Would this chip do the job when used for an internal ram mod on ZX81?
https://www.jameco.com/Jameco/Products/ ... 921320.pdf
cy62256nll-70pxc good for ZX81 internal RAM Mod
Re: cy62256nll-70pxc good for ZX81 internal RAM Mod
Yes this and any other 5V 62256 will work fine.
In theory, there is no difference between theory and practice. But, in practice, there is.