| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 618.1 | | BTOVT::BAGDY_M | Still in a dense fog I see | Wed Mar 27 1991 09:55 | 9 |
|
Doesn't the UK run on 50Hz AC ? Not sure, but this could
also have an effect on the module in the cartridge, since the
US runs 60Hz. I know it all gets broken down to DC inside
the NES, but there still may be a conflict.
Anyone know any more about this ?
Matt
|
| 618.2 | US NINTENDO - UK CONVERSION | SUBURB::REXA | | Wed Mar 27 1991 10:16 | 9 |
|
HAS ANYONE EVER OPENED ONE OF THESE CARTRIDGES UP ACCIDENTLY.....
LIKE STEPPING ON ONE OR SOMETHING?? IF SO WOULD YOU BE ABLE TO
ADVISE HOW I WOULD BE ABLE TO MODIFY WHAT GOES ON IN THERE TO CHANGE
A VOLTAGE.....OR ANYTHING......SO THAT I CAN USE THIS U.S. CARTRIDGES.
FRUSTRATED OF READING,
ALF.
|
| 618.3 | nothing to do with the games | HOO78C::KNOL | isn't every bug a bit wrong | Thu Mar 28 1991 07:46 | 10 |
| what are the symptoms if you use the US cartridge's ?
Do you see them switch on and off? then you have to modify your
computer (look at note 74) The tv system is not in the cassettes but
in the computer's RF section.
I've been using US games with no problem at all (besides from modifying
the NES computer) and we use the PAL system 625 lines 50 hz.
jan
|
| 618.4 | Have you tried.... | YUPPY::ELLERYI | Whither my Mickey Mouse Slippers ? | Fri Apr 12 1991 06:41 | 13 |
| Have you tried PC Engine Supplies/Console Concepts ? They will alter
UK console to take the US cartridges, as has been said the problem is
not the type of modulation used, but the pin arrangments in the
cartridge. Having the work donw will of course invalidate any NIntendo
guarentee, but Console Supplies will usually support you. The type
of modulation can be eliminated by using an RGB monitor, and the
cartridge will still not work. I can't vouch for the conversion, but
I'm sure several people in the conference would be interested in your
experience if you try it.
Ian Ellery
London Ultrix Team
|
| 618.5 | More on UK to US conversion... | MOVIES::ILES | Mike Iles - VAX/VMS development | Mon Apr 15 1991 11:07 | 29 |
| I too have a converted UK NES which accepts US games. Before applying the mod
explained earlier in this notesfile, and, being an engineer, armed with an
oscilloscope and a US cartridge which had been converted by Nintendo UK, I did
some investigation into the mechanics of it all.
Basically, the mechanism which prevents US cartridges running on UK machines
and vice versa has nothing to do with 50Hz, 625 lines or anything of that nature.
Esentially Nintendo have fitted a hardware interlock to their game cartridges
which is unique to the geography in which they sell them. The console issues
a coded signal which is unique to the geography in which its is sold and which
is passed to the cartridge which is loaded. This signal is processed by an
integrated circuit in the cartridge (the IC is unique and licensed to Nintendo)
which then returns a signal back to the games console which is used to decide
whether to let the game run or not. The outging signal from the console and the
cartridge which recieves it need to be compatible for the game in that cartridge
to be allowed to run by that console.
The switch modification described earlier somehow defeats this check by
temporarily disabling the outgoing signal. But, as has been pointed out, the
timing is critical as regards when the switch should be pressed to enable the
game to run.
I think the crux of the matter is licensing. The correct special chip is
required in each games cartridge to send the correct signal back to the games
console. Only Nintendo supply such chips and thus (in theory) have control over
who supplies cartridges for what console in what market.
-Mike-
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