TTL SRAM interfacing

[Bjorn]

On Sun, 7 Jun 1998 cyborg0 at GlobalEyes.net wrote:
> I would like to know if it is feasible to just feed the output of the
> binary counter into the address lines of SRAM, and, in turn, have the
> SRAM data out feed into a ADC.

Yes you can simply connect the binary counter to the sram adress inputs.
The data bits should be connected to your _DAC_ for output, and ADC for
storing values. You could have a digitast button or something for stepping
and pulsing the write strobe. Make sure the ADC doesnt drive the data bits
while the SRAM is in output mode.

> I decided that I only need perhaps 4-6 bits to represent 0 to 5v
> accurately, therefore, I would use the remaining MSBs to select the
> pattern. 

It makes more sense to use the upper address bits to select pattern.

> Whats cool if this works is that I could also get a bigger SRAM (say,
> oh, 16 bit or something) to be able to store other types of data per
> step, say, portmanto enable, extra gates, extra CVs, or have more
> pattern memory..

Go ahead. It's more flexible to use a microcontroller but if you dont have
the resources to program one, you can probably have some fun with just an
sram. 

/Bjorn