Emu48 is a high-fidelity emulator for HP calculators, supporting models like HP38G, HP39G, HP40G, HP48SX, HP48GX, and HP49G. It runs on Windows, Mac, and mobile platforms, requiring ROM images for operation. The emulator features accurate replication of calculator functionality, including assembly language disassembler and debugger tools, making it essential for engineers, students, and calculator enthusiasts.