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+# Turbo Modula-2 compiler re-read — project summary
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+
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+Upstream inputs (local only, git-ignored): `Reversing-Turbo-Modula2-main/`
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+(disasm + partial decompile) and `Turbo-Modula-2-Reloaded-main/` (buildable
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+system). Everything below is versioned: `docs/compiler/` (analysis),
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+`src/compiler/` (renamed sources).
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+
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+## Problem
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+
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+The compiler decompiled but was unreadable: every
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+function/procedure/variable a bare number (`procN`/`globalN`/`paramN`/`localN`).
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+
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+## Done (tags)
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+
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+* `compiler-outline-v1` — `docs/compiler/00..70 + TAGGED-SUMMARY.md`:
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+ folder analysis, per-module architecture, full rename plan.
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+* `compiler-renamed-v1` — `src/compiler/COMPILER|SCANNER|ERRORS|CODEGEN.{DEF,MOD}`,
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+ `SYMTAB.DEF`, `README.md`, `RENAME-MAP.md`: module-level identifiers renamed
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+ (e.g. `InsertIdent/DeclConst/GetSym/NextChar/ReportError/FlushCodeWindow`),
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+ cross-module qualified uses updated, `0x1A`/`0x00` padding stripped.
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+* `compiler-params-v1` — all `paramN`/`localN` in the 4 `.MOD` bodies renamed
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+ in-scope (`kind/typeDesc/mark/sym/slot/bit/shown/desc/...`); fixed a real
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+ shadowing bug (`FindFileOnDrives`: local `currentDrive` shadowing the global,
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+ now `startDrive`); fixed missed `keywordHashFunc` and `modExtra` field.
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+ Verified: no numbered identifiers remain in `src/compiler/`.
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+* `compiler-frontend-map-v1` — `src/compiler/FRONTEND.md`: every exported head
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+ of `PASS1` (35), `STATEMEN` (19), `EXPRESS` (25+13 Z80 stubs) and `SYMTAB`
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+ bodies pinned (MCode offset + old name + proposed name + evidence), e.g.
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+ `~ParseType` (02e6), `ParseStatement` (0566), `ParseExpression` (1221),
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+ `Pass1Main` (1027). No fake signatures — map only.
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+
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+## Deliberately pending
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+
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+* `Pass1/Statemen/Express` bodies (disassembly only, no upstream `.MOD`).
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+* `SYMTAB.MOD` bodies (same).
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+* `GENZ80` native backend.
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+* Recompile + `unassemble.c` diff verification of the renamed sources.
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+
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+## Next
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+
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+Decompile in dependency order: `SYMTAB` (`EnterIdent/LookupChain/ImportAll`)
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+→ `EXPRESS` helpers → `STMT/STATSE` → `CASE/FOR` → Pass1 types → decls →
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+module heads → SYM writer (`docs/compiler/70-rename-plan.md`, phase 4).
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