Atari 5200

Boots an Atari 5200 to a bundled homebrew cartridge (open AltirraOS 5200 BIOS). The default is Train 5200, an open-source action-puzzle game: drive a cargo train, load every item and reach the exit gate, steering with the on-screen d-pad or the arrow keys. The picker also has demos, including one that tiles the AltirraOS character set across the screen and live-mirrors the analog stick onto the palette. Sound is fully supported and plays when a cartridge programs POKEY; the page starts muted, so click Sound. Fire = Space; Start = Enter; the keypad and Start/Pause/Reset are on the Controller pad. Add ?debug, or click Debug, to step the 6502, set breakpoints/watchpoints and inspect memory. Click the screen first so it captures the keyboard.

Boots an Atari 5200 to a bundled homebrew cartridge (open AltirraOS 5200 BIOS). The default is Train 5200, an open-source action-puzzle game: drive a cargo train, load every item and reach the exit gate, steering with the on-screen d-pad or the arrow keys. The picker also has demos, including one that tiles the AltirraOS character set across the screen and live-mirrors the analog stick onto the palette. Sound is fully supported and plays when a cartridge programs POKEY; the page starts muted, so click Sound. Fire = Space; Start = Enter; the keypad and Start/Pause/Reset are on the Controller pad. Add ?debug, or click Debug, to step the 6502, set breakpoints/watchpoints and inspect memory. Click the screen first so it captures the keyboard.

Boots an Atari 5200 to a bundled homebrew cartridge (open AltirraOS 5200 BIOS). The default is Train 5200, an open-source action-puzzle game: drive a cargo train, load every item and reach the exit gate, steering with the on-screen d-pad or the arrow keys. The picker also has demos, including one that tiles the AltirraOS character set across the screen and live-mirrors the analog stick onto the palette. Sound is fully supported and plays when a cartridge programs POKEY; the page starts muted, so click Sound. Fire = Space; Start = Enter; the keypad and Start/Pause/Reset are on the Controller pad. Add ?debug, or click Debug, to step the 6502, set breakpoints/watchpoints and inspect memory. Click the screen first so it captures the keyboard.