FPGA VAX update, now DIY TTL computers

[Allison]

>
>Subject: Re: FPGA VAX update, now DIY TTL computers
>   From: woodelf <bfranchuk at jetnet.ab.ca>
>   Date: Fri, 04 Nov 2005 10:19:25 -0700
>     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Allison wrote:
>
>>There is also the matter of fault tolerence.  Parity doen't provide that
>>unless the OS can map out the offending bank and the offending bank
>>isn't in a critical location.  ECC can keep you going if you have a 
>>stuck bit but it's up to the user/maintence to fix asap.
>>
>>  
>>
>But does any software even consider being able to be rolled back from a 
>check point nowdays?
>With a well designed  virtual memory system ( no gui stuff  I guess ) a 
>process that takes several
>days? or more to process needs to interuptable and saveable.

I think VMS and a few of the real OSs do but PCs nah.


Allison