M ← M N/A (Not Allowed) N/A Direct memory-to-memory moves are not supported in x86-64 assembly. Direct (Absolute) mov eax, [0x1000] int x = *((int*)0x1000); Use a fixed memory address directly.

The upper half of the cart’s address space is always available, as it contains the 6502’s reset vector. But once the system is up and running, the lower half of the flash can be accessed by a ...