The official Nintendo 64 SDK that was sent to developers was split among a number of discs [1][2], among that the Nintendo 64 OS (N64 OS) which contained e.g. release notes, documentation, libultra, C headers, object files and microcode.
The N64 OS is not to be confused with the 'kernel' that runs on the N64 as mentioned in the online manuals.
The following table provides mostly documented information on all known versions of the N64 OS which were released for RCP 1.0 and/or RCP 2.0:
| RCP 1.0 | RCP 2.0 | Release Notes Date(s) | Online Download |
|---|---|---|---|
| 🟢 ? | 🔴 ? | 1995-09-07 | |
| 🟢 (patch) | 🟢 (main target) | 1995-09-29 | |
| 🔴 | 🟢 Ultra 3.5 | 1995-10-26 | |
| 🟢 1.0F | 🟢 2.0B | 1995-11-20 | |
| 🟢 1.0G | 🟢 2.0C | 1996-01-24 | n64_lib_files_and_debugger _1.0h.zip (SGI) [1] |
| 🟡 1.0G | 🟡 2.0D | (unpublished) | |
| 🟢 1.0I | 🟢 2.0E | 1996-04-17 | Gigaleak 2 (SGI) [3] |
| 🔴 | 🟢 2.0F | 1996-08-15 | Gigaleak 2 (SGI) [3] |
| 🔴 | 🟢 2.0G | 1996-09-30 | Gigaleak 2 (SGI) [3], Oman Archives [4] |
| 🔴 | 🟢 2.0H | 1997-02-24 | OS/PC – v2.0H [1] (PC) |
| 🔴 | 🟢 2.0I | 1997-12-15 | Developer OS/Library – WIN95 v2.0I (PC) [1] |
| 🔴 | 🟢 2.0I patches | 1998-03-05 to 10-21 | |
| 🔴 | 🟢 2.0I patch NOA9801 | 1998-04-23 | Developer Patch NOA9801 (PC/SGI?) [1] |
| 🔴 | 🟢 2.0J | 1999-02-01 | OS/PC-SGI – v2.0J (PC/SGI) [1] |
| 🔴 | 🟢 2.0J Patch 1 | 1999-03-19 | |
| 🔴 | 🟢 2.0K | 1999-08-04 | OS/PC – v2.0K (PC) [1] |
| 🔴 | 🟢 2.0L | 2000-07-03 | OS/PC – v2.0L (PC) [1] |
Note that the table lists the dates of the release notes which might differ from the actual release dates.
- ultra64.ca
n64sdk.7z= OS 2.0J - ultra64.ca
NINTENDO 64 SDK 5.0 (Installer) (CD-RIP).7z= OS 2.0K - both combined: https://archive.org/details/Nintendo64SDK