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Re: Grappler+ as IO card?



aiiadict@gmail.com wrote:
On Apr 30, 11:28 am, David Schmenk <dschm...@YUCH.gmail.com> wrote:

Its pretty much a direct connection.  I just had to run phi1 through an
inverter as the only other chip.  Why didn't Woz include phi2 on the
bus?  One of the great mysteries.  I agree with you and Michael that the
timers and interrupts are great features - the reason I put mine together.



yeah, pretty much direct connect.


http://rich12345.tripod.com/schematics/6522.html

Very nice--he buffers Phi0, delays it, and buffers it again!

Why not--inverters come in "hexes" anyway...  ;-)

-michael

NadaPong: Network game demo for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

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