DGOS 1.4+

[ChickenMan]

The have also the DGOS 1.4 source code also if that helps, but compiles to a 2kb file.

0001 : ********** D G 0 S **********
0002 : WRITTEN BY DAVID GRIFFITHS
0003 : COPYRIGHT © 1980
0004 ;
0005 ; THIS SOFTWARE MAY NOT BE DUPLICATED WITHOUT
0006 ; THE PRIOR WRITTEN CONSENT OF THE COPYRIGHT
0007 ; HOLDER.
0008 ;
0009 ; DG OPERATING SYSTEM IS A MACHINE CODE
0010 : MONITOR INTENDED FOR USE WITH THE DG 680
0011 : CPU BOARD.
0012
0013 ; DISASSEMBLED BY DAVE WILLIAMS USING DISILOG.
0014 : EDIT WITH WORDMASTER. REASSEMBLED WITH
0015 : Z80 ASSEMBLER UNDER CP/M. JAN 1981.
0016 ;
0017 ;
0018 ; DGOS VER 1 4

We also have the ETI680 rom (a 2kb file) that contains the code "DGOS 1.4 c1980"