6502-emulator May 2026

The 6502 uses a 16-bit address bus, allowing it to address 64 KB of memory.

To start, you must define the data structures representing the CPU's internal state. Description (Program Counter) Points to the next instruction in memory. A (Accumulator) Used for all arithmetic and logic. X & Y (Index) Used for addressing offsets and loops. S (Stack Pointer) 6502-emulator

Holds the current stack location (usually at address $0100 ). (Status Register) Stores flags: Carry, Zero, Negative, Overflow, etc.. The 6502 uses a 16-bit address bus, allowing

Special high-speed memory area used like extra registers. Stack ($0100–$01FF): Fixed location for the system stack. 6502-emulator