Comment by vardump
8 hours ago
At 8 MHz, a 68k can execute at most 2M instructions per second. So the answer is going to be yes, if this manages to execute one 68k instruction per ~200 cycles.
I think executing an instruction is going to be closer to 20-50 cycles than 200, so it should be much faster than a real 68k CPU.
I think performance is likely to be in the ballpark of a 68040 @20 MHz, but that's just a guess. This would leave 20 cycles for each emulated instruction. With JIT you could reach 200 MHz+ comparable speeds.
Everything is coming from PSRAM including frame buffer (at 15 fps) so performance is going to be abysmal.
You should be able to cache hot code and data in the SRAM. Although it'd significantly increase complexity.