[Coco] Checking for the presence of the S/SC

[Rietveld Rietveld]

Thank you

I didn't like how the program wasted valuable time sending text to my speech sub routine even when no cart was present

Sent from my BlackBerry 10 smartphone.
  Original Message
From: tim lindner
Sent: Friday, June 2, 2017 3:15 PM
To: CoCoList for Color Computer Enthusiasts
Reply To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Checking for the presence of the S/SC


On Fri, Jun 2, 2017 at 11:58 AM, Rietveld Rietveld
<rietveldh at hotmail.com> wrote:
> Hi. Is there a way for a program to PEEK for the presence of the SS/C. I know a lot of older games
> would ask (prompt) you if you were using the speech sound cart.  ‎I would like the program to auto
> detect it


Write 1 then 0 to $ff7d. This will reset the S/SC.

Immediately start reading $ff7e:

If it goes from $7f to $ff, the S/SC is present.
If it stays $ff then there is no S/SC.


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tim lindner

"Proper User Policy apparently means Simon Says."

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