Products
PetrOS® Operating System

PetrOS® is a compact operating system which supports a very limited subset of the Win32 API.

It was originally developed by Trumpet Software International pty ltd, but has recently been acquired by Tattam Software Enterprises Pty Ltd.

The currently released version is 1.01, and is available for sale here

 
ClassiOS - An Object Pascal Operating System

Tattam Software is redeveloping the PetrOS® IA32 (x86) OS project.  

This operating system is built entirely with the Delphi Compiler - even the boot loader!!  This was achieved by replacing the System.dcu and related units by a custom unit which can run in Ring 0 of the x86 CPU.

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DOS TCP/IP Driver

This is the commercial version of the free DOS TCP/IP stack (Peter Tattam's NTCPDRV) found at public FTP sites. It is a DOS TSR program which uses packet drivers to provide TCP/IP services.

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