I knew bytes were ambiguously sized, but I had thought a nibble/nybble was (A) always half an octet, and (B) a fun Apple coders magazine [0]. But sure enough,

I knew bytes were ambiguously sized, but I had thought a nibble/nybble was (A) always half an octet, and (B) a fun Apple coders magazine [0]. But sure enough, I was very wrong on (A): Apple II disk writes were done in "sets of 5-bit or, later, 6-bit nibbles" [1]. Thank you, chiph! [0] http://www.nibblemagazine.com/ http://www.nibblemagazine.com/ [1] https://en.wikipedia.org/wiki/Nibble#History https://en.wikipedia.org/wiki/Nibble#History