[HECnet] ANF10 network --> DN200/DN20 --> instant gratification ...?

[Supratim Sanyal]

On 11/18/21 1:35 PM, Paul Koning wrote:

>
>> 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.

I am interpreting the "2000/1" as "wait 2 seconds after one instruction" 
which cannot be right, hence my question.

BTW, throttle is dicey; my MicroVAX 3800 (the SIMH "vax") machines are 
set to 1.9 mips (3.8 times of the 0.5 mip 11/780), but still they grab 
100% of a core running *BSD.

But this is a discussion for the SIMH forum, not here.


> 	paul
>
>
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