Use a larger FRAM device, like FM28V100, though you will need to make a small interface board to interface the 32pin SMD to DIP28. This gives you the option to add in 2 jumpers, allowing you to have 4 images in the FRAM, each totally separate.
i am limited with the n64 itself, its memory is 32kx8 arrangement. i don't know if it can accept larger ones.
it also requires parallel interface... too bad since spi and other interfaces are very cheap!
do you know any solution i can use to maneuver this? like using a 1 mbit ic but still let it act as 4 separate 256k (32kx8) ic... or create an interface to convert the parallel ram to spi ram and vise versa.
No you can not do this, flash is slower than normal Sram.
However you mention is not flash it is ferroelectric and according to the specs comparable with your SRAM.
I don't know enough of this type of storage to give you any valid advice
Benno
original is sram and existing solution is fram... but i ask if same size flash can be used.
upon checking again i only found this one:
https://www.digikey.com/en/products/detail/rochester-electronics-llc/N28F256A150/12129264the rest are otp eeproms and uv eeproms.... then comes the fram ones. fram\mram are very expensive.
this one is normal eeprom:
https://www.digikey.com/en/products/detail/rochester-electronics-llc/TMS27PC256-17FML/12135079it is marketplace but still very cheap.