[Coco] Homebrew CoCo Games

[Zippster]

Oh, ok.  After looking at how those control signals are connected on the CoCo1, I agree
there’s no mixing, just switching.  And changing the joystick input selection will change
the sound selection as well.

It’s too bad they didn’t do this differently so they were independent.  
Must have been done for reduced chip count I guess.

- Ed


> On Dec 14, 2015, at 1:04 PM, Darren A <mechacoco at gmail.com> wrote:
> 
> On Mon, Dec 14, 2015 at 11:48 AM, Zippster wrote:
> 
>> I only traced it back as far as the switches.  I didn’t look at the
>> control lines yet.
>> 
>> Is there a data sheet for the DAC?  The only thing I could find was a
>> block diagram.
>> 
>> - Ed
>> 
> 
> 
> Just the description of its function in the CoCo 2/3 service manuals.  The
> audio switch portion is the functional equivalent of MC14529B.
> 
> - Darren
>