Re: 164SX H/W question

["Alexander S. Guy" <alex luxlucis com>]

>>>>> "Larry" == Larry Snyder <larrys@lexis-nexis.com> writes:


    Larry> Is pin 1 on the ribbon header connectors toward or away
    Larry> from the power connector.  I didn't see any obvious

Which connectors?  _Most_of_the_time_ pin one (usually marked red
on the ribbon) is towards the power.

    Larry> markings.  Also, is J20 (the multipurpose connector)
    Larry> counted from the cpu edge of the board?  Ohm- meter checks
    Larry> seem to suggest so (and likewise that the ribbons count
    Larry> from the end away from the power jack).  I'm just paranoid
    Larry> enough to want confirmation before I fire it up.

Nod.  Which edge? ;)  If you hold the motherboard, with the 21164 socket
away from you and the ``ATX'' edge connectors towards you, J20 starts counting
from the far edge (i.e. the upper left corner of J20 is pin 1, the upper
right corner is pin 2).

I hope this helps... BTW, check out:

    http://www.digital.com/semiconductor/alpha/dsc-pc164sx.html

That has links to all the information (I think) you could want about the 164SX.


Alexander