TI-H: Re: SF 92 and Expander SF II with sound
[Prev][Next][Index][Thread]
TI-H: Re: SF 92 and Expander SF II with sound
>I know I just mailed you but one last question. Will he give the
schematics
>out for the Expander Up. Also then could I develope somthing that
works
>like it. If I made the assembly software for th 92 would the SF work?
>
Possibly, you could make a fargo driver for the SF, but i wish you luck.
The TI-92 has a few dificulties with direct link port opperation. I
think it is possible to do it, but no one has, plus it is discontiued,
and with a working prototype out there, it would not be a very useful
plan. I did however want to see if an Amtel chip could work. And I2C
interface could make it possible and allow multiple chips to run. It
would use a very small interface, and is already developed. You could
problably even add a 1, 2, possibly even a 4 bit speaker that would work
with it and could run SIMULTANEOUSLY and because the I2C chip is
bidirectional, it may be possible to record sound using the speaker as a
mic??? I don't know it it would work, but I2C is a powerful interface. I
think someone should consider it. I would even build a prototype if I
could get the chips and a driver made.
__/|
_________ _______/\/\___________| ||
D___| |_______/\/\___| ____| || Speaker
C___| Paralel |_______/\/\___| / |__||
G___| I2C |_______/\/\___| - \|
|interface|__|<__ _____
+___| chip |__>|__| |
-___| |______|Amtel| Memory chip
|_________|______|_____|
| |
+ -
A buffer may be necesary to run the memory chip and the speaker, to keep
signals flowing directly. The speaker may need a latching chip to keep
it from clicking between reads and writes, but it could be possible.
Richard Piotter
e-mail: richfiles@hotmail.com
home page: <A
HREF="http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html">The
Richfiles</A>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com