Re: Apple ][ to VGA monitor adapter board - looking for best color decoding method

[sicklittlemonkey <Nick.Westgate@gmail.com>]

On Apr 10, 10:03 pm, ferd...@gmx.de wrote:
> On 10 Apr., 13:39, sicklittlemonkey <Nick.Westg...@gmail.com> wrote:> On Apr 10, 2:02 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
>
> > > It takes a peek into the future to know that the next pixel will
> > > extend the current color
>
> > Not if output lags input by 1 bit.
>
> > Emulators have done this in a reasonable manner for years with various
> > algorithms, so I don't see why the hardware solution we've all been
> > waiting for should be so much more limited.
>
> > Anyway, no-one else is complaing, so I guess I've had my say. ;-)
>
> Well, one needs to peek further into the future. The next pixel says
> whether the dot is green or white. But the dot after the "violet" dot
> determines whether this is a green dot or a green line. So one need to
> look 2 bits into the future. And in DHIRES this becomes 4 bits.
> This makes the amount of data explode - there are way to many
> combinations.
> I might be able to handle that on a second board but it is not going
> to fit on the present card. It barely fits how it is designed yet.
>
> Ferdinand

True, DHires is more complicated, even without the mixed or extended
DHires modes on the AppleColor RGB card.

I'd like to see a method 1 shot of Airheart if you have time.
Again, kudos for what you've accomplished.
People have been pining for such a card.

Cheers,
Nick.