Saturn Documentation
Unlike the Mega Drive, all Saturn manuals were provided as digital files as the primary means of distribution, and had a well-defined document ID scheme. These documents were often combined together into larger volumes, forming de-facto manuals such as the “Saturn Programming Manual Vol.1”, which were usually printed as physical hard-copies for use during development. Manuals are listed here in a separated form based on unique document IDs, rather than grouped into the larger traditional manuals, to make it easier to locate specific content. Almost all the manuals here come from original PDF versions provided through the Sega DTS CDs or website, however a few manuals have been scanned where digital versions have not been located. In the case of original PDF manuals, most of them had PDF document restrictions enabled preventing important functions like copy and paste and page extraction from working. This password is backed via a 40-bit RC4 hash, which has so far been unable to be bruteforced to retrieve the original password, however all the documents here have had the document restrictions removed using recovery tools, for which knowing the original password is not necessary in this case.
Most of the earlier manuals here used a document ID of the form “ST-NN-DDDDDD”, where “NN” is a two-digit document ID, and “DDDDDD” is a six digit date in “MMDDYY”, with some additional optional qualifiers possibly appearing before the date. As the Saturn document library expanded to include over 100 items, document IDs started using a three-digit number instead, however some documents prior to document 100 used a three digit number with a leading zero, and later revisions of some documents with an ID below 100 that previously didn’t have a leading zero had one added. This was done inconsistently. To standardize document IDs here and make them easier to work with, all document IDs have been expanded to use a three digit number here.
Overall System Documentation
Date/Code |
Document |
Author |
Description |
1997-08-25 |
SegaSaturn Developer’s Documentation Version 2.50 (English/Japanese)
Hosted Mirror (English/Japanese) |
Sega |
This archive contains the documentation content of the “Developer Tool Kit” CD from August 1997, made available to Japanese developers. This is believed to be the last and most complete developer documentation for the Saturn. All the documentation in this archive takes the form of local html files, which were originally in Japanese only. This version contains a copy of the original Japanese documentation, combined with a community-developed English translation for both text and images, where you can easily switch between the two languages.
The manual is comprehensive, and covers issues ranging from the low-level hardware, up to system libraries and game standards. This was the primary documentation made available to Japanese developers. Separated documents with individual ID numbers, such as was used for English-speaking regions, don’t appear to have been used in Japan for the Saturn, instead there were several versions of larger manuals provided.
Alternate VersionsSegaSaturn Developer’s Documentation Version 2.50 [Original Japanese] Original Japanese-only version of the documentation, without the English translation. The hybrid English/Japanese version is recommended.
SegaSaturn Developer’s Documentation Volume 1 Release 1 (Japanese) (1996-04-20) [Original Japanese] [English Translation 2019-09-02] Hosted Mirror (Japanese) Hosted Mirror (English) This version contains the significant content of the “Developer’s Documentation Volume 1” CD, made available to Japanese developers working with the Sega Saturn. This is the first electronic version of this documentation that was made available to developers. It is recommended to use the newer 2.50 release of the manual in the general case, as it provides much more information and is generally better laid out and more accessible. |
