About
Sea Dragon is a classic Atari game created by Russ Wetmore. zedragon is a conversion of Sea Dragon for the Sinclair ZX81, requiring the machine to be expanded with 32K RAM, AY/YM sound, and UDG (user-defined graphics) support. The submarine-combat game is playable, controlled via dedicated keys or a joystick, with active ongoing work on map cleanup and sound effects.
Getting started
Requires a Sinclair ZX81 (or emulator) upgraded with at least 32K RAM plus UDG and AY/YM sound support, such as via Chroma or ZXpand hardware. Move the submarine with Q/A/N/M (up/down/left/right) and fire with Space; holding fire while moving slows the sub's movement for tight spots, and players must surface periodically to refill their air tanks.
Known limitations
- control: Controls can get stuck sometimes, unclear if this is a ZXpand issue or inherent to the input functions.
Additional notes
- Known bug
- Controls can occasionally get stuck; the author isn't sure if this is a ZXpand hardware issue or inherent to the input-handling routines.