DIY Paper Tape Punch - Mechanism diagram?

[dwight]

If you go with punch pins, standard drill rod is not hard to get. It often comes in materials that can be easily heat hardened.
Dwight

________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Torfinn Ingolfsen via cctalk <cctalk at classiccmp.org>
Sent: Saturday, May 2, 2020 4:14 AM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: Re: DIY Paper Tape Punch - Mechanism diagram?

On Fri, May 1, 2020 at 7:32 PM Tony Duell via cctalk
<cctalk at classiccmp.org> wrote:
>
> As far as I know the 5-hole side is always the most significant 5
> bits, the 3 hole side the least significant 3 bits. In other words the
> holes go :
>
> 76543S210
>
> Where S is the sprocket hole and a digit is the bit number (bit 0 is
> the least significant bit).
>
> As to which way use the tape, with the tape feeding towards you, the
> sprocket hole is normally offset towards the right, that is the bits
> would read with the MSB on the left. I am not sure if that is
> universal though
>

FWIW, the ECMA standard is here https://www.polyomino.org.uk/computer/ECMA-10/
(found via Wikipedia)

--
Regards,
Torfinn Ingolfsen