Mode d’emploi
- Copiez la commande et examinez le paquet avant de l’installer dans votre environnement agent.
- Consultez le document original pour les outils, identifiants et environnements requis.
- Décrivez les entrées et le livrable souhaité ; comparez la sortie aux sources.
npx skills add https://github.com/ewrogers/megadev-skills --skill megadev-scalingAvant de commencer
- L’installation n’inclut ni abonnement au modèle, ni quota API, ni accès aux fichiers.
- Étoiles et installations reflètent l’activité, pas un test indépendant de qualité ou de sécurité.
Rendu depuis le dépôt source en conservant titres, exemples, code, tableaux, liens et images.
Megadev scaling
Decide whether the asset and effect benefit from an ASIC-generated image. The ASIC samples a stamp map into Word RAM; it does not give a VDP sprite a rotation flag, add palette lines or display the result by itself.
- Read ASIC layouts and projection before preparing stamps,
trace lines or register values. Read the selected Megadev headers rather than inventing convenience APIs or importing SGDK types.
- Read Ownership and publication for Main/Sub leases,
completion, cached snapshots, hidden VRAM uploads and cost accounting. Its performance section explains the measured 5→30 image/s improvements and how to profile copying, HUD work and handoff delays without weakening correctness.
- Read Validation for math, compiled adapters, ares and
checks that still need a physical console.
Essential contracts:
- The graphics operation requires 2M Word RAM and Sub ownership. Build immutable
source/map/trace inputs before writing the start register. No CPU modifies them or hands away Word RAM while the ASIC is active.
- Wait for hardware completion, then confirm the ownership handoff. A matching
mailbox reply alone does not authorize a Main read. Timeouts report failure; they do not cancel hardware or make a pending buffer safe to reuse.
- Validate alignments, region extents, image dimensions, signed step ranges and
the selected stamp/map layout. Keep output separate from source/map/trace.
- Treat the inverse projection and its fixed-point units explicitly. Floor
perspective uses a different start/step per output line; this is an image sampler, not a polygon engine, depth buffer or general camera system.
- Budget trace generation, ASIC work, Main copying, VRAM residency and VBlank
transfers separately. Publish an image only after every staged chunk completes. Extra RAM/VRAM can avoid visible tearing, but they are not free.
- Share the game's existing memory, Main/Sub, renderer and interrupt owners.
This skill does not introduce a competing CD, audio, allocator or input system.
The standalone Scaling Lab demonstrates zoom, rotation and a repeating perspective floor with original native-resolution art. Its scale_* helpers and fixed profile are project code, not Megadev APIs. The mosaic, colors, controls and layout are illustrative, not a game-design template.
Use ewrogers/megadev:latest; pull it before validation and inspect its SDK source. Limit Docker containers to two CPUs. Record actual compiler/SDK revisions and separate compiled model evidence from emulator and real-hardware observations.
