[Coco] Color Error in VCC

[Bob Devries]

There must be some problem with Luis' VCC setup. I'm using version 1.42, and 
the example programme produces green characters on a black background (first 
two rows), black characters on a green background (next two rows), then 4 
rows of coloured blocks on a black background. This tallies with the "real" 
Coco3.

Regards, Bob Devries

----- Original Message ----- 
From: "Bill Pierce" <ooogalapasooo at aol.com>
To: <coco at maltedmedia.com>
Sent: Friday, March 09, 2012 5:50 AM
Subject: Re: [Coco] Color Error in VCC


>
> Mr Gault, did you run it on VCC? I don't remember seeing these colors on a 
> real Coco. Luis was running VCC and not a Coco. I'm out of town for the 
> rest of the week so I can't get to my Coco right now and compare. But what 
> I am seeing on VCC is (in the graphics blocks above 128):
>
> Green FG / White BG
> Yellow FG / White BG
> Blue FG / White BG
> White FG / White BG
> Cyan FG / White BG
> Magenta FG / White BG
> Orange FG / White BG
>
> In Jeff's Coco 2 Emul. All are the same except Background is BLACK
> In Jeff's Coco 3 Emul.  "   "     "      "        "             " 
> "     "
> In David's Coco 3 Em. "   "     "      "        "             " 
> "     "
> In David's Coco 2 Em. "   "     "      "        "             " 
> "     "
> In MESS Coco 2 Em. "   "     "      "        "             "           " 
> "
> In MESS Coco 3 Em. "   "     "      "        "             "           " 
> "
>
> In all my years of Cocos... 1, 2, and 3 ... Background color has ALWAYS 
> been BLACK
>
>
> Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Bill Pierce
> ooogalapasooo at aol.com
>
>
>
>
> -----Original Message-----
> From: Robert Gault <robert.gault at att.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Thu, Mar 8, 2012 11:02 am
> Subject: Re: [Coco] Color Error in VCC
>
>
> Luis Fernández wrote:
>
>   HI
> I found a mistake in the colors emulated by VCC.
> he error is basic and wonder to occur.
> A simple test program is
>
> 10 CLS
> 20 FOR A=0 TO 255
> 30 POKE 1024+A,A
> 40 NEXT
> 50 GOTO 50
>
> 
> http://luis45ccs.blogspot.com/2012/03/error-de-color-en-el-emulador-de-color.html
>
>
>
>
>
>
>
>
> Apparently my right colors are not correct
> coconut lit my TV and found the following
> color
> 0 Green
> 1 Yellow
> 2 Dark Blue
> 3 Purple or violet
> 4 White
> 5 green somewhat darker
> 6 Light blue, purple something
> 7 Orange
>
>
>
> Luis,
> Whatever you are seeing, it is not the result of VCC. I just ran a test 
> with a
> S Coco3 using both RGB and Composite 60Hz monitors. Before running your
> rogram, either the RGB or CMP commands were used to get an appropriate 
> color
> et. The colors displayed on the matching monitor were a very close match 
> to the
> colors displayed by VCC 1.42 on a Samsung SyncMaster 204B digital monitor. 
> The
> MP and RGB monitor colors were very close to each other but not a perfect
> atch, starting with the appropriate color set.
> Now with the real hardware, it was necessary to adjust brightness, 
> contrast,
> olor intensity, and tint. If that was not done, the colors were not quite 
> what
> hey should have been. That should not be a surprise as the Coco can't 
> exactly
> atch CMP and RGB colors given the small range of possible colors.
> The Coco3 and therefore VCC default to the CMP color set. There may be 
> small
> ifferences in color between NTSC and PAL sets or even 60 and 50Hz units. 
> Your
> rogram does not force the use of a specific color set, and it should if 
> you
> ant any chance of getting appropriate colors.
> Robert
>
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