Add full compiler toolchain, libc, examples and reference docs

First substantive commit: the entire Sprinter C compiler tree on top of
the bare README+gitignore initial commit.

What's in here:
  bin/sprinter-cc        — driver script invoking SDCC + linker + mkexe
  libc/                  — Sprinter-specific libc layer over ESTEX/BIOS
                           (conio, gfx, io, mem, stdio + headers)
  runtime/               — crt0 variants (default/small/banked/minimal)
                           + heap + bank trampolines
  toolchain/             — mkexe (SprintEXE packer, C + tests)
  examples/              — 30 demo programs (gfx, file I/O, env, time, …)
  lib/Makefile           — builds the libc archive (sprinter.lib)
  docs/                  — converted Sprinter manuals + asm reference samples
  third_party/           — solid-c reference compiler dump + sdcc setup script
  release_docs/          — packaging / release notes

gitignore overhaul:
  • Drop dangerous blanket patterns: *.asm (would hide docs/samples/*.asm)
    and *.exe (case-insensitive match was hiding third_party/solid-c/*.EXE
    on macOS APFS).  Replaced with examples/*/*.{asm,exe,…} and lib/*.lib.
  • Restore tracking of toolchain/mkexe/tests/{one,big}.bin — those are
    INPUT fixtures, not build outputs.
  • Collapse the duplicated SDCC/C/Sdcc sections into one section per
    concern (build outputs / vendored / OS-junk).
  • Add .sprinter-cc-*/, build/ (catches lib/build/ too), .claude/.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docs/reference/SPRINT2K/SPRN2K08.TXT

@@ -0,0 +1,104 @@
+*** Area: ZX.SPECTRUM                             Date: 22 Mar 01 17:42:00
+*** From: Alex Goryachev (2:5030/529.48)
+*** To  : All
+*** Subj: Sprinter News
+
+
+        �ਢ¥âáâ¢ãî, All!
+
+   Žâ¢¥ç ï ­  ¢®¯à®áë ®  ª®¬¯ìîâ¥à¥ Sprinter, ¯®ï¢¨¢è¨¥áï ¢ ª®­ä¥à¥­æ¨¨,
+­ ¤¥îáì ­  ¯®­¨¬ ­¨¥ ¨ ¤®¡à®¦¥« â¥«ì­®¥ ®â­®è¥­¨¥.
+   ‚ ­ áâ®ï騩 ¬®¬¥­â ¯à®¥ªâ  "Sprinter" (ªáâ â¨, ¯¨á âì ­ã¦­® ¨¬¥­­® ¯®
+ ­£«¨©áª¨, ¯®â®¬ã ª ª - Trade Mark :-)  ªâ¨¢­® à §¢¨¢ ¥âáï.
+“ç¨âë¢ ï ¢á¥¬ ¨§¢¥áâ­®¥ ¯®«®¦¥­¨¥ á ¯¥àá®­ «ì­ë¬¨ ª®¬¯ìîâ¥à ¬¨ ¨
+à á¯à®áâà ­¥­¨¥¬ ¯à®£à ¬¬­®£® ®¡¥á¯¥ç¥­¨ï ã ­ á ¢ áâà ­¥, ¬ë ­ ¤¥¥¬áï ᥩç á
+­  ¨­â¥à¥á ª Sprinter-ã á® áâ®à®­ë ¨­®áâ࠭楢.
+   H  ᥣ®¤­ïè­¥¬ íâ ¯¥ à ¡®âë ¬ë å®â¨¬ ¯à¥¤áâ ¢¨âì ¬¨àã ª®¬¯ìîâ¥à ᯮᮡ­ë©
+§ ¨­â¥à¥á®¢ âì ¢ ¯¥à¢ãî ®ç¥à¥¤ì ࠧࠡ®â稪®¢ ¯à®£à ¬¬­®£® ®¡¥á¯¥ç¥­¨ï 8-¬¨
+¨ 16-⨠¡¨â­ëå ª®¬¯ìîâ¥à®¢, ¯à¨áâ ¢®ª ¨ ¨£à®¢ëå  ¢â®¬ â®¢, ¨¬¥îé¨å
+ª ª®©-«¨¡® àë­®ª á¡ëâ  á¢®¨å ¯à®£à ¬¬ ¨ ᮯãâáâ¢ãîé¨å ⮢ à®¢.
