Re: Disk II Phase Question

["Bryan Parkoff" <nospam@nospam.com>]

> One way to visualize the problem it is to imagine placing dots or
> blank spaces in straight rows on a piece of paper with a large-tip
> marker pen. The dots must be far enough apart so that they do not run
> into each other, and so that the blank spaces between dots can be seen.
> That limits the number of rows of dots that can fit on one piece of
> paper.
    Let me give you an example where bit stream are stored in each track.

Track 0: 1111111010101111101111111100111011001011111110101110111110101110
Track 0.25: 1111101011011110111110101101110010111110111110111100101011101101
Track 0.5: 1111101011101011110011011101111011111101101011101100110110111101
Track: 0.75: 
1111110110101110101110111100110111101111101011101101111011111010
Track 1: 1111111010101111101111111100111011001011111110101110111110101110
Track 1.25: 1111101011011110111110101101110010111110111110111100101011101101
Track 1.5: 1111101011101011110011011101111011111101101011101100110110111101
Track: 1.75: 
1111110110101110101110111100110111101111101011101101111011111010
Track 2: 1111111010101111101111111100111011001011111110101110111110101110
Track 2.25: 1111101011011110111110101101110010111110111110111100101011101101
Track 2.5: 1111101011101011110011011101111011111101101011101100110110111101
Track: 2.75: 
1111110110101110101110111100110111101111101011101101111011111010

    Do you notice that Track 0 and Track 2 are valid for data?  How can you 
assume where 1/4 track and 1/2 track get data from?  Are bit streams in 
separate path?  Please explain what do you mean head has large gap for 
reading and writing?  I don't see any gap between full track and half track.

Bryan Parkoff