11 Jul
2016
11 Jul
'16
5:35 p.m.
Thanks for the detailed answer. I see the front panels look remarkably similar though.
Short of redoing a 360/50 on an FPGA (I'd need to retire to have enough time for this
one!), could I use the /50 panel with the /65 emulator?
Marc
On Jul 12, 2016, at 1:11 AM, Jon Elson <elson at
pico-systems.com> wrote:
On 07/11/2016 06:40 AM, Curious Marc wrote:
No kidding! That's a massive effort. How close is that to a 360/50? I have a front
panel that needs a brain, could sure use that!
360/50 is a 32-bit machine, the real
thing has a core memory "local store" and (3, IIRC) built-in channels. it does
not allow memory interleaving.
The 360/65 has a 64-bit path to memory, and does permit interleaving. it also allows two
/65s to be put together in a multiprocessor system. There are a few additional
instructions to communicate between CPUs. The 65 has solid state local store, and a
56-bit ALU, so it can do double-precision floating-point arithmetic without having to
double up the cycles, as the /50 does. The /65 has no built-in channels.
Jon