[Info-vax] For sale: VAXstation 4000/90 128MB Fully Working and Tested

[Johnny Billquist]

On 2022-07-02 05:23, Dave Froble wrote:
> On 7/1/2022 8:56 PM, Arne Vajhøj wrote:
>> On 7/1/2022 6:50 PM, Bill Gunshannon wrote:
>>>                                                 How many shrinks
>>> to increase speed?  How many new peripherals were made available?
>>> We didn't even get decent network cards or even disk controllers for
>>> things like SCSI except from third parties.  Trust me, people using
>>> PDP-11's could see the writing on the wall.
>>
>> Both end customers, ISV's and DEC could see the writing on
>> the wall - 16 bit did not have a future.
>>
>> Everybody (read: most) wanted first 32 bit and later 64 bit.
> 
> More important was virtual addressing.  As in VAX ...

Uh. You forgot the 'X' as in *extension*. It wasn't that the PDP-11 
didn't have virtual addressing... But the space was smaller.

> The VAX was a good follow-on to the PDP-11.
> 
> PDP-11 did not have the addressing capabilities for more complex 
> systems. Getting rid of (hawk, spit, gag) TKB was the best ever.

Well, the "capability" missing was the amount of bits available.

And yes, TKB, while very clever, was slow, and you had to work a lot to 
get a good end result. Work time that could be better spent elsewhere.

   Johnny