Re: AppleVision video?

["Michael J. Mahon" <mjmahon@aol.com>]

Keith Rose wrote:
> Paul Schlyter <pausch@saaf.se> wrote:
>
> > The Applevision program was actually written in 6502 machine language.
> > However, back then it was very common to embed machine language programs
> > in Integer Basic program files, and Applevision was one of them.
>
>
> One thing that I've always wondered about the AppleVision program, was
> how the "HOME SWEET HOME" text was placed in the middle of the HIRES
> screen.  If I remember correctly, the only way to quit AppleVision was
> to hit the RESET key, which dumped you out of HIRES mode.  But when
> you did that, the "HOME SWEET HOME" text was still there.  As far as
> I know the only way to mix HIRES and text was at the bottom of the
> screen.
>
> Anybody know how that particular piece of magic was accomplished?

It's likely that Bob used a hi-res character generator to write
the text on the hi-res screen, and many of them use the PRINT
interface and echo whatever text is written to the hi-res screen
on the text screen.

-michael

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