1994-04-13 |
Introduction to Saturn Game Development |
Sega |
|
|
Saturn Training Tutorial by Sega of Europe |
Sega |
Presentation slides from a Sega Saturn training course run by Sega of Europe. These slides were circulated on the DTS CDs for the Sega Saturn. |
1994-05-19 |
Developer Technical Support Saturn Training - Ver 1.1 |
Sega |
Presentation slides from a Sega Saturn training course run by Sega of America, while the Sega Saturn was still under development, along with a small addendum on the 32X. The slides for the conference were made available on what was probably one of the first Sega DTS CDs, with the same date as the conference of 1994-05-19. They have been converted here from Lotus Freelance Graphics format into a PDF for easy viewing. |
ST-030-R1 |
Saturn Outline (Missing) |
Sega |
|
ST-155-062094 |
Saturn Introduction Manual |
Sega |
|
ST-103-R1-040194 |
Saturn Overview Manual (temporary version 1) |
Sega |
|
ST-013-R3-061694 |
VDP1 User’s Manual |
Sega |
Alternate VersionsVDP1 User’s Manual - [ST-013-R2-120693] (Missing) |
ST-013-SP1-052794 |
VDP1 User’s Manual Supplement |
Sega |
|
ST-089 |
VDP1 Constraint Items (Missing) |
Sega |
|
ST-058-R2-060194 |
VDP2 User’s Manual - Ver 1.1 |
Sega |
|
ST-077-R2-052594 |
SCSP User’s Manual |
Sega |
Alternate VersionsSCSP User’s Manual - [ST-077-R1] (Missing) |
ST-097-R5-072694 |
SCU User’s Manual - Third version |
Sega |
Alternate VersionsSCU User’s Manual - [ST-097-R3-052594] (Missing) |
ST-169-R1-072694 |
SMPC User’s Manual |
Sega |
|
ST-210-110194 |
SCU Final Specifications - Precautions (Version 1) |
Sega |
|
ST-040-R4-051795 |
Disc Format Standards Specification Sheet - Ver 1.0 |
Sega |
Alternate VersionsSaturn CD System - [ST-040-R1] (Missing) Disc Format Standards Specification Sheet - [ST-040-R2-062294] (Missing) Disk Format Standards Manual - [ST-040-R3-011895] (Missing) |
ST-202-R1-120994 |
Sega Saturn Dual CPU User’s Guide |
Sega |
|
|
Developing PAL Compatible Software on the Sega Saturn |
Sega |
|
|
Saturn Technical Bulletins |
Sega |
Saturn Technical Bulletin #1 - Saturn CD Drive Duty Ratio Restrictions Saturn Technical Bulletin #2 - Preemphasis Prohibited Saturn Technical Bulletin #3 - Information Regarding CD Burning Saturn Technical Bulletin #4 - Saturn Software Development Standards Saturn Technical Bulletin #5 - Error Checking for Data Errors Saturn Technical Bulletin #6 - Saturn System Functions Saturn Technical Bulletin #7 - Saturn Disc Format Specification Change Saturn Technical Bulletin #8 - CD Communication Interface Update Saturn Technical Bulletin #9 - Size Value for Saturn Memory Manager Saturn Technical Bulletin #10 - SCU Specification Changes Saturn Technical Bulletin #11 - Disc Format Standards Specification Revision Saturn Technical Bulletin #12 - SCU DMA, Boot ROM, and VBlank Precautions Saturn Technical Bulletin #13 - VRAM Bank Splitting Saturn Technical Bulletin #14 - Use of VRAM for Bit Maps Saturn Technical Bulletin #15 - VDP1 User’s Manual Correction Saturn Technical Bulletin #16 - SCU DSP Instruction Clarification Saturn Technical Bulletin #17 - Mission Stick Specifications Saturn Technical Bulletin #18 - Limitation of Default Interrupt Processing Routine Saturn Technical Bulletin #19 - GFS_Init Settings Saturn Technical Bulletin #20 - Program Library User’s Guide 1 Corrections Saturn Technical Bulletin #21 - GFS_Init and GFS_LoadDir Function Errors Saturn Technical Bulletin #22 - VDP1 and VDP2 Resolution Specification Changes Saturn Technical Bulletin #23 - VDP Interlace Settings Saturn Technical Bulletin #24 - Changing VDP2 Screen Resolution Saturn Technical Bulletin #25 - Palette Format Sprite Display Saturn Technical Bulletin #26 - Obtaining CD Directory Information Saturn Technical Bulletin #27 - Limitations in Monoral or Language Setting Saturn Technical Bulletin #28 - Using Dual CPU’s on the Sega Saturn Saturn Technical Bulletin #29 - Setting CD-DA Volume in Applications Saturn Technical Bulletin #30 - Temporary Files Created When Building Disc Image Saturn Technical Bulletin #31 - Changes in Area Symbols Saturn Technical Bulletin #32 - Differences in Sega Saturn Hardware and Peripheral Color & Form Factor Saturn Technical Bulletin #33 - Additional VDP2 Restrictions Saturn Technical Bulletin #34 - Sega Saturn Mission Stick Application Manual Saturn Technical Bulletin #35 - Change in the 1st Read File Load Area Size Saturn Technical Bulletin #36 - Saturn Hardware Chip Initialization Saturn Technical Bulletin #37 - VDP2 Specification Changes Saturn Technical Bulletin #38 - Arcade Racer Application Manual Saturn Technical Bulletin #39 - Supplemental Information on the SCU-DMA Transfer Byte Count Saturn Technical Bulletin #40 - Additional Sega Saturn Compatible Peripheral ID Character Codes Saturn Technical Bulletin #41 - Saturn Stunner & Virtua Gun User’s Manual Version 1.00 Saturn Technical Bulletin #42 (Preliminary) - Cautions on using SMPC Saturn Technical Bulletin #43 (Preliminary) - Multi Controller User’s Manual Version 1.00 Saturn Technical Bulletin #44 (Preliminary) - Shuttle Mouse Data Format Version 1.00 Saturn Technical Bulletin #45 (Preliminary) - Saturn Keyboard Data Format Version 1.00 Saturn Technical Bulletin #46 (Preliminary) - Saturn Date Cartridge Manual Version 1.00 Saturn Technical Bulletin #47 (Preliminary) - Extended RAM cartridge Manual Version 1.02 Saturn Technical Bulletin #48 (Preliminary) - SEGASaturn Development Tool Segments Saturn Technical Bulletin #51 (Preliminary) - Restrictions for the MC68EC000 Sound CPU and SCSP Saturn Technical Bulletin #SOA-1 - GFS Library Usage Saturn Technical Bulletin #SOA-2 - Casting VDP1 Shadows on VDP2 Backgrounds Saturn Technical Bulletin #SOA-3 - SEGA Saturn CD Door-Open Standard Saturn Technical Bulletin #SOA-4 - Saturn System Disks Saturn Technical Bulletin #SOA-5 - VCD Interface Board Installation Saturn Technical Bulletin #SOA-6 - VDP2 Cycle Pattern Registers Saturn Technical Bulletin #SOA-7 - Sprite Transparency Saturn Technical Bulletin #SOA-8 - Saturn SCU DSP Tutorial Saturn Technical Bulletin #SOA-9 - Saturn SCU DSP Programmer’s Reference Saturn Technical Bulletin #SOA-10 - Saturn SCU DSP Demonstration Program Saturn Technical Bulletin #SOA-11 - VDP2 Rotating Backgrounds Saturn Technical Bulletin #SOA-12 - Security Codes in the IP.BIN File |
Sega Basic Library (SBL) Documentation
Date/Code |
Document |
Author |
Description |
ST-162-062094 |
System Library User’s Guide |
Sega |
Note that despite the naming, the “ST-162-R1-092994” document is really a separate document from this one. After the table of contents in this version, a note is given stating that the leading sections of the manual have been archived, and can be located in “ST-162-R1-092994”. For this reason, the two documents are listed separately here despite sharing the same document ID. Things get more confusing though. This manual with ID “ST-162-062094” only still contains the “CD Communication Interface User’s Manual - Version 0.9” at this point, as mentioned directly in an update to this document in Tech Bulletin #8. It appears the document was given a new separate document number later though, with the (currently missing) “ST-162-B-R1-042795” manual apparently covering the same content. |
