Re: ICL Oldtimers--Packed numeric formats in ICL 1900?

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"Timothy P. Cheney" <tch...@soda.pop.upenn.edu> wrote in message
news:c0t9f9$6nu3$1...@netnews.upenn.edu...
> This group looks dead but I'll give it a shot. I am trying to
> save some data from tapes written on ICL 1900 in the eighties
> in southern Africa. I can convert some of the data from ICL
> six bit characters to ASCII using a translation table but some
> of the data looks like it might be some kind of binary representation.
>
> For example there are alot of (,@,H, and P characters where it does
> not make particular sense. These coincidentally have octal codes
> of 30, 40, 50, 60 which means that the last three bits for all are
> 000. Was there some format in which the 3 low and high order bits
> were swapped?
>
> If you have any info on data formats for this old system I would
> greatly appreciate it as this is the only copy of this data.
> --
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> | tch...@pop.upenn.edu |
> | Timothy P. Cheney (215) 898-3197 |
> | Population Studies Center |
> | 219 McNeil/6298 |
> | University of Pennsylvania |
> | Philadelphia, PA 19104 |
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