Re: Carte Blanche

[mdj <mdj.mdj@gmail.com>]

On Apr 2, 11:47 am, srk...@gmail.com wrote:

> > This would enable it to be a real "chameleon card", since configurations
> > could be loaded into the card in a few seconds to alter its personality.
>
> I agree. I havent tried it (yet), but it is designed to behave this
> way. Just need to make sure the Apple II dosent rely on the card when
> its reconfigured, and that when the new design is loaded into carte
> blanche and goes active, that it applies itself back to the running
> apple II bus with a little courtsey (ie - the new design dosent decide
> assert reset!)

This is pretty high on my wishlist too. I had imagined the ideal way
would be a dipswitch/jumper that routed DEVSEL to a bitbanger
interface to JTAG rather than direct to the FPGA. This would mean a
user has to consciously decide to reprogram a card by flipping the
switch.

Having cards assert reset on powerup is certainly a possibility so I
figured a 'hard' solution was the way to go, but it sounds like you've
got it covered.

BTW, I'm very much looking forward to playing with one of these!

Matt