Date   : Sat, 15 May 2010 02:29:18 +0200
From   : kortink@... (John Kortink)
Subject: ReTuLa, a Tube ULA

On Fri, 14 May 2010 23:06:31 +0100, Ian Stocks
<bbcmicro@...> wrote:

>Mike Tomlinson wrote:
>> In article <uubru51g8ouveqkr4981oph7dh9dqqrre8@...>, John Kortink
>> <kortink@...> writes
>> 
>>> But, strangely enough, almost nobody clicks on the
>>> images for the larger ones .....
>> 
>> They're perfectly clear as they are.
>> 
>> That is a lovely board.  Are the holes not plated through? (just
>> wondering about the additional soldering on the pins above the row of
>> links in snapshot2.)
>> 
>
>Which holes?, I think you'll find they are just pads on the underside, 
>the middle 8 pins of the pin headers dont go through the board, if they 
>did they would end up puncturing the leads of the Chip on the other side.

'Douze points !'

>I wonder if the links are there as a way of connecting the middle 8 
>pins, maybe the original idea was to bend the pins over and solder them 
>where the links are.

No, they're not links. They're optional reflection
dampening resistors in the host directed data lines.


John Kortink

-- 

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Homepage : http://www.inter.nl.net/users/J.Kortink

Those who can, do. Those who can't, manage.