USP - ZX Spectrum Emulator

USP - ZX Spectrum Emulator is an open-source emulator for Android devices. It is intended for users who want to work with compatible ZX Spectrum software through an Android application. MirrorNest lists it in the Developer Tools category, reflecting its role as software for running and handling emulated programs rather than as a general media application.

The emulator supports AY and YM sound systems, as well as the Spectrum Beeper. It includes Beta Disk functionality for software that relies on that system. Input support covers Kempston Joystick and Kempston Mouse controls. Compatible software can be used with snapshots and replays, allowing the application to handle those forms of saved or recorded emulator data.

Supported file types include SNA, Z80, SZX, RZX, TAP, TZX, and CSW. These extensions cover program images, tape-related files, snapshots, and replays used by the emulator. The application also accepts TRD, SCL, FDI, TD0, UDI, and ZIP files, which represent disk images and compressed packages among the supported formats.

MirrorNest distributes the official build by mirroring it directly onto its own storage. The mirrored file is scanned for malware before publication. This gives Android users a download source for the official open-source application while retaining its Android platform and Developer Tools classification.