ugBASIC User Manual

   ON SCROLL {UP ROW|DOWN ROW|LEFT COLUMN|RIGHT COLUMN} GOSUB [label]

This command is used to force a unconditional jump with returning to a pre-defined position when the screen is scrolled down by an entire row or column.

  ON SCROLL UP ROW GOSUB scrolledAway

 ONSCROLL..GOSUB

• Atari (400/800)
• Atari XL/XE
• Commodore 128 (MOS 8502)
• Commodore 128 (Zilog Z80)
• Commodore 64
• TRS-80 Color Computer
• ColecoVision
• Amstrad CPC 664
• Dragon 32
• Dragon 64
• Thomson MO5
• Thomson MO5
• Olivetti Prodest PC128
• Commodore PLUS/4
• SEGA SC-3000
• SEGA SG-1000
• VG-5000
• Commodore VIC-20
• ZX Spectrum 48

If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!