Date   : Thu, 28 Oct 2010 00:20:45 +0100
From   : jgh@... (J.G.Harston)
Subject: Reversing the Tube ULA (destructively)

John Kortink wrote:
> Yes. But properly implementing nDACK can be more involved
> (depending on the logic chip) due to timing issues. Maybe
> the ARM evaluation system uses it.

No, tied to +5v.
(http://mdfs.net/Info/Comp/BBC/Circuits/armcpu.gif)

-- 
J.G.Harston - jgh@...