HT-8955 audio delay chip

[WeAreAs1 at aol.com]

In a message dated 7/27/98 12:47:58 AM, you wrote:

<<The UK magazine ETI (also sold in USA) has a Penfold stripboard
delay unit using this.. the chip is a 10bit A/D and D/A convertor
designed to interface with standard memory (in this case a 41256
DRAM). Would be very easy to hack this unit to have a cv controlled
delay unit up to 800ms.
BUT, who makes the chip? Anyone?

paul perry perplexed in melbourne australia
...ETI vol27 #6 22May-19June 1998 p19-24>>

Paul,

That chip is made by Holtek.  You can get info and PDF data sheets from their
website (http://www.holtek.com, I think...)  They have a couple of other kind
of interesting audio IC's.

I wonder if the chip can be tricked into addressing more than one 41256 RAM?
It would be nice to be able to get more than 800ms at full bandwidth.  Any
ideas?  Also, I couldn't quite figure out where to inject the clock in the ETI
circuit (for voltage control).  Can you see it?  (I don't have the magazine -
I just saw on a newstand a few days ago)

Best regards,
Michael Bacich