+’ ª¨¥ ª®¬ ­¤ë ¥áâì ¯®áª®«ìªã §  £à ­¨æ¥© ¯« âïâ ¤¥­ì£¨ §  �Ž, ¥áâì ª«ã¡ë ¨
+¯®áâ®ï­­ë¥ ¯®«ì§®¢ â¥«¨. ˆ ¯®í⮬㠭 è¨ ¤¨áâਡìîâ®àë ­  ‡ ¯ ¤¥ ᬮ£ãâ
+¯à®¤ ¢ âì ᢮¥ ­®¢®¥  �Ž ¢¬¥á⥠ᮠSprinter-®¬. �® § ¯ ¤­ë¬ ¬¥àª ¬ Sprinter
+á⮨⠭¥ ¤®à®£® (ãç¨âë¢ ï ¢®§¬®¦­®á⨠¨ 㤮¡á⢮ ¨á¯®«ì§®¢ ­¨ï ¯¥à¨ä¥à¨¨),
+â ª çâ® §¤¥áì ¢®§¬®¦¥­ á¥à쥧­ë© ¡¨§­¥á.
+   �ਠãá«®¢¨¨ ᮧ¤ ­¨ï �Ž ¤«ï Sprinter-  ­  ‡ ¯ ¤¥, ­ è ª®¬¯ìîâ¥à ¬®¦¥â
+®ª § âìáï ¢®áâॡ®¢ ­­ë¬ ¨ ­  ¢­ãâ७­¥¬ àë­ª¥. H ¤¥¥¬áï ­  íâ®.
+   ‘¥©ç á ã ­ á § ¢ï§ «¨áì ®â­®è¥­¨ï á ¤¢ã¬ï ¯®â¥­æ¨ «ì­ë¬¨ ¤¨áâਡìîâ¥à ¬¨
+(¢ ˆá¯ ­¨¨ ¨ ¢ ‘˜€). ˆ¬¨ 㦥 ¯à¨®¡à¥â¥­ë â¥áâ®¢ë¥ íª§¥¬¯«ïàë, ¨¤¥â  ªâ¨¢­ ï
+¯¥à¥¯¨áª  ¨ ¯¥àᯥªâ¨¢ë ¢¯®«­¥ ®¡­ ¤¥¦¨¢ î騥. …áâì ¨ ç áâ­ë¥ «¨æ , § ª § ¢è¨¥
+Sprinter.
+   �®í⮬ã à ¡®âë ­ ¤ ¯à®¥ªâ®¬ ¢¥¤ãâáï ᥩç á ¢ âà¥å ¯«®áª®áâïå: ¤®à ¡®âª 
+¦¥«¥§ ; ®¯â¨¬¨§ æ¨ï ¡ §®¢®£® �Ž, ¯®§¢®«ïî饣® ¨á¯®«ì§®¢ âì ¦¥«¥§® ¨ ᮧ¤ ¢ âì
+­  ­¥¬ ¯à¨ª« ¤­®¥ �Ž; ¯à®¤¢¨¦¥­¨¥ Sprinter-  ­  ¢­¥è­¥¬ àë­ª¥ ¨  ªâ¨¢­ë© PR.
+   ‚ ¡ §®¢®¥ �Ž ¢ ­ è¥¬ ¯à¥¤áâ ¢«¥­¨¨ ¢å®¤¨â: DOS, ä ©«®¢ë© ¬¥­¥¤¦¥à,
+⥪áâ®¢ë© ¨ £à ä¨ç¥áª¨© । ªâ®àë,  áᥬ¡«¥à, ª®¬¯¨«ïâ®àë á ï§ëª®¢
+¯à®£à ¬¬¨à®¢ ­¨ï, ­ ¡®à ã⨫¨â (ª®­¢¥àâ¥àë, ¢ìàë).
