ENIO EXP Board

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ENIO-EXP-v1 2-complete-small.jpg


Availability & Pricing

2013/01/28 - You can purchase the EXP board through www.nintendorepairhut.com. Take a look at the accessories page. He carries a nice variety of NES accessories and repair parts, so if you're looking to fix up your NES you can buy from him and save on shipping.


2012/08/12 - So I've received a few questions about availability and pricing. Yes - I do have some ready to be shipped. You will receive an EXP board and a 15-pin FC EXP compatible header cable. Please shoot me a PM on Nintendoage.com, username Chykn. Shipping within the US will be $5 for up to 8 sets sent via USPS Priority Mail.

QtyPriceDiscount
1 to 3$20/ea.(none)
4 to 7$18/ea.10% off
8+$16/ea.20% off


Components

NES EXP Connector
A custom 48-pin connector, currently made by hand.


16-pin IDC Header
Allows a header cable to be plugged in that is pin compatible with the Famicom EXP port. Famicom peripherals using the FC EXP port can be used on the NES without modification. Click here to see a demonstration of the Family Keyboard being used on a NES...

http://www.youtube.com/watch?v=MWro-RsDG8s


26-pin IDC Header
Interfaces to the ENIO CPU board. Provides interrupt (out), R/W (out), /CS (in), R/W (in) and 8-bit bus signals.


47K Resistors
These resistors both feed into the NES Audio In line. They allow audio to be input from NES cartridges via EXP6 (such as the PowerPak) as well as the Famicom EXP header. This way you do not have to perform a hardware mod on the NES to take advantage of carts with additional audio capabilities.

* If you're using 60-pin FC carts with a T89 adapter you'll still need to modify the T89 adapter to patch the sound through to pin 54 (EXP6) on the 72-pin cart connector. OR, if your T89 patches audio through on EXP2, you can solder a wire from the EXP2 signal on the J4 "Misc Signals" header to the Audio In pin on J6. The Audio In pin on J6 is tied to the actual NES audio in with a 47K resistor just like EXP6. Some of the mods I've read about call for a 100k resistor and a 4.7uF cap between the FC cart and EXP pin 3. Unfortunately I do not have any FC carts or an adapter to test with.


3-pin Power Header
Provides 5V, GND and Unreg VDD.


Pinouts

J2 - Famicom EXP Pin Compatible Header (16-pin R/A IDC)
1 -> GND
2 -> Audio In
3 -> IRQ
4 -> Joy2D4
5 -> Joy2D3
6 -> Joy2D2
7 -> Joy2D1
8 -> Joy2D0
9 -> Joy2Strobe
10 -> $4016.b2
11 -> $4016.b1
12 -> $4016.b0
13 -> Joy1D1
14 -> Joy1Strobe
15 -> 5V


J3 - ENIO CPU Board Header (26-pin R/A IDC)
1 -> 5V
2 -> GND
3 -> A15
4 -> $4016.b2
5 -> $4016.b1
6 -> $4016.b0
7 -> EXP9
8 -> EXP8
9 -> EXP7
10 -> EXP5
11 -> Joy2Strobe
12 -> Joy2D0
13 -> Joy2D1
14 -> Joy2D2
15 -> Joy2D3
16 -> Joy2D4
17 -> PRG D0
18 -> PRG D1
19 -> PRG D2
20 -> PRG D3
21 -> PRG D4
22 -> PRG D5
23 -> PRG D6
24 -> PRG D7
25 -> Unregulated VDD
26 -> IRQ


J4 - Misc Signal Header (16-pin unpopulated)
1 -> 5v
2 -> GND
3 -> EXP0
4 -> NMI
5 -> EXP2
6 -> EXP1
7 -> EXP4
8 -> EXP3
9 -> Joy1D4
10 -> Joy1Strobe
11 -> Joy1D2
12 -> Joy1D3
13 -> Joy1D0
14 -> Joy1D1
15 -> 4MHz CIC
16 -> IRQ


J5 - Audio and Video Out (3-pin unpopulated)
1 -> GND
2 -> Audio Out
3 -> Video Out

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