Moscow iron workers! Please respond!
ZXNet echo conference «hardware.zx»
Hello Titus
spe> Kostya, is there any information in general about turbocharging circuits on the 1515ХМ1? Although
spe> would not be diagrams, but historical facts.
Never came across it. But they tried to turbocharge the Baltic. But there's no point in that
a little, because due to WAIT, productivity drops by half. And it turns out that you need it
a fast Z80 that will eventually run at normal speeds. What if
change the logic of WAIT formation (at the same time shoveling half of the circuit, in
particularly a sample from RAM), then it will no longer be “Baltic”. With 1515ХМ1 it’s even more difficult,
It's all inside, and there's simply nowhere to solder it.
spe> And as for memory, if the machine is already 128K, then higher is possible through
spe> connector (even if static) - the main problem in this matter is
spe> second screen only.
You can hang anything outside, including static memory. But because
disabling (interacting) the built-in memory is not provided, then you will have to do everything
equally climb inside and either hang additional microcircuits, or
bring out the wires. And the screen is also questionable.
spe> 2 ng_dead on the topic of memory expansion: Caro posted the clone circuit on
spe> 1515ХМ1 with 256K, can be done by analogy.
The clone is called , but all the memory is already inside (on the board).And the management of additional pages is very unique.
Tit> By the way, at my house I have my first Specky - Delta (or maybe
Tit> Delta-C) 48Kb. Share the diagram?
Write in a personal message the type of computer (what kind of keyboard does have) and address
email where to send.
Hello Conan
Con> But if there is a desire to make improvements, then with the scheme
Con> 128> I’ll help.
By the way, I have my first Specky at home - Delta (or maybe Delta-C) 48Kb.
Share the diagram?
Hello, ng_dead
The disk drive controller is problematic even for a guru, but the mouse controller can be
try.
Hello, ng_dead
ng_> I was wondering... How realistic is it for a beginner (I have vague
ng_> ideas about which end to hold the soldering iron) assemble
ng_> floppy drive controller and Kempston mouse? Of course, so that
ng_> attached to the above-mentioned “car”...
It’s possible to assemble it, but where can you find a separate board for the controller now?
You can, of course, contact the corresponding “Flea Market” thread and demand
assembled controller, maybe someone has it lying around....
Better order a mouse controller from caro.....
Hello spensor
I was wondering... How realistic is it for a beginner (I have vague
ideas about which end to hold the soldering iron :) ) assemble the controller
floppy drive and Kempston mouse? Of course, so that this is attached to the above
"wheelbarrow"...
Hello, CHRV
CHR> Average working hours of a professional ironworker in Moscow
CHR> 300-400 rubles/hour, for soldering bells and whistles, and for setting them up
CHR> an immeasurable amount of time will be spent.
CHR> The second point is that in this case we mean not just
CHR> soldering, and RESEARCH on how to do what (for service manuals
CHR> there is no such thing as for bourgeois technology, and everything relies only on personal
CHR> experience). And the machine is not DESIGNED for expansion.
CHR> For a smaller amount, an amateur is ready to take on which thread (more precisely, he is ready
CHR> to take money from you), but the probability of success in this case tends to
CHR> zero.
Dear Captain Nemo, hello! How long have we been waiting for you on our forum!
:-))))))))))
Hello Conan
Con> But since disabling (interacting) the built-in memory is not
Con> is provided, then you still have to climb inside and either
Con> attach additional microcircuits or output wires. And the screen
Con> is also questionable.
Well, this is natural - where have you seen the domestic Spectrum without MGTF :) The screen is already
must be implemented on RUshki (if 128K), and on statics they are implemented only
banks 8 and above. Of course, about blocking the “on-board” memory when accessing
area C000-FFFF will have to be taken care of. In general, the job is not for a beginner :(
Hello, ng_dead
ng_> How realistic is it for a beginner (I have vague ideas about how
ng_> hold the soldering iron with the end) assemble the drive controller and
ng_> kempston mice?
With a soldering iron and everything else, the problem can be solved simply by trial and error.
errors. Once you get burned, another time you will do the right thing. Nothing unnecessary
there is no trick in this matter - you take a breadboard ("airplane"), solder it
the mikruhs required according to the scheme, and then you combine, again according to the scheme, the necessary ones
conclusions. And ultimately, you solder the device to the computer circuits (in the overwhelming majority
in most cases these are the feet of the processor). The probability of being "protected" in this case
quite high, as in any matter in life. But as the ancients said -
the one who walks will master the road.
Hello, kgbplus
kgb> Dear Captain Nemo, hello! How long have we been waiting for you on our
kgb> forum!
kgb> :-))))))))))
And you still haven't guessed it :)
Joke!
These are just evil realities from which you can’t escape!