[HECnet] Assigned areas and unassigned areas

[Johnny Billquist]

On 2015-06-15 14:10, Lee Gleason wrote:
>
>
> -----Original Message----- From: Johnny Billquist Sent: Sunday, June 14,
> 2015 9:18 PM To: hecnet at Update.UU.SE Subject: Re: [HECnet] Assigned
> areas and unassigned areas
> On 2015-06-15 03:44, Dave McGuire wrote:
>> On 06/14/2015 09:40 PM, Johnny Billquist wrote:
>>>>> This is remarkably impressive for a dead protocol on dead computers :)
>>>>
>>>>     Dead?  Mine run great.
>>>>
>>>>     I just resurrected my PDP-11/05 today.  11/55 last week.
>>>
>>> Unfortunately, the 11/05 will not ever be able to run my TCP/IP.
>>
>>    True.  It's a bit, erm, limited.
>>
>>> However, the 11/55 could possibly stand a chance.
>>
>>    Huh?  Doesn't RSX11M-Plus require more than 18 bits' worth of RAM, and
>> doesn't your IP stack require -Plus?
>
>> Yes on the second question, and sortof maybe not on the first one.
>> Officially M+ requires 22-bit addressing, but it can be generated for
>> 18-bit systems. But I have never tried it to see how it fares...
>
>> Johnny
>
>   I've heard reports it tends to leave you a little tight on pool.

I wouldn't expect pool to be a problem. Pool is really limited by 
totally different parameters, and in fact, I would think that an 11/55 
might have plenty of pool. An 11/24 on the other hand is totally staved 
on pool, even if you have 4M in the machine... (And that is a supported 
machine.) The key is split I/D space.

However, the 11/55 might be short on memory in general... The GEN 
partition might not hold enough to make the system that usable. Lots of 
swapping possibly.

	Johnny