31 Dec
2017
31 Dec
'17
9:38 a.m.
On Sun, Dec 31, 2017 at 6:41 AM, Noel Chiappa via cctalk <
cctalk at classiccmp.org> wrote:
I'm not familiar with that memory mapping hardware so this is idle
speculation: mapping every virtual page to the same physical page and the
idle loop instead of "jump to top of loop" does "jump to top of loop +
page
size"
-- Charles
Stranger still is the "fancy" lights in
RSTS ... "Fancy" because it
produces a rotating pattern not just in the data lights which is
easy,
but also in the address lights. It runs in
supervisor mode
Ah; it must busy loop at loops spread across the address space? Clever!
(Perhaps using the mapping hardware so that it doesn't use too much
_actual_
memory.) Is the source available?