On 2021-08-01 1:14 p.m., Zane Healy via cctalk wrote:
On Aug 1, 2021, at 7:10 AM, Liam Proven via cctalk <cctalk@classiccmp.org>
wrote:
CP/M is surprisingly alive for something so old and rudimentary and
seeing some activity, e.g. CPMish, but I don't think anyone would
claim it has much of a future. CCP/M is dead although I think Toshiba
just about supports 4680 and 4690.
I have to admit, this one surprises me.
I'm struggling to think of anything else. There are things but they're
even more niche than say Haiku. Redox OS? Genode? HelenOS?
OpenVMS 9.2 will run on x86, as does the 9.1FT that’s currently out. I believe
they’ve even had it running on an Atom-based board.
z/OS runs on IBM Mainframes, there is also “IBM i”, which was previously called
OS/400.
OS/400 is a direct descendant of the operating system on S/38 one of the
actual products that was based on ideas from the "Future Systems"
project of the 1970s. It also had some of the ease of use features of
the S/36 operating system rolled into it. Even the hardware of the
first AS/400 systems was similar to the S38. Besides the single level
store, another major feature was user programs ran on a microcode layer
that hid the actual hardware, this allowed for significant changes to
the underlying hardware during the lifetime of the systems without
impact to customer programs.
The hardware of the S/36 was much simpler and completely different it
came from a series that started with S/32. While unspectacular in terms
of hardware S/36 was loved for it ease of use and the announcement of
its demise was not well received by customers.
Paul.