+   —â® ª á ¥âáï ¦¥«¥§ , ⮠ᥩç á â¥áâ¨àã¥âáï ­®¢ ï ¯« â  Sp2000 ­  �‹Œ
+EP1K30QC208-3 (á ®¡ê¥¬®¬ ¢ âਠࠧ  ¡®«ìè¥), ª®â®à ï ¤®«¦­  áâ âì ®á­®¢®©
+«¨­¨¨ ¬®¤¥«¥© Sprinter. ’ãâ ­¥®¡å®¤¨¬® à §¤¥«¨âì ¯®­ïâ¨ï  "¯« â  ª®¬¯ìîâ¥à "
+¨ " ¬®¤¥«ì ª®¬¯ìîâ¥à  ".  �®¤ ¯« â®© ­ ¤® ¯®­¨¬ âì ᮡá⢥­­® ¯« âã, ª ª
+¦¥«¥§®,   ¯®¤ ¬®¤¥«ìî ª®¬¯ìîâ¥à  ­ ¤® ¯®¤à §ã¬¥¢ âì ­ ¡®à ª®­ä¨£ãà æ¨©,
+¢ë¯®«­¥­ëå ¢ €«ìâ¥à¥.  …᫨ £®¢®à¨âì ® ¯®â¥­æ¨ «¥ ¯« âë Sp2000, â® ¬®¦­®
+¯¥à¥ç¨á«¨âì â® ­®¢®¥, çâ® ®­  ¯®§¢®«ï¥â ॠ«¨§®¢ âì:
+
+1. 16-⨠ࠧà來ãî  àå¨â¥ªâãàã ᮯà殮­¨ï �‹Œ á ®á­®¢­®© ¯ ¬ïâìî ¨ IDE
+(¯®§¢®«¨â 㢥«¨ç¨âì ᪮à®áâì à ¡®âë á HDD ¨ ᪮à®áâì à ¡®âë  ªá¥«¥à â®à )
+
+2. � §¤¥«ì­ãî á奬ã à §¢®¤ª¨ ¡«®ª  ®á­®¢­®£® Ž‡“, IDE, FDD á ¡«®ª®¬
+¯à®æ¥áá®à , �‡“, Š�˜-Ž‡“, ISA.  �®§¢®«¨â:
+- ®à£ ­¨§®¢ âì ¯àאַ© ¤®áâ㯠ª ¯ ¬ï⨠¤«ï IDE, FDD ¨ ­¥ ⮫쪮;
+- ¥é¥ ¡®«¥¥ 㢥«¨ç¨âì ᪮à®áâì IDE;
+- ®à£ ­¨§®¢ âì ¡ëáâàãî ¯ à ««¥«ì­ãî à ¡®âã IDE ¨ ¯à®æ¥áá®à ;
+- ®à£ ­¨§®¢ âì ¢¨¤¥®à¥¦¨¬ë á à á¯®«®¦¥­¨¥¬ ¤ ­­ëå ¢ ®á­®¢­®¬ Ž‡“;
+
+3. 16-¡¨â­ë© ¤¢ã媠­ «ì­ë© §¢ãª®¢®© –€�.  € íâ® ¯®«­®æ¥­­ë© 16-¡¨â­ë© §¢ãª.
+
+4. ˆ ­¥ª®â®àë¥ ¤®¯®«­¨â¥«ì­ë¥ ¢®§¬®¦­®áâ¨:
+- ¯®¤ª«î祭¨¥ 72-pin SIMM ®â 4-å ¤® 64-å ¬¥£ ¡ ©â;
+- �‡“ ¤® 256Kb
+- ¯®«­ë© ¯®à⠯ਭâ¥à .
+
+   �ਭ樯¨ «ì­®¥ ®â«¨ç¨¥ ¯« âë Sp2000 ¢ ⮬, çâ® ®­  ¯®§¢®«ï¥â ¯à®¢®¤¨âì
+ ¯£à¥©¤ ¬®¤¥«¨ ª®¬¯ìîâ¥à  ¡¥§ § ¬¥­ë ¯« âë. �â® ®áãé¥á⢫ï¥âáï á ¯®¬®éìî
+¯à®£à ¬¬ë § ¯ã᪠¥¬®© ­  á ¬®¬ Sprinter-¥ ¨ ¯¥à¥§ ¯¨á뢠î饩 ¨­ä®à¬ æ¨î ¢
+稯 å ¯« âë. ‘⮨¬®áâì ¯®¤®¡­®£®  ¯£à¥©¤  ¡ã¤¥â ­¥¢¥«¨ª . �⮠ᤥ« ¥â 
+Sprinter ¤¥©á⢨⥫쭮 £¨¡ª¨¬ ã­¨¢¥àá «ì­ë¬ ª®¬¯ìîâ¥à®¬.
+   ‘¥£®¤­ïè­ïï ¬®¤¥«ì Sprinter ª 㦥 ¨§¢¥áâ­ë¬ ¯ à ¬¥âà ¬ ¤®¡ ¢¨«  ¯®«­ë©
+¯®àâ LPT ¨ 16 ¡¨â­ë© §¢ãª®¢®© –€�. ‘⮨¬®áâì ¯®¤®¡­®© ª®­ä¨£ãà æ¨¨ á®áâ ¢«ï¥â
+95 ¤®«« à®¢.