ST-162-R1-092994 |
Saturn System Library User’s Guide - Ver 1.0 |
Sega |
|
ST-162-B-R1-042795 |
CD Communication Interface User’s Manual (Missing) |
Sega |
Note that this manual appears to be an updated version of the same content covered in “ST-162-062094”. This manual is described as follows: “This preliminary document covers CD block functions and the external specifications for the CD communications interface. The CD communications interface facilitates use of the CD block functions via a common software interface.” |
ST-136-R2-093094 |
Program Library User’s Guide 1 - CD Library |
Sega |
Alternate VersionsProgram Library User’s Guide 1 - [ST-136-R1] (Missing) |
ST-157-R1-092994 |
Program Library User’s Guide 2 - Graphics Library |
Sega |
|
ST-135-R4-092295 |
Program Library User’s Guide 3 |
Sega |
Alternate VersionsProgram Library User’s Guide 3 - [ST-135-R1-062094] Program Library User’s Guide 3 - [ST-135-R3-012395] (Missing) |
ST-136-D-R2-082495 |
Branching Playback Library User’s Manual |
Sega |
|
ST-199-092994 |
Backup Library User’s Manual (Missing) |
Sega |
|
ST-267-011296 |
Sega Basic Library 6.0 - ReadMe File Series (Missing) |
Sega |
|
Saturn Graphic Library (SGL) Documentation
Saturn Cinepak Documentation
Date/Code |
Document |
Author |
Description |
ST-213-110994 |
Cinepak for Saturn User’s Manual (Missing) |
Sega |
|
ST-272-032296 |
Cinepak ReadMe Document Series (Missing) |
Sega |
|
ST-183-A-R1-090194 |
Evaluation Edition MovieToSaturn_J (Missing) |
Sega |
|
ST-183-B-R1-090194 |
Specifications for Cinepak Library Functions (Missing) |
Sega |
|
|
Standard Cinepak Compression Technique Ver.1.00 (Missing) |
Sega |
|
Saturn Netlink Documentation
Date/Code |
Document |
Author |
Description |
ST-275-A-040496 |
Sega Saturn NetLink Adapter Specification (Missing) |
Sega |
|
ST-275-B-040496 |
Sega Saturn NetLink Adapter SMPC Reference (Missing) |
Sega |
|
ST-275-C-040406 |
Sega Saturn NetLink Adapter Restrictions (Missing) |
Sega |
|
ST-275-D-040496 |
Sega Saturn NetLink Adapter Communications Reference (Missing) |
Sega |
|
ST-275-E-040496 |
E39 MCU Parallel Host Interface Register (Missing) |
Sega |
|
ST-276-040596 |
AT Commands for RC288ACx and RC144ACx Modem Famalies (Missing) |
Sega |
|
ST-276-SP1-051396 |
Sega Saturn Modem AT Command List (Missing) |
Sega |
|
|
XBAND Saturn Head-To-Head Game Library |
Sega |
|
|
XBAND Saturn Multiplayer Game Library |
Sega |
|
Other Library Documentation
Procedures, Standards, and Miscellaneous Documentation
DTS Newsletters
These newsletters were distributed by the Developer Technical Support (DTS) department of Sega of America, from what appears to be at least 1993 up to 1997. They contained information on a wide variety of topics, from listing support contacts and available tools and documentation, to tips and solutions to common problems, advertising upcoming events, recapping recent events, and so on. These particular files were all recovered from the Sega DTS website where they had been made available. The volume numbers indicate that prior releases of this newsletter existed which were not made available in those archives, possibly because the files had been lost or were not available in a digital form. The newsletter was titled “Sega DTS Developer News” until Volume 3, Number 5 or 6, when it was rebranded as “Developmental”, with “Sega Developer Technical Support Newsletter” as a subtitle. Note that the DTS materials primarily migrated online in 1997. Reconstructed partial archives of the DTS website, as well as the contents of DTS CDs, are provided in the software section.
