Old tandy 1000 keyboard 8 pin din pinout? - test-drb@ccmp.vtda.org

12 Nov 2000

From: Don Maslin &lt;donm(a)cts.com&gt;

...
   Not all the
same pin functions.  Some internal differences, V40 has
 async serial IO for example.  Nicer part. 
Yes, I know about the serial IO.  I've used it.  But are the pin
functions sufficiently different that you canmot use it as a direct
replacement for the 80186?  If so, it is a departure from what you could
do with the V20 and V30. 

Indeed it wasdeparture.  the V20/30 was an attempt to wrest the 8086
market from intel... a few years in court NEC won as it was indeed
much different inside.  What's bizzare is NEC also was licensed
for and made the 8088/6 fully compatable part too.

Anywho the differnces are enough that dropin is not done.

Allison