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FamiTracker > General > FamiTracker Talk > I'll play your NSF on a real NES Owner: Aeon New post
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Posted: 2010-04-03 05:11 Reply | Quote
modusponens

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#5192
Yeah, and it's strange that they wouldn't just do that themselves if that's all you had to do. I mean, I don't know much about electronics and stuff, but a resistor's gotta cost no more than a few cents, right?

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Posted: 2010-04-04 00:53  (Last Edited: 2010-04-04 00:54) Reply | Quote
TechEmporium

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#5203
It all depends on how the firmware is programmed & what path the voltage takes as a result of the firmware.

In this case, it looks like some sort of a current-limiting resistor; it's trying to latch a certain signal onto one of the microcontroller's pins from yet another pin.

Resistors are only a few cents (I can buy a pack of ten 4.7 Kilohm resistors from any lokal electronics component store for only 50 cents, without mark-up). The only thing I'm wondering is why should it use 4.7 Kilohms instead of a simple 1 Kilohm resistor.

Thanks for the snapshot, tadpole.

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Posted: 2010-04-04 04:06 Reply | Quote
ImmortalMexican

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#5210
I'd like for you to test mine as well.


Posted: 2010-04-04 04:37 Reply | Quote
TechEmporium

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#5211


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Posted: 2010-04-08 02:18 Reply | Quote
hpizzle

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#5314
so let me get this straight. powerpak can support say mmc5 - but it requires some hardware modding?

Posted: 2010-04-08 02:56 Reply | Quote
TechEmporium

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#5316
Yes; it's really because of the way the circuitry's designed.

Some circuits can provide different features by simply hooking up a current-limiting resistor so that it can change voltage states. This would cause whatever logic chips & microprocessors are on the board to react differently to this voltage change.

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Posted: 2010-04-08 04:02 Reply | Quote
Rushjet1
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#5323
well i think it's that the powerpak emulates the expansions and shoves them out on (what would be) some unused pin or something like that, and you're bridging that pin to where the FDS would have had the expansion sound go. the powerpak itself doesn't have the actual expansion hardware on it (that'd be pretty damn expensive).

Posted: 2010-04-08 04:05 Reply | Quote
TechEmporium

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#5324
However, by looking at the board's image, the 2 pins on the MCU are in use (since you can trace the pins to different areas of the cartridge).

Like I've said, it's a current-limiting resistor that's used to control the MCU's logic states by varying the voltage across the resistor.

(I remember having to do this in a few of my electronics projects too, both at home & in my college.)

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Posted: 2010-04-09 06:43  (Last Edited: 2010-04-09 17:41) Reply | Quote
rmk



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#5380
NES PowerPak ?
can you record for me?


my email : emailme.rmk@gmail.com

thanks before .


Attachments:
petrichore.nsf (16 Kb)
moronance.nsf (18 Kb)
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