DeltaStreams file-out format and class model

Klaus D. Witzel klaus.witzel at cobss.com
Wed Oct 10 10:42:00 UTC 2007


On Wed, 10 Oct 2007 12:35:20 +0200, Bert Freudenberg wrote:
>
> On Oct 10, 2007, at 11:54 , Klaus D. Witzel wrote:
>
>> On Wed, 10 Oct 2007 10:37:44 +0200, Bert Freudenberg wrote:
>>
>>> On Oct 10, 2007, at 7:15 , Keith Hodges wrote:
>> [...]
>>>> Although many may not agree with me I think there is a lot of  
>>>> potential
>>>> for innovation using the chunk format, and it has the advantage that
>>>> most people have the tools to read it already.
>>>
>>> It's incredibly flexible indeed, and goes back to the B5000 that  
>>> inspired Smalltalk.
>>
>> Interesting. Having worked with almost all B5000 series and successors  
>> and still working with them, what's the chunk format on them (besides  
>> that it has no naked memory pointers, but descriptors)?
>
> Maybe I should have wrote "the idea goes back", not chunk format itself.  
> The idea to have the data itself specify how to be processed comes from  
> there - the tapes had a loader program in front that reads the rest of  
> the tape. I don't know much about the details.

Ah, the clear/start & halt/load tapes :) still in use in emergency  
situations, when disks are down. Will tell my colleagues about  
clar/start's usage in Smalltalk code file chunks :)

> - Bert -
>
>
>
>





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