+‚ ­ áâ®ï騩 ¬®¬¥­â ¯« â  Sp2000 ¯à®å®¤¨â â¥áâ¨à®¢ ­¨¥ ¨ ¯®ª  ­¥ £®â®¢  ¤«ï
+¯à®¤ ¦¨ ª®­¥ç­ë¬
+¯®«ì§®¢ â¥«ï¬. ‚ ­¥© ¡ë«® ॠ«¨§®¢ ­® ¬­®£® ­®¢¨­®ª, çâ® ­¥ ¯®§¢®«ï¥â
+¢ë¯ãáâ¨âì ¥¥ ¢ ¯à®¤ ¦ã ¡¥§ âé â¥«ì­®© ¯à®¢¥àª¨ ¨ ¤®¢®¤ª¨.
+
+   ‘ ãç¥â®¬ í⮣®, ¬ë à¥è¨«¨ à áè¨à¨âì «¨­¥©ªã ¯« â Sprinter-  ¨ £®â®¢ë
+¯à¥¤«®¦¨âì ¯®«ì§®¢ â¥«ï¬ ¯« âã Sp2000-Light. Žâ«¨ç¨¥ ®â Sp2000 á®á⮨⠢
+®âáãâá⢨¨ ISA ᫮⮢, ¢â®à®£® IDE ࠧꥬ  ¨ ®£à ­¨ç¥­¨¨ ¢¨¤¥® Ž‡“ ¤® 256Kb.
+�â® ¯®§¢®«¨«® á­¨§¨âì á⮨¬®áâì "¦¥«¥§ " ¤® 85 ¤®«« à®¢. �ਠí⮬ ¯« â 
+á®åà ­¨«  ¢®§¬®¦­®áâì ¯à®£à ¬¬­®£®  ¯£à¥©¤  ¬®¤¥«¨ ª®¬ìîâ¥à .
+H ¤¥¥¬áï, çâ® ­®¢ ï ¯« â  ᬮ¦¥â § ¨­â¥à¥á®¢ âì ¯®«ì§®¢ â¥«¥©, ª®â®àë¬
+Sprinter
+¨­â¥à¥á¥­ ¢ ¯¥à¢ãî ®ç¥à¥¤ì ª ª "¯à®¤¢¨­ãâë©" Specrtum.
+…᫨ ¢ë å®â¨â¥ § ª § âì ¯« âã Sp-2000-Light ¨«¨ ã ¢ á ¥áâì ª ª¨¥ «¨¡® ¢®¯à®áë
+¯¨è¨â¥:
+
+FIDO: 2:5030/529.48
+e-mail: peters@atlant.ru
+
+ˆ§®¡à ¦¥­¨ï ­®¢ëå ¯« â ¤®áâã¯­ë ­  ­ è¥¬ ᠩ⥠http://www.petersplus.da.ru
+
+’ ª¦¥, ¥á«¨ ¢ë ¦¨¢¥â¥ ¢ ‘ ­ªâ-�¥â¥à¡ãࣥ, ¢ë ¬®¦¥â¥ ¯®§­ ª®¬¨âìáï á
+ª®¬¯ìîâ¥à®¬ Sprinter ¥á«¨ § ©¤¥â¥ ¢ ®ä¨á ä¨à¬ë "�…’…�‘ �«îá" ¯®  ¤à¥áã
+ã«.‚®ááâ ­¨ï 35, ®ä.31 (4 íâ ¦),
+(¯® à ¡®ç¨¬ ¤­ï¬, ⮫쪮 á 17 ¤® 19 ç á®¢)
+⥫. (812) 327-3531
+
+“¤ ç¨ ¢á¥¬!
+
+€«¥ªá¥© ƒ®àï祢  (¬¥­¥¤¦¥à ¯à®¥ªâ  "Sprinter")
+
+... Ÿ ¤ãå §« , ­ á¨«¨ï ¨ ᬥàâ¨. �â® ¬¥­ï ®â£®­ï«¨ ¡¥ááâà è­ë¥ ¬®­ å¨, 㤠àïï
+¢
+---
+ * Origin: PETERS PLUS LTD (2:5030/529.48)