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Add Copper ISA Complete Reference Manual

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New file: 08_graphics/copper/copper_reference.md
- Full instruction set reference with opcode encoding table
- Bit-level encoding for MOVE, WAIT, SKIP (7-bit masks)
- Beam position encoding: V counter (8-bit), H counter (7-bit)
- Copper control registers (COP1LC, COP2LC, COPJMP, COPCON, DMACON)
- Copper list structure, dual lists, SKIP-based double buffering
- DMA timing budget calculations per scanline
- Register reference for all copper-writable targets
- OCS/ECS/AGA differences (AGA 24-bit color via BPLCON3 LOCT)
- Programming models: bare metal, OS-friendly UCopList, self-modifying
- Common patterns: rainbow, split screen, status bar, sprite mux
- Debugging: 8 common pitfalls with symptoms and fixes
- Mermaid fetch-execute cycle diagram

Updated files:
- 08_graphics/README.md: add copper_reference.md to index
- 08_graphics/copper/copper.md: cross-reference link, fix MOVE/WAIT
  encoding, fix UCopList CMOVE syntax
- 08_graphics/copper/copper_programming.md: cross-reference link, fix
  horizontal resolution (2 color clocks, not 4)
This commit is contained in:
Ilia Sharin 2026-06-01 14:39:43 -04:00
parent a0fc3e05db
commit 2283178f09
4 changed files with 1031 additions and 10 deletions
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08_graphics/README.md
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@ -14,6 +14,7 @@ The Amiga graphics system is built on custom DMA-driven hardware (Agnus/Alice +
| [ham_ehb_modes.md](ham_ehb_modes.md) | HAM6/HAM8 encoding pipeline, EHB half-brite, fringing, palette programming, FPGA decoder logic |
| [copper.md](copper/copper.md) | Copper coprocessor, instruction format, UCopList |
| [copper_programming.md](copper/copper_programming.md) | Copper deep dive: architecture, copper list construction, gradient and raster effects |
| [copper_reference.md](copper/copper_reference.md) | Copper ISA complete reference: full encoding, control registers, timing, register map, debugging |
| [blitter.md](blitter/blitter.md) | Blitter DMA engine, minterms, BltBitMap |
| [blitter_programming.md](blitter/blitter_programming.md) | Blitter deep dive: minterms, cookie-cut masking, line draw, fill mode |
| [sprites.md](sprites.md) | Hardware sprites: DMA engine, data format, attached 15-color sprites, multiplexing, AGA enhancements, priority control |