Intense
20211030
File links updated
Due to problems with Google Drive, files have been moved to Github and article links updated.
20200923
AMP16K: Multichannel sound on the ZX Spectrum 16K
A 4-channel beeper engine with support for contended memory. Technical information below.
Download archive (source code, converter, documentation)
20190129
Ninja Gaiden: Shadow Warriors (Jerri, DaRkHoRaCe, Diver4d, 2018)
- [Critical] Fixed crash when using the grappling hook shortly after the Fire Wheel attack
- Fixed crouching directions and attacking
- Fixed controls handling during the lift auto sequences on level 5
- Removed white screen transitions at sublevel changes
- Other minor fixes
20180923
Savage (Firebird Software, 1988)
Part One
- Most of the graphics engine rewritten for speed
- [Critical] Fixed calling init-time, inexistent code after a Game Over
- Fixed keyboard polling logic in menu and intermission screens
- Player character's direction and thrown weapons are reset after starting a new game
- Fixed the incorrect Part Two password displayed at game completion
Known bugs
- Respawning far from where the player died, attribute artefacts might be left onscreen.
- Falling offscreen while in possession of the orbiting bonus weapon leaves it nearby.
- Crouching on platforms in the sea of fire leaves the player character unable to move.
Part Two
- [Unnoticeable] Improved scroller code with correct synchronization
- Changed the '000' score font after loading to that used in the game
- Player shots are reset after starting a new game
Part Three
- Most of the graphics engine rewritten for speed
- [Critical] Fixed memory corruption problems in the object processing code
- Lifted the restriction on player's fire rate for balance
- Player character's direction and shooting FX are reset upon starting a new game
- Enabled the score routine to display the score
- The score display is moved to the top of the status panel, shown without flickering
Known bugs
- Bad collision detection due to the fixed oversized hitbox of the player character.
20181102
- Added tape versions
20180922
Teenage Mutant Hero Turtles (Image Works, 1990)
- Enabled diagonal movement outdoors, attacking while running
- Removed restrictions related to jump handling and air control
- Added vertical background parallax indoors
- Extra keys listed in the Redefine Keys menu
- Fixed the character selection cursor when using Kempston
- Map occlusion and teleport fixes
- Other minor fixes
Known bugs
- In overworld maps, it is possible to get stuck in a wall when moving forward diagonally.
20181102
- Added .TAP version
20170922
Aline: Colors in sync
Summary
Traditional challenges associated with using multicolor in ZX Spectrum programs include:
- Writing precisely timed display code.
- Adjusting the synchronization timings by hand to execute it at the right moment.
- Keeping the rest of your program from influencing the overall timing.
Aline, the technique presented in this article, aims to get rid of problems 2 and 3 altogether.
20170725
Presto: AY music loader
A ZX Spectrum, Sinclair BASIC compatible tape loader with the ability to play Vortex Tracker II AY music while loading. Supports 128K loading and Pletter-compressed data.
Watch demonstration
Watch demonstration
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