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Multi User

Multi Screen

Multi Tasking




Retro UNIX 8086 v1 operating system has been developed by Erdogan Tan as a special purposed derivation of original UNIX v1 (by Ken Thompson, 1970-1972).


Source code has been ported from PDP-11 Unix assembler syntax to Microsoft Macro Assembler (INTEL x86 real mode) syntax and original unix source code has been modified for IBM PC/AT compatibility with standard ROM BIOS functions, without dropping/removing original UNIX v1 multitasking (time-sharing) features.


Retro UNIX 386 v1 is 32 bit (80386 protected mode) version of Retro UNIX 8086 v1. Retro UNIX 386 v1 operating system kernel and binaries have been written in assembly language syntax of Netwide Assembler (NASM).


Retro UNIX is a predecessor to SINGLIX operating system project.


NOTE: The 1st version TRDOS operating system (a little bit defective) runs in 8086 real (16 bit) mode and uses the 1st version of SINGLIX File System (byte based disk allocation table will be changed to bit based disk allocation table in next version).


Please watch this video: TRDOS demo and visit TRDOS section of singlix.com web site: trdos/index.html trdos/specs.html for details...



Last Update: 12/11/2017Tristar Red Sector Intro