On Fri, 2 Feb 2024 at 10:35, Liam Proven via cctalk <cctalk(a)classiccmp.org>
wrote:
On Thu, 1 Feb 2024 at 23:36, Henry Bent via cctalk
<cctalk(a)classiccmp.org> wrote:
Yes, that does clarify things, thank you.
Ah, good. :-)
Looking as a naive researcher, Wikipedia doesn't have any information on
the ARM processor before 1981 or RiscOS before 1987. Do you have a
source
for your date of the late '70s?
But manifestly not enough. It *is* really stretching my point, though.
The ARM was expressly designed as a sort of 32-bit 6502. It was
Acorn's successor to their BBC Micro range of 6502 machines. The BBC
Micro came after the Acorn Atom, and that after the Acorn System 1, 2
& 3.
https://en.wikipedia.org/wiki/Acorn_Eurocard_systems
The BBC Micro OS was called MOS -- Machine Operating System. It was
not Arm-native because Arm didn't exist yet. But Arthur and RISC OS
(Arthur 2) are based on a command-line-only core OS which is a 32-bit
version of MOS.
(There was also a single model of machine with a 16-bit version for
the 65C816, the Acorn Communicator.)
This is all excellent information, thank you.
I am being cross-examined on a flippant throwaway
comment, but it's
fair and I brought it upon myself. :`D
I don't mean to be harsh or critical, I'm just trying to find information
about a software and hardware ecosystem that I have very little knowledge
of, and I suspect many folks on this list also are not very familiar with.
-Henry