const v1 = this.registers[A];
  const v2 = getAddress ? this.readMem(getAddress(operand)) : operand;
  //sbc should be the same operation as adc but with the bits of the memory byte flipped
+ //>>> coerces to an unsigned int so that the bitwise invert ~ works as expected, otherwise in JS ~0xff == -255
  const sum = this.internaladc(v1, (~v2 >>> 0) & 0xff);
  this.registers[A] = sum;
  }

test/.gitignore

@@ -0,0 +1 @@
+6502_functional_test.bin