If someone turned up with the source of EXDOS
And the BASIC, EXOS, etc...
![:-)](/Smileys/phpbb/ds_icon_smile.gif)
I started with the EXDOS because I wanted to work my IDE controller.
Unfortunately EXDOS Technical Documents are
missing! ![ds_icon_cry :cry:](/Smileys/phpbb/ds_icon_cry.gif)
My IDE hw and the low level routines are ready at about 1996. But at this time I thought totally new DOS needed...
Many years later when I started the disassembly then found: expanding the EXDOS with new disk handlers is a very-very-very simple thing! Few days later the IDE interface worked with EXDOS
![:-D :-D](/Smileys/phpbb/ds_icon_biggrin.gif)
it would save you a lot of work!
This is not the only reason! The other is: possible newer versions what we never see!
The UK companies collapse when happened? The UK EP magazine say summer 1986.
What did you worked after the 2.1 BASIC and EXOS finished until the collapse? (The 2.1 manual are dated as Jan. 1985. The EP128 with this version released at May 1985. I think some time needed for testing and produce ROM chips, probably these 4 months enought.)