[Coco] Re: CoCo Monitor

Theodore Evans (Alex) alxevans at concentric.net
Sun Jun 27 11:56:24 EDT 2004

On Jun 26, 2004, at 2:40 PM, KnudsenMJ at aol.com wrote:

> In a message dated 6/26/04 6:28:27 PM Eastern Daylight Time,
> rtaylor at bayou.com writes:
>> The most famous
>>  dithering pattern we've seen on the CoCo is the "every other pixel"
> pattern
>>  which will produce red or blue.  In other words, if you plot the 
>> colors
>>  from left to right and fill the entire screen with
>>  black/white/black/white/black/white.... and so on, the resulting 
>> image
>>  would appear to be solid blue (or red).
> I'm wondering what happens if you change the "phase" between alternate 
> lines:
> B W B W ...
> W B W B ...
> B W B W ...
> Do you get purple?  Hard to believe I never tried that one -- Mike K.

The screen will look purple.  I did this a long time ago.  Of course 
since there is no artifact effect between adjacent lines the purple is 
actually alternating lines of blue and red.

Theodore (Alex) Evans | 2B v ~2B = ?

More information about the Coco mailing list