[Coco] colors

[William Astle]

I didn't say it couldn't.  I was saying you can only use 8 different foreground colours and you can only use 8 different background colours. I didn't say that both set of 8 had to be the same.

-------- Original message --------
From: Bill Pierce <ooogalapasooo at aol.com> 
Date: 2014-04-01  22:52  (GMT-07:00) 
To: coco at maltedmedia.com 
Subject: Re: [Coco] colors 
 

William, Sorry, you're wrong. The 80 col hardware text screen can show 16 colors at once.
Here is a screenshot showing 16 colors on an 80 col screen.
Notice the letters are in one color set and the color boxes are another. This is on Vcc but it looks exatly the same on my Coco 3 CM-8 sitting beside my PC monitor.

https://dl.dropboxusercontent.com/u/23059963/Pictures/Coco%20Pics/Color%20Palettes.jpg

My last email in this thread explains this.


Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens


My Music from the Tandy/Radio Shack Color Computer 2 & 3
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E-Mail: ooogalapasooo at aol.com




-----Original Message-----
From: William Astle <lost at l-w.ca>
To: coco <coco at maltedmedia.com>
Sent: Tue, Apr 1, 2014 10:37 pm
Subject: Re: [Coco] colors


The absolute only possible way to choose between 16 colours for 
foreground and background is to be operating in a 16 colour graphics 
mode. This is a fact of the hardware. In a hardware text mode, you 
cannot have more than 8 different foreground colours on screen at any 
given time. The same goes for background colours. (The trick for 
displaying all 64 colours at once is not useful here because it uses 
100% of the CPU.)

If register 2 is changing the foreground colour, that means that either 
the register numbers do not refer to the hardware register numbers in 
the context you are in or you are actually in a graphics mode. This, 
too, is a fact of the hardware.




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