Parse TriCore instructions from hex in node.js

parse-tricore-instructions.js

const parseInstructions = (input) => {
  const instructions = []
  let i = 0
  while (i < input.length) {
    const instructionLow = input.readUInt16LE(i)
    const is16Bit = (instructionLow & 0x01) === 0x00
    if (is16Bit) {
      instructions.push(instructionLow)
      i += 2
    } else {
      const instructionHigh = input.readUInt16LE(i + 2)
      const instruction = ((instructionHigh << 16) | instructionLow) >>> 0
      instructions.push(instruction)
      i += 4
    }
  }
  return instructions
}

const input = Buffer.from('3b 00 80 40 91 10 00 f6 9b 04 54 40 d9 ff 08 4a 82 05 20 08 82 16 40 a4 2d 0f 00 00 3b 50 44 04 54 af 9b 70 35 05 0b 0f 10 21 00 90'.replace(/ /g, ''), 'hex')
console.log(parseInstructions(input))