[Coco] 1980 CoCoCoding contest? (4K Color BASIC 1.0)

[Arthur Flexser]

The first poke plus the exec should give you the Color Basic startup screen
(with a message that says Color Basic) if it works as I hoped.  Again, on a
CoCo 1 or 2, it wouldn't work unless you ran a program that copies the ROMs
to RAM first.  If the EXEC &HA000 doesn't work, maybe try
POKE&H8000,0:POKE&H71,0:EXEC&HA027.  (I really should look at a Color Basic
disassembly.)

Art

On Tue, Dec 9, 2014 at 9:03 PM, Louis Ciotti <lciotti1 at gmail.com> wrote:

> I assume there is some other pokes that a coco 2 would need.  I tried them
> and the first gives me an OK prompt and the second gives me an OM error.
> This is on a 64K coco 2.
>
>
>
> On Tue, Dec 9, 2014 at 6:34 PM, Arthur Flexser <flexser at fiu.edu> wrote:
>
> > I think it'd be pretty easy to write a program to put a CoCo 3 into a
> mode
> > that is pretty much 4K Color Basic, so that contest programs could be
> > tested on a real CoCo.  It might be as simple as POKE&H8000,0:EXEC&HA000
> to
> > boot up Color Basic and then CLEAR 200,4096 to give it the memory of a 4K
> > machine.
> > (I was going to say CLEAR 200,&H1000, but I don't think "&H" is legal in
> > Color Basic.)
> >
> > Same thing on the CoCo 1/2 except you'd need to run a program to put you
> in
> > the all-RAM mode first.
> >
> > I'd be curious to know if that works, since I'm not certain that $A000
> > would be the right place to jump into the Color Basic ROM.  The first
> poke
> > is to knock out the "E" character at the beginning of the Extended Basic
> > ROM so that Color Basic's test for the presence of Extended Basic will
> > fail.
> >
> > Art
> >
> > On Tue, Dec 9, 2014 at 4:08 PM, Allen Huffman <alsplace at pobox.com>
> wrote:
> >
> > > > On Dec 9, 2014, at 2:50 PM, Rogelio Perea <os9dude at gmail.com> wrote:
> > > >
> > > > I'm in. Have a mint condition 4k Color Basic CoCo begging to be used
> > :-)
> > >
> > > I will *not* be pulling chips from my CoCo 1, so I'll be using Xroar or
> > > MESS or something ;-)
> > >
> > > If I could only figure out how to use MESS. When I get my CoCoSCD in,
> > I'll
> > > start working on tutorial pages on CoCoPedia, and parallel my work
> > setting
> > > up MESS, etc. I am hoping this will be a good distraction for me this
> > > winter. Not alot of great stuff going on in my real world right now :)
> > >
> > >                 -- A
> > >
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