Re: How-to Nibble dump??

[russotto@wanda.pond.com (Matthew Russotto)]

In article <gpii6.28120$gb1.1133024@news4.aus1.giganews.com>,
Big Bird <geary@eris.io.com> wrote:
>In article <fQei6.41686$wu5.533320@e420r-sjo2.usenetserver.com>,
>Matthew Russotto <russotto@wanda.pond.com> wrote:
>< In article <3a8865be.2929027@news.wi.centurytel.net>,
>< Theusch Family <ntohsepuasmch@centurytel.net> wrote:
>< >Hello experts.
>< >
>< >I was wondering if someone could explain the way the RWTS (etc.)
>< >fetches raw nibbles from a disk controller card. What do the locations
>< >$C0E0-$C0EF have to do with this?
>< 
>< A book called Beneath Apple DOS is what you want.  More than you ever
>
>Except that the part about the physical encoding on the disk is
>wrong. The author corrects himself in _Beneath Apple ProDOS_.

I've never seen the correction, but I do know there's no clock bits in
the NRZi encoding -- which is why I added that exception.  However,
for reading raw nybbles, that doesn't really matter.

-- 
Matthew T. Russotto                                russotto@pond.com
"Extremism in defense of liberty is no vice, and moderation in pursuit
of justice is no virtue."