Re: IDE controller

[apple2pd@garp3.icaen.uiowa.edu (ground.ecn AppleII Librarian)]

In article <3ca42621$0$4994$626a54ce@news.free.fr>,
St�phane Guillard <stephane.guillard@steria.com> wrote:
>
>A friend of mine, Rich (rich@dwave.net), has found why all HDDs do not work
>with my diagram : the 6502 makes a read cycle before each write cycle on the
>bus. He has :
>- made a corrected schematic (added a flip flop to mask the read cycles out
>when doing write cycles),
>- burnt this stuff into an EPLD (instead of the handful of TTL chips I use),
>which enables a very small footprint for the IDE board,
>- made a ProDOS driver (no FAT, limited to 32 mb per partition, no DOS 3.3
>support, only 2 partitions), but it works, and you can boot off the HDD if
>you wish.
>
>By the way, as CompactFlash memory devices (for digital cameras etc.) have a
>IDE compatibility mode, he runs the interface with a 64MB compactflash,
>which gives 2 x 32MB Prodos partitions at very low power consumption.
>
>I don't remember the URL, but ask rich.
>

<http://dreher.net/CFforAppleII/ >


-- 

 --Steve  (apple2pd@ground.ecn.uiowa.edu)