ZX Hard #00 31 августа 1998

Железо

ZX + Dendy - a return to the printed.

 ZX + Dendy: return to the printed


(C) VTS'98


Here, sir, I propose to return to a forgotten topic. And 
forgotten completely in vain. Who does not know, read the 
ZX-Review 6 / 95, 1 +2 / 96, 4, 5 / 96 ("authoring").


Incidentally, the author can not find:
he resigned from the ZX on the PC.

All sorts of arguments in various media
(Eg, discussion ON_LINE, "Mosaic"
rates of about 32 ... 37) against Dendy
seem unconvincing.

In general, we need to understand all this thoroughly, and only 
then decide. 


Personally, I see only one essential
hardware problems: 'PAL-problem'.
It consists in the fact that DENDY PTSTS
in PAL is lifted straight from the crystal, nor any RGB!!!
If you play Dendy, obviously,
This problem is solved for you TV
with PAL-decoder.
If you are satisfied with black and white image,
This problem also does not arise.
But if you have RGB-monitor, will have
adapt to the special pribambas for decoding PAL.

There is still one thing.
Produced component now must rely on more or less contemporary
tv. Yes, and PAL-decoder are not
such and rarity. Therefore to solve
problems docking ZX-> TV developers
have plans to use the PAL-coder
(On the motherboard), so as to SECAM
this goal will not do (and not the PAL
to perfect - the color strip is still narrowed after all). In 
this case, 'PAL-problem' automatically withdrawn.

But in general, while you can, and b / w suffer -
something to come up with next.

There is still a problem: But is it necessary?

I have one in any case can not give
objective answer to this question, therefore, and brought it to 
public discussion. 

The first argument 'against' - quality graphics
not far ahead of Spectrum.
It is proposed to do with supervideokartu
Zilog'ovskim percent to 14 ... 33 Mhz and the VRAM 64 ... 256kb 
(using Peterskih bloat) and does not bind either

with some dandy.

Answer. Zhelezyaku this can be done,
BUT! buy it you will not become soft to write - too. Produce 
and maintain its no one. Yarim 'customers' on the highway

Peter-> All_world suggest staying
(Not yet sick PTs'shnoy (lamerskoy), fever, and until you have 
the money) and to understand that nothing good will, until 
there is no production in your town. And hang it (the piece of 
iron) is somewhere in the air. And the sooner we use such power 
(or maybe you PENtyum Give?) 

Interface, Dandy in itself is not complicated, it is possible 
to adjust production to place in conjunction with mice, etc. 
perifiriey. The graphics improved slightly, but there

important points:

a). savings performance Z80,
as all engaged 6502 + coprocessors. So much for the effects of 
a Digital music on Covox, etc.


b). programming of BASIC - the dream
author - by loaded to 6502
driver (see the ZX-revue) for beginners
programmers with a good appearance
prog.

There are more advantages:

c). the presence of another muz.protsessora with
FM-synthesis (looks like ours, but it is not at all :-( no disk 
imaging), as well as extra joysticks, guns, ETC. 

g). dendivskih pile of toys -> appearance
Transfer capabilities completely otupevayuschih
dandy-users on the Spectrum with the advent of
questions like "what's inside."

e). These toys are also almost ready to start software.

Some also resent the 'left' assembler 6502.

So, if you have understood the assembler Z80 (and not in the 
style of 'throwing a stack of sprites with sagely steep 
demomeykera fachit and all the other'), we learn any other - a 
trifling matter, our then-coding technology ;-). Can also be 
envisaged in cross-assembler similar to Z80 mnemonics

(And yet tolerate 'branded', using
Tasm_4.12 + 6502.lib (c) Rst7).
In general, the 6502 and taught there is nothing - it's more 
than elementary! 



Seems Uncle Rst7 something napartachil in
cross-assembler, (because the driver of
ZX-Revue 1 +2 / 96 does not want assemlitsya ...
And since manual for 6502 and I have no revue
6 / 95 I gave to the study of people, then
corrections will be in the next issue ...

<end of skipping>

Well, recently (actually, I have not seen significant 
controversy - only vzaimonaezdy) 

Some people think that the Dandy none
No, and it costs a lot of money. People, you
then, eh? Even if you personally do not have the miracle of 
Chinese genius, then the neighbors certainly exists. Be assured 
- it is everyone already tired and you've probably traded it on 
tape Speck multiple cassettes (and even a man on Spectrum 
should bring). In addition, the type of person that will 
produce interface, and will certainly offer

Boards themselves Dandy - it is profitable!


Finally I want to say that before
argue, need at least a little familiar with the subject of 
dispute. What has been in ON_LINE, repeat will not be here.

Reprinted ZX-revue I'm not going!
Read at least 6 / 95.


CRY FOR HELP:

Peoples, pliz, if you know at least something about the 
architecture Dendy nd more is written in the ZX-revue - drop me 
a line a couple of lines. Well very please!



PS: People from Yekaterinburg, respond! Quite possibly, you are 
haunted author (SL Veremeenko) The Dandy and have useful 
information. In the ZX-revue also refers to a mysterious 
pamphlet "Dendy under the microscope", published in

your town in 1995.

PPS: Address Veremeenko available
by comparing some revyushnyh
articles and advertisements somewhere in the thirties number 
online:). Just do not say it gave me a tip :-).


P.P.P.S.: Okay, we persuaded. Just do not
reach for it much like 'I want your
screw under the TR-DOS '- and then you will be sent to
away because Spectrum is not he has been doing, unfortunately 
... 

620017 Ekaterinburg
st. Old Bolsheviks, 24, kv.41
tel. (3432) 1/24/1934
Veremeenko Sergei Leonidovich.


13.08.98 19:42 msk is-dos