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amiga-bootcamp/08_graphics
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Ilia Sharin c4522ef2ed Add memory types article, expand blitter cookbook, update cross-references 
New articles:
- 01_hardware/common/memory_types.md: comprehensive Chip/Fast/Slow RAM reference
  with DMA accessibility matrix, per-model configurations (A500-A4000),
  accelerator memory expansion (classic + modern), adaptive software behavior,
  pitfalls with impact analysis, FPGA/emulation notes
- AGENTS.md: documentation standards and methodology guidelines

Blitter programming (08_graphics/blitter_programming.md):
- Rewrote minterm truth table with narrative explanation and worked  example
- Added 7 advanced use cases with assembly/C code: shifted BOB, hardware scroll,
  area fill polygon, interleaved bitplane BOBs, double-buffered game loop,
  GUI window drag, tile map renderer
- Added Good/Bad Patterns section with 5 named antipatterns
- Added Practical Limitations table (10 constraints with workarounds)
- Expanded Common Minterms table with Description and Real-World Use Case columns

Cross-reference updates:
- Root README: added memory types to coverage, quick start, section index
- 01_hardware/README: updated common/ folder description
- address_space.md: linked to memory_types.md and chip_ram_expansion.md
- memory_management.md (exec): linked to hardware memory types reference
- bitmap.md, sprites.md, animation.md, audio.md: linked to memory_types.md
  explaining DMA Chip RAM requirement for each subsystem
- chip_ram_expansion.md: linked to comprehensive memory types article
2026-04-25 14:12:46 -04:00
..
animation.md Add memory types article, expand blitter cookbook, update cross-references 2026-04-25 14:12:46 -04:00
bitmap.md Add memory types article, expand blitter cookbook, update cross-references 2026-04-25 14:12:46 -04:00
blitter.md docs(amiga): complete AmigaOS 3.1/3.2 developer reference — 172 files across 17 sections 2026-04-23 12:17:35 -04:00
blitter_programming.md Add memory types article, expand blitter cookbook, update cross-references 2026-04-25 14:12:46 -04:00
copper.md docs(amiga): complete AmigaOS 3.1/3.2 developer reference — 172 files across 17 sections 2026-04-23 12:17:35 -04:00
copper_programming.md docs(amiga): make cross-references clickable markdown links 2026-04-23 12:24:21 -04:00
display_modes.md Expand documentation suite: 30+ articles enriched with diagrams, code examples, and hardware details 2026-04-23 21:37:26 -04:00
gfx_base.md Expand documentation suite: 30+ articles enriched with diagrams, code examples, and hardware details 2026-04-23 21:37:26 -04:00
ham_ehb_modes.md Expand documentation suite: 30+ articles enriched with diagrams, code examples, and hardware details 2026-04-23 21:37:26 -04:00
rastport.md Expand documentation suite: 30+ articles enriched with diagrams, code examples, and hardware details 2026-04-23 21:37:26 -04:00
README.md docs(amiga): expand animation guide with GEL architecture, hardware foundation, and historical context 2026-04-24 16:16:21 -04:00
sprites.md Add memory types article, expand blitter cookbook, update cross-references 2026-04-25 14:12:46 -04:00
text_fonts.md Expand documentation suite: 30+ articles enriched with diagrams, code examples, and hardware details 2026-04-23 21:37:26 -04:00
views.md docs(amiga): complete AmigaOS 3.1/3.2 developer reference — 172 files across 17 sections 2026-04-23 12:17:35 -04:00

README.md

← Home

Graphics Subsystem — Overview

The Amiga graphics system is built on custom DMA-driven hardware (Agnus/Alice + Denise/Lisa) managed through graphics.library. It supports planar bitmaps, hardware sprites, a Copper display coprocessor, and a Blitter for fast 2D operations. Three chipset generations (OCS → ECS → AGA) expanded resolution, colour depth, and bandwidth.

Section Index

File Description
gfx_base.md GfxBase structure, chipset detection (OCS/ECS/AGA), PAL/NTSC, display pipeline (MakeVPort/MrgCop/LoadView), blitter queue
bitmap.md BitMap structure, planar layout, allocation
display_modes.md Chipset comparison (OCS/ECS/AGA), ModeID system, PAL/NTSC timing, DMA slot budget
ham_ehb_modes.md HAM6/HAM8 encoding pipeline, EHB half-brite, fringing, palette programming, FPGA decoder logic
copper.md Copper coprocessor, instruction format, UCopList
copper_programming.md Copper deep dive: architecture, copper list construction, gradient and raster effects
blitter.md Blitter DMA engine, minterms, BltBitMap
blitter_programming.md Blitter deep dive: minterms, cookie-cut masking, line draw, fill mode
sprites.md Hardware sprites: DMA engine, data format, attached 15-colour sprites, multiplexing, AGA enhancements, priority control
rastport.md RastPort drawing context: draw modes, patterns, layer clipping, text pipeline, blitter minterms
views.md View, ViewPort, MakeVPort, display construction
text_fonts.md TextFont bitmap layout, baseline rendering, algorithmic styles, AvailFonts enumeration
animation.md GEL system deep dive: BOBs, VSprites, AnimObs, hardware foundation (Blitter/Copper/Sprite interaction), collision detection, double buffering, performance tuning