Need paper tape encoding format

From: Hans B Pufal <hansp_at_aconit.org>
Date: Thu Feb 28 14:49:09 2002

Vintage Computer Festival wrote:

> Is there info somewhere that shows how symbols are encoded onto paper
> tape?
>
> Ideally it would include the actual hole positions like so:
>
> 8 4 2 1
> A: *
> B: *
> C: * *
>
> (Note: this is not an actual example but just an example of the format
> I'm looking for. Of course.)


Normally on 8 hole paper tape, the coding is the ASCII value

    8 7 6.5 4 3 2 1

0 o.o 0x30
1 o.o o 0x32
A o . o 0x41
B o . o 0x42
C o . o o 0x43

(where o = hole, . = sprocket hold)

The 8th position may be used for parity, to make the number of holes in
each frame odd or even.

Of cours entirely differenct coding could be used depending on the
systems and programs used but this is the most "standard".

   -- hbp
Received on Thu Feb 28 2002 - 14:49:09 GMT