29 Dec
2002
29 Dec
'02
1:32 a.m.
On 28 Dec 2002, Frank McConnell wrote:
No. Symbol characters do not follow this rule, for
example the period
character '.' is encoded as punches in rows 12, 3, and 8.
You should assume that any combination of rows may be punched. As a
general rule, I think you'll find that for cards containing printable
characters, no more than 3 punches are made in any column, but I don't
think you can assume this for cards containing binary data.
That's what I feared. I'll have to come up with an elegant way to decode
the data.
Doug Jones has a page that you should look at:
<http://www.cs.uiowa.edu/~jones/cards/codes.html>
...but I can't get there right now, so you might need to look in
Google's cache (long URL w/wrap):
<http://www.google.com/search?q=cache:AeJS4EmmG4gC:www.cs.uiowa.edu/~jones/cards/codes.html>
Just what I was looking for! Thanks!
Sellam Ismail Vintage Computer Festival
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