Ain’t no emulator like an Atari emulator ‘cuz these emulator releases don’t stop. Count ‘em — PSP2600, PSP7800, and now ZX-81 releases PSPAtari — emulating the Atari 800/800XL/130XE/5200 models.

PSPAtari v1.1.2 changes:

• Speed improvements
• Auto-fire mode, press RTrigger+X to switch it on/off useful for games such as space Xevious! On given games, the auto fire can’t be stopped easily (so you might have to disable it several times)
• Bug fix: settings weren’t properly loaded when using original 5200 menu
• Add several new hotkeys:
  • settings such as fps, render mode, auto fire speed can now be directly modified inside the emulator (no need to enter in the settings menu)
  • quick save / quick load current state (no need to enter in the main menu)
• Default Hotkeys can now be set in the keyboard mapping menu (useful to add hotkeys on existing/previous keyboard files)
• Bug fix in the low battery watchdog
• Add vsync option

Download:
PSPAtari v1.1.2 fw 1.50
PSPAtari v1.1.2 cfw 3.xx
PSPAtari source code

- source: ZX-81’s web site