Now I'm thinking about the creative misuse of (non-existing) technology.
From the numbering scheme, the "4" in "RP2040" is log2(ram/16K). If we wanted to emulate a Lisa, we'd need 1MB of RAM, which would mean, at least, an RP2060 chip (log2(1024/16) = 6) or, more comfortably, an RP4x70 or RP2x80). Those parts, unfortunately, don't exist yet. Maybe they get inspired with their IPO and start making those parts.
From the numbering scheme, the "4" in "RP2040" is log2(ram/16K). If we wanted to emulate a Lisa, we'd need 1MB of RAM, which would mean, at least, an RP2060 chip (log2(1024/16) = 6) or, more comfortably, an RP4x70 or RP2x80). Those parts, unfortunately, don't exist yet. Maybe they get inspired with their IPO and start making those parts.