Date   : Fri, 09 Jul 1993 19:15:13 BST
From   : ajcd@...
Subject: Colour Graphics

From: David Andrew Sainty <David.Sainty@...>
>
>Does anybody have the pinout for the tube connector? That no doubt will have
>a faster clock line on it, but I don't have information on it.

The most likely looking signal in the Tube docs is:

Pin     Name    Type
19      HPHI2   TTL input 1 LS load

a.