Date   : Mon, 24 Mar 2008 15:54:03 +0000
From   : jgh@... (Jonathan Graham Harston)
Subject: New 6809 TUBE

John Kortink wrote:
> On 22 Mar 2008 19:52:00 +0000, Jonathan Graham Harston wrote:
> >Eurghhh!!! I *hate* designes that use PALs and GALs. You just have
> 
> What nonsense. Programmable logic is actually the preferred way,
> and is in no way an indication of complexity, let alone one of
> needless complexity. It's perfectly reproducible if the programmed
> circuitry is known,
 
*EXACTLY*!!!!
 
You are faced with a circuit diagram with an annonymous blob in
the middle of it with no knowledge of what it does. You have to
read the mind of the, often unobtainable, designer to discover
what it does.
 
If a circuit has an '02 and a '139 you can see completely,
exactly, and unambiguously exactly what it does.
 
> Do you really know so little about the subject, or do you just
 
I know enough about the subject having spent hughly frustrating
days and weeks when trying to design the BBC IDE interface faced
with millions (ok, exageration) of designs all predicated on PALs
or GALs, just to impliment "decode selected address".
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
There are three food groups: brown, green and ice cream.