Windows 95 can now mount a host folder as a network drive at \\HOST\HOST.
Read-only, ~1500 lines, zero deps. Defaults to ~/Downloads, configurable in
Settings.
Protocol: NEGOTIATE (LANMAN2.1), SESSION_SETUP, TREE_CONNECT, TRANSACTION/RAP
(NetShareEnum, NetServerGetInfo, NetWkstaGetInfo), TRANSACTION2/FIND_FIRST2,
SEARCH (8.3 with ~N suffix mapping), OPEN_ANDX, NT_CREATE_ANDX, READ_ANDX,
CLOSE, QUERY_INFORMATION, CHECK_DIRECTORY. NetBIOS Name Service on UDP 137
answers Node Status and Name Query so \\HOST resolves.
v86 hook: monkeypatches adapter.on_tcp_connection (old API), shadows
adapter.receive during a port-80 probe to steal a TCPConnection without
side effects, re-aims it at port 139. Data via .on_data (Closure
dead-code-eliminated .on/.emit). Also registers tcp-connection bus event
for newer v86 builds.
Security: read-only, path traversal blocked lexically and through symlinks
(realpath the deepest existing ancestor, re-append tail, confirm under root).
Share path validated in main-process IPC.
BIOS updated to SeaBIOS 1.16.2 (compatible with old v86). v86 itself stays
on the Feb 2025 prod build — newer builds hang at the splash screen on fresh
boot (bisect tooling included in tools/).
Also: tools/update-v86.js builds wasm+libv86+BIOS from a local v86 checkout
and refuses to install JS/wasm pairs more than 14 days apart (copy.sh ships
mismatched pairs). tools/parcel-build.js dynamic-import patch made tolerant
of post-d4c5fa86 builds.
The previous build patched libv86.js by exact-string match against
Closure-mangled identifiers (k.load_file, H.exportSymbol, pa, qa),
which broke on every upstream rebuild.
Of the three old patches:
- exportSymbol order: now a one-line HTML shim copying module.exports.V86
to window after libv86 loads
- this.fetch binding: fixed upstream
- load_file XHR vs fs: replaced by patching await import('node:fs/promises')
to require('fs').promises - string literals survive Closure, fails loud
if absent
Also adds tools/update-v86.js to pull new builds from copy.sh, and exposes
the renderer DevTools protocol on localhost:9222 in dev.