Date/Code |
Document |
Author |
Description |
Vol 2, No 2 [1994-10] |
DTS Newsletter - Vol 2, No 2 |
Sega |
Web description - “The Hardware Issue”. Focuses on 32x and Saturn development issues, with listings of 32x and Saturn tools and documentation. This issue was released about a month before the 32x and Saturn were released to consumers. Notably advertises that video tapes of the Saturn Developer’s Conference from May 1994 were made available to developers. The slides from this conference are provided in the system documentation section above. |
Vol 3, No 1 [1995-01] |
DTS Newsletter - Vol 3, No 1 |
Sega |
Web description - “Software Exchange”. Quickly recapps a “32XPOSED” 32X Developer’s Conference that was held on November 10 1994, and advertises an upcoming Sega DevCon ‘95 conference, scheduled for March 14-17, which was apparently the first international multi-platform developer conference Sega held, and was intended to be an annual event going forward. This edition only lists Saturn tools and documentation at the end of the newsletter. |
Vol 3, No 2 [1995-06] |
DTS Newsletter - Vol 3, No 2 |
Sega |
Web description - “Devcon ‘95 Wrap-Up”. Recap of DevCon 95, and an assortment of information covering the Mega Drive (Genesis), 32x, and Saturn. |
Vol 3, No 4 [1995-09] |
DTS Newsletter - Vol 3, No 4 |
Sega |
Web description - “Focus on the Creative Support Group”. A short issue with info split between the 32x and Saturn. Gives some info on the structure of the Sega DTS BBS. |
Vol 3, No 5 |
DTS Newsletter - Vol 3, No 5 (Missing) |
Sega |
This issue would have existed, but was missing from the DTS website archives for unknown reasons. The content of this newsletter is unknown. |
Vol 3, No 6 [1996-04] |
DTS Newsletter - Vol 3, No 6 |
Sega |
Web description - “DevCon ‘96 Wrap-Up: now the fun begins”. This issue uses the new “Developmental” branding, and now describes itself as a “monthly” newsletter. Contains a recap of DevCon 96, which was focused on the Saturn. Also announced is a migration away from the BBS for sharing developer tools and information, in favour of a website and FTP instead. The Q&A section on page 3 indicates Sega had also transitioned away from providing physical paper documentation at this point in favour of digital files, although paper versions could still be provided on request for a fee. Absent from this newsletter is any reference to the 32x, with Sega having announced it was discontinuing the system around this time. The March 96 DTS CD is mentioned, which was distributed during DevCon 96. |
Vol 3, No 7 [1996-05] |
DTS Newsletter - Vol 3, No 7 |
Sega |
Web description - “Promised and Delivered: DTS WWW”. Update on Saturn tools and documentation, with advertising on a presense at the upcoming E3 convention. The May 96 DTS CD, and upcoming June 96 DTS CD are both mentioned here. |
Vol 3, No 8 [1996-07] |
DTS Newsletter - Vol 3, No 8 |
Sega |
Web description - “The DTS WWW Companion”. Contains a large listing of Saturn tools and software. Also advertises the upcoming November 96 DTS CD. Notably, now describes itself as a “bi-monthly” newsletter. |
Vol 3, No 9 [1996-11] |
DTS Newsletter - Vol 3, No 9 |
Sega |
Web description - “1996’s Best Known A-BUGS”. Advertises the DTS website, describing it as “less than four months old”, and mentioning that all (Saturn) tech bulletins are now available on the site (the list of which is given in the newsletter). Also mentions that faxes are a thing of the past and increasingly updates will be sent via email only. |
Vol 4, No 1 [1997-02] |
DTS Newsletter - Vol 4, No 1 |
Sega |
Web description - “Sega Tops Holiday, Yearly Sales Predictions, CodeScape: The powerful new debugging tool from Cross Products, Best Known A-BUGS - Part 2, Spotlight: EDTS Exposed”. Based on the archive.org content of http://www.dts.sega.com, it appears this was the last issue of the DTS newsletter, with the website itself and email lists likely replacing it going forward. |
Service Manuals
Date/Code |
Document |
Author |
Description |
013-01 (1995-06) |
Sega Service Manual - Sega Saturn (PAL) |
Sega |
Alternate VersionsSega Service Manual - Sega Saturn (PAL) - [013-01] (1995-06) - Part 1 of 2 (A4) [PDF][TIFF] Sega Service Manual - Sega Saturn (PAL) - [013-01] (1995-06) - Part 2 of 2 (A3) [PDF][TIFF] |
|
Sega Service Manual - Sega Saturn VA-13 (PAL) (Partial) |
|
The origins of this document are unclear. It contains are a block diagram and 12 pages of schematics covering the VA-13 model of the Sega Saturn, which are official and would have been created by Sega, however the reference information has been modified, referring instead to www.brasilmodchip.com.br. Two additional pages of smaller schematics are included at the end which may be unofficial, or taken from another document. It is suspected these files were taken from a service manual, most likely from Brazil, but that’s not certain at this point. |