To run Windows 95 on your PSP using DOSBox, the most comprehensive guide is the classic Instructables "How to Run Windows 3.1/95 on a PSP" . You need the following specific files to get started:
: You'll need a Windows 95 ISO image. Be aware that downloading an ISO of Windows 95 might infringe on Microsoft's copyright. If you have a legitimate copy of Windows 95, you can create an ISO from your original CD. windows 95 on psp using dosbox download and set
win95.img to PSP/GAME/DOSBOX/.WIN95 folder from your CD into PSP/GAME/DOSBOX/ (so DOSBox can find setup files during the final phase).c:
cd windows
win /d
(The /d flag skips some drivers that crash the PSP)