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Family Tree Software
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Genealogy made easy - complete with graphic family trees and easy-to-use interface.
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status of this document: work in progress

Table of Contents
Last updated: Dec 30. 1997 

to topBasic Description

The SYS format is basically a subset of the BMP format, where only certain combinations are allowed. There are a few weird aspects to this format. 

Important note
This is the format of the LOGO.SYS, LOGOW.SYS and LOGOS.SYS files of Windows 95. 
It does not apply to any other file! 
Other files may be binary code (KEYB.SYS) or ASCII (CONFIG.SYS) or actually anything else.


to topBasic File Format


Infoheader.Width = 320
Infoheader.Height = 400 (watch the AspectRatio!!!)
Infoheader.BitCount = 8
Infoheader.Compression=0 

Infoheader.ColorsImportant        thru 255 are cycled.


to topRaster Data encoding

Look at the  8bit - no compression section for BMPs.

to topPortability

Portability, what portability? This is a special case of BMP for Windows95. There's nothing more to say.

to topTrademarks, Patents and Royalties

To my knowledge: none.
(please read the disclaimer)

to topCross-Checking Software

This section is for programmers, who wish to cross-check their implementation with others. This is an incomplete list of programs, which are available as freeware / shareware / try-before-buy etc.

The following software is able to decode SYSs:

  • Use Windows 95. (unfortunately not freeware)
The following software is able to encode SYSs
  • ?

to topOnline Resources


to topPaper Resources 


to topDisclaimer
This is not the official format documentation. Although we're doing our best to keep this information as accurate as possible, there is no way of checking all of it under all possible circumstances. We're not taking any responsibility for the results of this information or lack thereof. The 'trademarks, patents and royalties' section is here just for your convenience, and is in no way complete. Please send us a note, if you find any incorrect of missing information to fileformats@daubnet.com. 
© Jörn Daub EDV-Beratung - Glashütter Weg 105 - 22889 Tangstedt - Germany