Those have got to be used part pulls. They were custom-built for the N64.calima wrote:but given how cheap I found the eeproms on aliexpress, and how many n64 gamers do not have the pak, eeprom should be cheaper
I'm not convinced it's practical to emulate the N64's flash saves. They're this cranky protocol that's different from how all other flash I've seen works—you have to fill the write-line-buffer before you tell it where to write it.than flash or battery+sram or fram.
(The only NV storage devices in N64 carts were two different 512B serial EEPROMs, two different 2KiB serial EEPROM, 32 KiB parallel battery-backed RAM, four variants of 128 KiB parallel flash, and an RTC with 8 bytes of bonus storage. No FeRAM. )
More specifically, what are you looking for?tl;dr please consider making a cheap, homebrew-targeting n64 board, even if such a board would only run a fraction of commercial n64 roms.
There already exist pre-tested schematics involving 3V word-wide flash, two 74'573s, two 74'193s, and a 74'00. I assume there's a way to reduce the cost of the latches and counters, but haven't really tried.