T. Joseph Carter 4461e45278 Add chapter 4 to root, fix bit rot ...

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?  :)

2017-07-20 18:53:26 -07:00

..

CH1#064000

Initial commit

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CH2#064000

Initial commit

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CH3.1#064000

Initial commit

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CH3.1T#040000

Initial commit

2017-07-20 13:13:03 -07:00

CH3.1T#040000.txt

Remove trailing whitespace, normalize dot commands

2017-07-20 15:45:47 -07:00

CH3.2#064000

Initial commit

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CH4#064000

Initial commit

2017-07-20 13:13:03 -07:00

CH5#064000

Initial commit

2017-07-20 13:13:03 -07:00

CH5#064000.txt

Remove trailing whitespace, normalize dot commands

2017-07-20 15:45:47 -07:00

CH6.1#064000

Initial commit

2017-07-20 13:13:03 -07:00

CH6.1#064000.txt

Remove trailing whitespace, normalize dot commands

2017-07-20 15:45:47 -07:00

CH6.2#064000

Initial commit

2017-07-20 13:13:03 -07:00

CH6.2#064000.txt

Remove trailing whitespace, normalize dot commands

2017-07-20 15:45:47 -07:00

CH7#064000

Initial commit

2017-07-20 13:13:03 -07:00

CH7#064000.txt

Remove trailing whitespace, normalize dot commands

2017-07-20 15:45:47 -07:00