Re: Prototype card and info needed for project

["Robert L. Doerr" <rdoerr@bizserve.com>]

> I'm attempting to build a digital I/O card to run on an apple II, using
> either an 8255 or a 6821 chip. An Apple II makes a considerably more
> flexible controller than a Basic Stamp, and it can store its data on
> disk for later transfer to another computer.
> 
> However, I need a prototype card for the A2 slot, and some details
> about the electronics of connecting the 8255 to the bus. The card can
> be memory mapped, as I don't need any ROM routines. The 16 bytes per
> slot between C900 and C100 should be enough. I can see how to decode
> the address lines, but do I use the device select or the slot select
> pins, both, or something else?
> 
> Does anyone know a source of prototype cards for the Apple II?
> 
> Does anyone know the details of interfacing this sort of card? Or where
> the info can be found?
> 
> Thank you;
> Mike

Mike,

I had a bookmark to a prototype card for the Apple.  Take a look at the
following link:

http://www.grin.net/~cturley/gsezine/GS.WorldView/v2000/Feb/MiscNew/A2FlashROMdrive/FlashROMdrv.htm

I hope this helps.

Robert