[Coco] 26-3022 disk interface question

[Arthur Flexser]

Sure, you can't just load it in from cassette to the $8000 address it is
supposed to occupy.  But a cassette program could readily be written to
copy the Color Basic ROM to RAM, then copy the Extended Basic code to RAM
at $8000 (after loading a copy in from cassette to some lower address), and
then simulate a cold start into Extended Basic.  Probably not worth the
trouble to do so, though, since an adapter plus an EPROM, or an original
Extended Basic ROM, would do the job so much better.

I recall doing something similar with Disk Basic when I still had a
cassette system, just out of curiosity rather than for any practical
benefit of having Disk Basic commands available with no controller or disk
drive for them to act on.

Art

On Thu, Jun 11, 2015 at 5:11 PM, Barry Nelson <
barry.nelson at amobiledevice.com> wrote:

> No, you can not load it from cassette.
> 1) You do not have enough ram on a 16k machine to do that.
> 2) Even if you did have enough ram, the rom has position dependent code,
> so the ram is not at the right address.
>
> On Jun 11, 2015, at 3:22 PM, coco-request at maltedmedia.com wrote:
>
> > Date: Thu, 11 Jun 2015 01:29:57 -0700
> > From: "K. Pruitt" <pruittk at roadrunner.com>
> > To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> > Subject: Re: [Coco] 26-3022 disk interface question
> > Message-ID: <017a01d0a420$d173a470$0200a8c0 at Desktop1>
> > Content-Type: text/plain; format=flowed; charset="utf-8";
> >       reply-type=original
> >
> > There are a few CoCo 2's on eBay right now with a buy it now option in
> the
> > $49.95-59.95 range.
> >
> > It's eBay, so it's a coin toss as to if all the chips are actually in the
> > CoCo.
> >
> > Would it be possible to load Extended Color Basic from a cassette? It
> would
> > have to be reloaded each time it was used, but would it be do-able?
>
>
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