[HECnet] VS4000/90: Up and running!

[Clem Cole]

On Sat, Feb 9, 2013 at 4:31 PM, Jordi Guillaumes i Pons <jg at jordi.guillaumes.name> wrote:
DS1287A

Poking it around it looks like the DS1687 is reasonable replacement.  

http://www.jameco.com/Jameco/Products/ProdDS/781134.pdf
http://pdf1.alldatasheet.com/datasheet-pdf/view/115535/DALLAS/DS1287A.html

The 1287A was a replacement for a Moto part used in the IBM PC:    There is an app note on how to replace it, which is what made me look at the DS1687.

http://www.jameco.com/Jameco/Products/ProdDS/25101.pdf

Dallas semi says the 1687 is SW compatible with the 1287A which I think is what you need to care about and then maybe a little HW hacking, although it looks fairly close.   Needs to check any timing differences and the name of the RW/WR pin is different - but they >>might<< work the same way (might also need to be inverted).

Clem