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amiga-bootcamp/07_dos/README.md
Ilia Sharin b915524667 docs: Document CDFS architecture and handler ecosystem 
- Add comprehensive cdfs.md covering ISO 9660, UDF, handlers, and hardware.
- Update relevant section indexes (07_dos, 10_devices, 02_boot_sequence) and root README.
- Expand scsi.md to link to the new CDFS coverage.
2026-06-02 22:38:38 -04:00

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dos.library — AmigaDOS Overview

Section Index

File Description
dos_base.md DosLibrary structure, RootNode, BCPL heritage
file_io.md Open/Close/Read/Write/Seek, buffered I/O (FRead/SetVBuf), FileInfoBlock, practical patterns
locks_examine.md Lock semantics (shared/exclusive), handler discovery, Examine/ExNext/ExAll, antipatterns
pattern_matching.md ParsePattern, MatchPattern, AmigaDOS wildcard syntax
process_management.md CreateNewProc, SystemTagList, Execute
packet_system.md DosPacket wire format, ACTION_* codes, handler protocol, BSTR encoding
filesystem.md FFS/OFS block layout, root/file/data blocks, bitmap, hash function; capabilities matrix (max sizes, directory limits, nesting, floppy/HDD); third-party deep-dive (PFS3, SFS, FFS2 — atomic commits vs journaling vs validation); fragmentation & defragmentation (bitmap scatter, defrag tool catalog — ReOrg/DiskSafe/Quarterback/SFSdefrag, CF/SSD rationale, best practices); partition IDs & on-disk layout (two-layer RDB/signature system, complete DosType hex tables, ASCII diagrams for OFS/FFS/PFS3/SFS metadata placement); RDB partitioning (RigidDiskBlock, PartitionBlock linked list, FS headers, partition limits); Kickstart boot process (Strap, BootPri selection, Early Startup Menu, Mermaid flowchart); multi-boot configurations (dual-OS, recovery, games); partition layout strategy table; ADF reader (Python on modern machine)
cdfs.md CD-ROM filesystems: ISO 9660 (PVD layout, levels 1–3), Rock Ridge (SUSP/RRIP tags), Joliet (UCS-2), UDF (ECMA-167), HFS; handler architecture (three-layer stack, DOSDrivers mounting, DosType IDs, disc change detection); 7 handler implementations compared (CDFileSystem, CacheCDFS, AmiCDFS, AsimCDFS, BabelCDFS, AllegroCDFS, ODFileSystem — master comparison table, decision flowchart); CD-DA audio routing; hardware platforms (CDTV SCSI, CD32 Akiko, desktop IDE/SCSI); burning tips; 4 named pitfalls; Rainbow Book standards table; formal ECMA/ISO/IEEE references
environment.md GetVar/SetVar, local/global/persistent env variables
error_handling.md IoErr, Fault, PrintFault, complete error code table
cli_shell.md CLI/Shell deep dive: architecture (process creation), BCPL→C history, pipes & I/O redirection, script cookbook (7 real-world patterns), ReadArgs API with template qualifiers, resident commands, shell environment (startup files, variables, prompt customization), 24 built-in commands, 4 named antipatterns, historical context (TRIPOS), modern analogies