17 Mar
2005
17 Mar
'05
6:51 p.m.
From: "Randy McLaughlin" <cctalk at
randy482.com>
---snip---
Today density select is a general purpose IO pin, originally the 765 used
the direction pin as a dual purpose pin.
This dual purpose description is now gone but maybe not the action.
There is no need for TG43 in todays PC's, at least not as far as the
manufacturers are concerned. When the need for a "new" density select line
came it was accomplished through a separate IO but was the old reduced
current logic removed?
Hi Randy
That is a good question? I would guess that it went the
way of the FM ability. When they were looking for things
to cut, a magnitude comparitor would have sticked out
like a sore thumb.
Dwight