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PostPosted: Thu Aug 01, 2019 9:49 am 
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Joined: Sun Sep 19, 2004 11:12 pm
Posts: 21564
Location: NE Indiana, USA (NTSC)
Fisher wrote:
Some pictures of Goldeneye 007, wich has a 4K EEPROM can be seem here.

Every time I clicked anywhere on the linked page on tcsr2001.tripod.com, it instead opened a full-screen pop-up window.

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Attachment:
hublmedia_popup.png
hublmedia_popup.png [ 774.62 KiB | Viewed 1916 times ]

Is this expected?

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PostPosted: Thu Aug 01, 2019 10:07 am 
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Joined: Sat Jul 04, 2015 9:58 am
Posts: 958
Location: -29.794229 -55.795374
That`s strange, for me it is working normally:
Attachment:
File comment: Site
Site.png
Site.png [ 220.44 KiB | Viewed 1914 times ]

I`m uploading the pictures of the Goldeneye`s PCB:
Attachment:
File comment: PCB
cbfront.jpg
cbfront.jpg [ 81.99 KiB | Viewed 1914 times ]

Attachment:
File comment: PCB Back
cbback.jpg
cbback.jpg [ 54.17 KiB | Viewed 1912 times ]


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PostPosted: Thu Aug 01, 2019 11:10 am 
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Joined: Sun Apr 13, 2008 11:12 am
Posts: 8539
Location: Seattle
tepples wrote:
If N64 games' save EEPROM indeed uses JOYBUS, it's either 1-Wire (good) or a custom part (unfortunate).
JOYBUS is a proprietary protocol, not 1-wire. Unlike 1-wire, the falling edge is sent by whatever's talking, not the host. And it's faster.

Fisher wrote:
AFAIK the EEPROM part number is BU9850.
There are four serial EEPROMs used in the N64:
BU9850, BK4K - both 4kibit
BK16DH, BK16DF - both 16kibit
The two on the left behave the same subtly different way from the two on the right. Normal games don't care. I'm told that at least one ROM hack has used the difference as a kind of DRM.

Quote:
I've found a package with 10 for sale on [Aliexpress.]
Those are used part pulls, if you care.


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PostPosted: Wed Aug 07, 2019 12:08 pm 
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Location: -29.794229 -55.795374
Just to record, the cartridge arrived today and it's working pretty fine, thanks guys!

lidnariq wrote:
Those are used part pulls, if you care.

Damm! Certainly taken from other N64 cartridges. :cry:


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