On Nov 18, 2021, at 1:26 PM, Supratim Sanyal
<supratim at riseup.net> wrote:
On 11/18/21 11:10 AM, R. Voorhorst wrote:
Hi,
Hi.
...
2. The simh config file for configuring a working simh Pdp11/34 with the proper
throttling to make it work; the proper setting is important because of Chk11 init phase
which is instruction timing based!!!
How does one arrive at a realistic argument
for throttle? Did you put 2000/1 because you reckon your host processor does 2000
instructions in the same time as the guest processor does 1? Or is it more pure clock
speed based?
SET THROTTLE 2000/1
Check the docs ("help set throttle"). The simplest is to say what instruction
rate you want: "set throttle 300k" is probably a pretty realistic setting to
make it look like an 11/20; "set throttle 2m" is a somewhat optimistic 11/70.
paul