[Coco] Gal Logic

[Mark Marlette]

At 10:11 AM 1/30/2004 -0500, you wrote:

James,

I agree and disagree depending on the target. GALS are under $1 and if they 
will work then that is what I'll use. I use Altera's Max Software and that 
is free as well. I bought The DataMan 48LV programmer, that is what was 
$1300 plus some adapters. It does almost everything and that is what I 
needed. EPROMs, PAL, GALS, MPU, CPLD, serial EPROMs, etc.... Have used them 
all here at Cloud-9. New designs use JTAG programmers which I designed my 
own off of an Altera design. Improved and self powering with multi-voltage 
support. Altera's programmer for their free software is still $150. Haven't 
done Xilinx, Altera seems to do well in the CPLD arena for me and very cost 
effective.

I look at what the target is and I pick the product that fits the app the 
best. It would be easy from a training standpoint just to use one product 
line but I have yet to see one vendor have the solution for everything.

Mark
Cloud-9


>Mark
>
>My personal belief is to get away from a GAL and go to say one of
>the smaller CPLDs. Beisdes doing any glue ligic that he is thinking
>of there will always be a few other gates and stuff that can be
>thrown into a CPLD that makes it a cost effective means.
>
>Besides the CPLDs are jtag programable and the software to design
>them is free, well at Xilinx is.
>
>james
>
>
>On 29 Jan 2004 at 23:35, Mark Marlette wrote:
>
>Date sent:              Thu, 29 Jan 2004 23:35:03 -0600
>To:                     CoCoList for Color Computer Enthusiasts
><coco at maltedmedia.com>
>From:                   Mark Marlette <mmarlett at isd.net>
>Subject:                Re: [Coco] Gal Logic
>Send reply to:          CoCoList for Color Computer Enthusiasts
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> > At 11:55 AM 1/29/2004 -0600, you wrote:
> >
> > I do. Whgt development tools are you using? Abel? Most of what you are
> > trying to do are operators. What is your target device? How are you
> > going to program it once you have the equations written and compiled?
> > Programmers run $100- $50k depending on what you want to do and how
> > many. Mine is $1300.
> >
> > ??
> >
> > Regards,
> >
> > Mark
> > Cloud-9
> >
> >
> > >Does anyone know how to program a coco type clock generator
> > >into a GAL chip? I understand combinational logic fairly
> > >well, and am able to use "boolean" logic equations. My
> > >understanding of "clocked" OR "Registered" logic is a bit
> > >rusty.
> > >What I want do do is build a dual J-K flip flop E and Q clock
> > >generator in a GAL device not in TTL!
> > >Also is there a library somewhere of equations for flipflops
> > >etc?
> > >Eric
> > >KB0LXY
> > >
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