Hall of Fame - Reserves: an attempt to present the perfect ZX Spectrum.

<b>Hall of Fame</b> - Reserves: an attempt to present the perfect ZX Spectrum.

(C) VTS'99
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            Reserves



   I, of course, both hands on the tire architecture, but it 
seems very strange the question in the form in which the 
article Ovsyannikov Andrew. The fact that the tire on the 
Spectrum has long existed - 5 years old - KAY256/2SL (c) 1994 
... KAY 1024turbo/3SL (c) 1998 by Nemo. And the people

Only now ochuhalsya?


   So, in my opinion, every company
its incompatible system connector.

   So, in Leningrad "," Krasnodar "and
etc., 48/tape system connector mounted for ease of 
installation, repair and commissioning works, and not for 
pirefirii. AND especially in the complex 48/tape can not speak

of all-in-one ;-).

   The first attempt to create a bus was at
ZX-Next, but the slot for some reason fell apart (I
did not know about that) and everything on the volume and
ended. Theirs standard has been sharpened by
ZX-Next, but it was already Bus!

   Then came KAY. PCB slot coincides with the Scorpion and the 
firm Sinclair ZX-Spectrum system connectors. Then

Zonov began to produce "expander buses",
because of his frail 6MHz processors can
pump just plug in the turbo 7MHz, but
not the "two slots," under which there are holes in the board. 
At Scorpion versus Sinclair minor correction, the KAY versus 
Scorpion added a pair of signals. Yes, by the way, Profi 
connector too similar to the Sinclair and Scorpion (almost).



   Next comes the statement that we all
sitting on the emulator, not on the Spectrum.
There is a concept - a clone. You do not call the Compaq PCs 
emulator because it's not IBM. And differences there to 
horseradish and more. The concept of a clone based on the 
flexibility of software. We say to the other CPU software will 
not work. Differences in clones eliminates the OS! 

   Thus, according to Nemo, with CPPS (of the line software 
compatibility) of less than 0.8 machine is no longer a clone of 
the platform (ZF'5, Transformer).


   Moreover, the principle of emulation is based on software or 
firmware methods when CPPS clearly less 0.8 or

completely vanishes.


   By the way, ZX-BUS of the Spectrum Expert -
analog bus KAY, and where there is output data from the two 
lines of RAM? .. 


   And, in general, - 2, 3, 4 ... line RAM
it's that horror movie? I have goose
skin crawled. Does anyone think of how it
produce and nafig it, generally, need. I
I do not know how to explain it on their fingers, but
production is a struggle, literally, for
each case, for each square centimeter of the PCB. Here converge 
not only economic and technological, but also Consumer rates up 
to reliability and maintainability. Remember - Spectrum should 
be as simple as possible. In This is the beauty of its 
architecture and circuitry, and this is its strength against 
the clever IBM PCs.


   Duc, you wanted to download data from the
memory very quickly? I doubt that you
will do this because you do not even
tried to work with what we have. And that
that there are still long enough. You have a head
to wear a hat, or what? You can in fact
avoid any problem, you just have to want
rather than megahertz count. Hack to death on your nose axioms:


   - Bus there!

   - DO NOT cut the comp!

   - Tire change! (In the sense that
cases like "Well just to add a posting
on the connector - there can be no).


   Next - Firmware machines (I
so understood that it 155RE3 and 556RT4) and
PZU'shki. Firstly, 155RE3 and 556RT4 - is
same PZU'shki. Secondly - in production
from them a headache. Themselves
RT4 and others like her have low reliability, 
low-programmability and high power consumption, and their 
diagnostics in the repair of very complex practically possible 
only by replacing a known good copy. Stay away from them away.



   Um, video, as in "Locke" wanted;)
Ha, but you know that there was a video processor, like the 
Amiga or a dandy. Someone will be able to make it back to us, 
eh? 


   Finally I advise you to read all the articles more closely 
Nemo in ZX-Format'ah, as well as radio amateurs 1 / 94 " p. 8. 
Can talk with yourself and Nemo. Even better would be if 
publish your correspondence to the journal.