HP board id?

[COURYHOUSE at aol.com]

Many Thanks for the HP 1000  interface board manual...  We have  the old  
one here at the museum   with the   2115, 2116  etc    but it has  gotten 
brittle on the  back  binding and  if  we  do not have to open  it.......
 
At one  time  when we  would building voice boards  to  the 2000/1000 
series  back then  we  had scored a batch  of   blank  IO  proto boards with the 
buss   tag  traces   on  them.. be interesting to see if   I  saved any...
 
Thanks !  Ed#   _www.smecc.org_ (http://www.smecc.org) 
 
 
In a message dated 5/16/2015 3:42:18 P.M. US Mountain Standard Time,  
pbirkel at gmail.com writes:

That is  a *really* nice document, in so many ways.  Thanks for sharing,  
and
for the answers to earlier questions :->.

On Thu, May 14,  2015 at 11:31 AM, J. David Bryan <jdbryan at acm.org> wrote:

> On  Thursday, May 14, 2015 at 1:46, Paul Birkel wrote:
>
> > What  do they recommend on the receiver-end?
>
> LSTTL with a 4.7K  pulldown to -2V on the input.
>
>
> > Is the "HP 1000  M/E/F-Series Computers I/O Interfacing Guide"
> > (02109-90006  September 1980) available online somewhere?
>
> I thought I had  sent it to Al some years ago, but it's not listed.  In 
any
> case,  I've posted it here:
>
>    http://home.earthlink.net/~jdbryan/dropbox/02109-90006_Sep-1980.7z
>
>  See chapter 5, pages 5-5 and 5-6.
>
>          --  Dave
>
>