Re: [misterhouse-users] Weeder/Relay/AMP based PA system

[bazyle2002 <baz...@nt...>]

Easy. Just group 8 pins using the "W" command and feed the outputs to 
4 off eight bit latches in parallel. Use another pin to latch the 
data into one device on the rising edge, and the other latch on the 
falling edge. Repeat for the other 2 latches with another i/o pin.
Hey Presto, 32 output lines using only 10 lines, and because you are 
not setting lines one at a time it is actually quicker. If that's not 
enough, keep adding latches up to 96 lines.
I can go into more detail if necessary.
Baz


--- In mis...@ya..., "Steve Switzer" <steve@s...> 
wrote:
> This could certainly work, but I may want to use speakers from the 
first set
> of relays as well as from the second set. :(
> I'm greedy, and if I can have 8 separate zones, I want 22! :)
>