PSPE4ALL vs ScePSP

PSPE4ALL is a Windows project focused on experimenting with, researching, and teaching emulation of modern devices and operating systems. Its pspe4all emulator targets the PlayStation Portable's Allegrex processor and emulates the PSP user-mode environment, using an x86-64 dynamic recompiler for Allegrex. The repository also lists an OpenGL 4 video hardware abstraction component. The current version does not include high-level emulation or the graphics engine while those components are being rewritten. Its user-mode emulation uses 32-bit addresses, which the project says may cause issues for other platforms or low-level PSP emulator design. It assumes a Windows 7-or-later host, a little-endian CPU, and 64-bit addresses; the quickstart also specifies Python 2.7 and Visual Studio 2013. The repository displays a GPL-2.0 license and lists no releases. The project invites contributors with advanced C++ knowledge and notes that substantial work remains open.

ScePSP has no write-up on Specifiction yet; its figures are above.