ISIS-II disks with PLM80 and ICE80 software.

Eric Smith spacewar at
Tue Feb 2 13:34:36 CST 2016

On Feb 2, 2016 11:35 AM, "Mattis Lind" <mattislind at> wrote:
> I now have concluded that the second disk is infact a disk for a
> Tandberg TDV21xx machine. The TOS operating system is supposed to have
> similarities to ISIS. The disk structure and the presence of files like
> ISIS.DIR, ISIS.MAP etc among othes.

I wonder whether Tandberg licensed ISIS-II from Intel and modified the
directory (and perhaps other stuff). I haven't ever seen evidence that
Intel particularly tried to license ISIS-II to OEMs, but if one came
knocking, they might not have turned them away.

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