Date   : Sat, 29 Oct 1983 17:10:28 EDT
From   : Keith Petersen <w8sdz@brl>
Subject: Re: QBAX Program Disappointing

It is my understanding that the CP/M "S2 byte" (extended extent byte)
actually uses only the lower nibble for the extended extent information
(this from Bruce Ratoff, a person I consider an expert on CP/M 2.2).
If this is so, the high-order bit being used by QBAX should cause no
problems unless the directory programs (SD71 in particular) are incorrectly
written to look at the whole byte instead of just the lower nibble.
I consider this to be a fault in SD71, not QBAX.
--Keith