10 Apr
2024
10 Apr
'24
3:25 p.m.
On 4/10/24 07:18, CAREY SCHUG via cctalk wrote:
Nearly all the 360s were microcoded, so adding a bit
more microcode let them emulate 1400/7000 series computers as a standard optional feature.
(well the model 44 emulated the 1620, and probably the 95/195 could not emulate anything
since they were hard wired).
The model 44 was not microcoded. It had faster floating
point than a model /50 but no decimal or string
instructions. Emulation of these was done through trap
handlers. I would assume any other machine emulators were
done by something like an emulation wrapper program - like
Virtualbox or VMware. The model 44 had no channels, there
was only direct I/O (a set of 32-bit parallel input and
output registers) and a pair of cartridge hard drives inside
the CPU cabinet. Think DEC RK05s.
Jon