[lunixbochs]

I had several nitpicks with mine, but realized once the learner starts asking questions about gaps they're in a pretty good place to find an answer on their own.

I do agree flags is less obvious, but also takes a bit of space to list what kind of flags one might see:

"jump if equal" is facilitated by an implicit "flags" register which is set after most arithmetic or comparison operations like "sub". Possible flags include:

- carry: the last arithmetic operation overflowed

- zero: result of the last operation was zero

- parity: result of the last operation was odd

- sign: result of the last operation was negative