[Coco] DAC sound output and keyboard input

[Mark McDougall]

On 20/06/2014 12:25 AM, John W. Linville wrote:

> Bit 7 is JOYIN (the comparator output), used to read the joysticks
> (via successive approximation ADC).  You probably should mask that
> when you are doing your "any key" check.

Doh! I don't know why I didn't realise this, since I've been staring at the 
Coco keyboard matrix for weeks now. In my defence, I'm intimately more 
familiar with the TRS-8 Model I matrix, in which rows are read rather than 
columns (and you can get all the arrows keys and spacebar in a single read!)

All sorted now, thanks!

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"