On Tue, Jul 13, 2010 at 5:00 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
   Close - DTACK
Grounded. ?DTACK is DaTa ACknowledge, a signal pin that 
 I learnt it as 'Data Trander ACKnowledge'. A similar signal to SSYN on
 the Unibus ;-) 
 
Oops... serves me for relying on ancient neurons instead of looking it
up in the handbook - yes... Data Transfer ACKnowledge.
-ethan