[Coco] Basic 09 text display question.

[Wayne Campbell]

Don't forget about BASE. If you're set to BASE 0, the array elements are
0,1,2 not 1,2,3.

Wayne

On Tue, Jul 23, 2019, 10:10 AM L. Curtis Boyle <curtisboyle at sasktel.net>
wrote:

> There are a couple of ways. The easiest to read and follow would be to use
> RUN gfx2(“color”,foreground#,background#). You can also do with defining a
> couple of 3 byte arrays for foreground color and background color escape
> code sequences, and the do a PUT #1,arrayname). The latter would be
> slightly faster and take less memory, but not as obvious to what it does.
>
> You are correct in type 8 being 320 wide, 16 color. You can have the
> height as anywheres from 8 to 200 (in steps of 8), depending on what you
> created the window with.
>
> The default colors duplicates 8 colors twice (so palettes 0 and 8 are the
> same, 1 and 9 are the same, etc. - you can define your own with the palette
> command, both via gfx2 and PUT arrays like I mentioned above). The default
> colors for Coco 3 text and graphics modes are:
> 0&8 - white
> 1&9 - blue
> 2&10 - black
> 3&11 - green
> 4&12 - red
> 5&13 - yellow
> 6&14 - magenta
> 7&15 - cyan
>
> So, as one example from what you requested, to print the word RED on a
> black background:
> Method 1:
> RUN gfx2(“color”,4,2)
> PRINT “RED”
>
> Method 2
> DIM fcolor(3),bcolor(3):BYTE
> fcolor(1)=$1b
> fcolor(2)=$32
> fcolor(3)=4
> bcolor(1)=$1b
> bcolor(2)=$33
> bcolor(3)=2
> PUT #1,fcolor
> PUT #1,bcolor
> PRINT “RED”
>
> The first method is the easiest - but it will take some memory to load the
> GFX2 package, and then have the GFX2 parser go through the things you
> passed to it. The 2nd method does not require any external programs, and is
> faster, but harder to set up. (Once you have it set up, though, to change
> the foreground color to something else, you only have to do:
> fcolor(3)=[color#]
> PUT #1,fcolor
>
> (same with background, just change bcolor(3) instead, and PUT #1,bcolor)
>
>
> L. Curtis Boyle
> curtisboyle at sasktel.net
>
>
>
> > On Jul 23, 2019, at 9:35 AM, coco at jechar.ca wrote:
> >
> >
> > I was trying to figure out how I would have a basic09 program print to
> the screen.
> >
> > RED(in red)GREEN(in green)BLUE(in blue)HIGHLIGHTED(in Black text on
> Yellow Background) all
> > on a Black background.
> >
> > Also is there a record somewhere of which numbers display what color
> when building a PALLET.
> >
> > In my case I am working with a type 8 screen which I believe is
> 192x320(16color) and a 6x8
> > font witch provides 53 characters per line.
> >
> > Charlie.
> >
> > --
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> > Coco at maltedmedia.com
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> >
>
>
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