Re: Write Signal on Disk II Question

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

Mike,

> The field being generated is never absent when writing, it is changed in 
> polarity for each one bit.  This is not a digital (on or off) signal.

    I understand.  It is easy to create data array to hold digital binary 
like digital_binary[100000] variable.  It may be possible to create 
analog_binary[100000] variable.  The analog_binary[100000] variable uses 
real number instead of integer number.  The real number can tell how much 
voltage in positive polarity, negative polanity and perhaps absence of 
polarity.  I am curious to see if it can be done in simulation to draw 
analog clock cycle.
    We know that we can be able to write more than two adjusted ZERO bits 
without any problem.  The Read Sequencer in the logic state sequencer ROM is 
designed to read only one or two adjusted ZERO bits maximum.  It could be 
possible to read three or more adjusted ZERO bits reliably if you redesign 
to modify state sequencer.  It may be 32 or 64 state sequencer instead of 16 
state sequencer.
    It is the reason why I am saying because I want to record all presence 
of read pulse and absence of read pulse into RAM.  Maybe, special controller 
card is capable of recording all instead of Disk II controller card.  What 
do you think?
    Is it true that copy-protected NIB image is less successful (like spiral 
scheme) to run on Apple II Emulator?  It is possible that all copy-protected 
images work on Apple II Emulator if recorded read pulses are used.

Bryan Parkoff