Expansion audio cartridge converter help

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radel999
Posts: 12
Joined: Sat Sep 15, 2012 1:34 pm

Expansion audio cartridge converter help

Post by radel999 »

Hello
I buyed a another cartridge converter but i wanna mod to work expansion audio but i have a problem
Where i must soldeing to work
Image
I Ask because i must put NES Cartridge back to label to work and i don't know where i must put the resistors
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Expansion audio cartridge converter help

Post by lidnariq »

I've marked pin numbers on your picture:
rwunsy_pins_marked.jpg
See https://wiki.nesdev.com/w/index.php/Cartridge_connector


I think they might have already connected pin 51 for you... but to be certain I'd have to see the other side.
radel999
Posts: 12
Joined: Sat Sep 15, 2012 1:34 pm

Re: Expansion audio cartridge converter help

Post by radel999 »

lidnariq wrote:I've marked pin numbers on your picture:
rwunsy_pins_marked.jpg
See https://wiki.nesdev.com/w/index.php/Cartridge_connector


I think they might have already connected pin 51 for you... but to be certain I'd have to see the other side.
Image [Converted to link because the image is too large for many users' displays. --MOD]

Here is a backside
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Expansion audio cartridge converter help

Post by lidnariq »

Yeah, they already connected audio for you. I've marked it in purple here:
fused_front_and_back_with_expansion_audio_marked.jpg
Unfortunately, I don't know if 72-pin connector pin 51 is actually used by anything. What pins you'll want to connect depends on what 72-pin cart with expansion audio you're trying to use... and depending on the exact hardware, you might need to cut traces and add a resistor.
radel999
Posts: 12
Joined: Sat Sep 15, 2012 1:34 pm

Re: Expansion audio cartridge converter help

Post by radel999 »

lidnariq wrote:Yeah, they already connected audio for you. I've marked it in purple here:
fused_front_and_back_with_expansion_audio_marked.jpg
Unfortunately, I don't know if 72-pin connector pin 51 is actually used by anything. What pins you'll want to connect depends on what 72-pin cart with expansion audio you're trying to use... and depending on the exact hardware, you might need to cut traces and add a resistor.
Using simple Cabel or using Resistors?
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Expansion audio cartridge converter help

Post by lidnariq »

It depends on the specific cart you want to play.
radel999
Posts: 12
Joined: Sat Sep 15, 2012 1:34 pm

Re: Expansion audio cartridge converter help

Post by radel999 »

lidnariq wrote:It depends on the specific cart you want to play.
I wanna run Everdrive on my Famicom/Pegasus
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Expansion audio cartridge converter help

Post by lidnariq »

The current trace (that I've highlighted in purple) connects "EXP9" to the famicom audio loop.

The Everdrive N8 appears to connect "EXP6" instead.

You can see what happens if you just add a wire shorting out EXP6 and EXP9. If it works, great.

If it doesn't, you may need to do a lot more rework.
radel999
Posts: 12
Joined: Sat Sep 15, 2012 1:34 pm

Re: Expansion audio cartridge converter help

Post by radel999 »

lidnariq wrote:The current trace (that I've highlighted in purple) connects "EXP9" to the famicom audio loop.

The Everdrive N8 appears to connect "EXP6" instead.

You can see what happens if you just add a wire shorting out EXP6 and EXP9. If it works, great.

If it doesn't, you may need to do a lot more rework.
Hmm, You can make a sheme how to connect in order to Adapter supports a expansion audio from everdrive?
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