Fixing the bitrot in chapter 4 after moving it meant looking at the OCR'd text
on archive.org, which is not good. Here's how not good it was:
> A tiL. (be it APPLESOFT, INTEGER, BINARY. or TEXT type) con,i a t a of one
> or more sectors containing data. Since the •• ctor i, the smallest unit of
> allocatable space on a di s kette, a file will use up at least one sector even
> if it i a Ie •• than 256 bytes long; the remainder of the sector is w • • ted.
> ThuB , a file containing 400 characters (or bytes) of data will occupy one
> entire sector and 144 bytes of another with 112 bytes wasted . Knowing these
> facts, one would expect to be able to use up to 16 times 35 times 256 or
> 143,360 bytes of space on a diskette for files. Actually, the largest file
> that can be stored is about 126,000 bytes long. The reason for this is that
> some of the sectors on the di a kette .uat be used for what is called
> ·ove[head- .
>
> <Figure 4.1>
>
> Overhead sectors contain the iMage of DOS which is 10ad •• 1 when booting the
> diskette, a list of the nallles and loes,lollll of the files on the diskette,
> and an accounting of the sectors which are free for use with new files or
> expon.lu". of existing files. An example of the way DOS uses lectDr. ,.
> given in Pigure 4 . 1 .
Yeah.... You see why I was so excited by the source text? :)
T. Joseph Carter