Korg Poly800/EX800 Users

Well it's a bit quiet around here. But since I am trying to drag my 1980's hardware skills into 2010 and since I know there are some sharp people here...

I am looking to use a Lattice GAL16V8 for one of my new projects. Is anyone familiar with the techniques used to create the functions that are then assembled and then programmed into GAL's?

I am trying to get my head around the process. I may just be over complicating it all. But if there's anyone out there that can answer a couple of stupid questions, I will take the questioning offline if you put your hand up.

Thanks,

Mike.

Hello Mike,

To the best of my knowledge, GALs are rather outdated. Perhaps you would like to take a look at some modern CPLD/FPGA chips, depending on your needs. I am fairly familiar with these. Let me know if I could be of any help.

Regards
Tim

--- In korgpolyex@yahoogroups.com, "korgpolyex800" <korgpolyex800@...> wrote:

>
> Well it's a bit quiet around here. But since I am trying to drag my 1980's hardware skills into 2010 and since I know there are some sharp people here...
> 
> I am looking to use a Lattice GAL16V8 for one of my new projects. Is anyone familiar with the techniques used to create the functions that are then assembled and then programmed into GAL's?
> 
> I am trying to get my head around the process. I may just be over complicating it all. But if there's anyone out there that can answer a couple of stupid questions, I will take the questioning offline if you put your hand up.
> 
> Thanks,
> 
> Mike.
>

On Wednesday 04 August 2010, korgpolyex800 wrote:
> I am looking to use a Lattice GAL16V8 for one of my new projects. Is
> anyone familiar with the techniques used to create the functions that
> are then assembled and then programmed into GAL's?

Unless you absolutely only need to roll a few TTL gates into a single IC, 
you might consider going CPLD instead.  You'll get more things done in one 
device and the learning curve is just the same.

> I am trying to get my head around the process. I may just be over
> complicating it all. But if there's anyone out there that can answer a
> couple of stupid questions, I will take the questioning offline if you
> put your hand up.

GAL programming is not very complicated, it used to be done with special-
purpose languages like ABEL and CUPL that were not much more than a 
glorified way of specifying the logic table (for the combinatorial part, 
anyway).  A GAL in "simple" mode is just something that gives you a number 
of inputs to produce a (different) number of outputs, that's where the term 
Generic Array Logic comes from.  It soon turned out that you'd probably want 
a few registers on the outputs and feedback from the outputs back to the 
inputs, which (together with some more "doodads" to ease large-fan-in 
decoding, output enable and clock distribution) is what the "complex" mode 
is all about.


HTH,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Waldorf MIDI Implementation & additional documentation:
http://Synth.Stromeko.net/Downloads.html#WaldorfDocs