Thema: Re: N51SX(8551) SIMM??
Datum: 18.09.97 03:45:23
From: bwigg@worldnet.att.net (Billy Wiggins)
To: Peterwendt@aol.com

Peter,

I would be happy for you to add it to your site. All I did was use a standard 72 pin 2MB 512K x 36 PNY SIMM and add the jumpers to it and wound up with the gnd on 68 and 70. I also clipped the plastic tab on SIMM socket. (Like that was gonna stop a true hacker)

I don't think I could make up a schematic with my mailer. What's your pages address I would like to see it.

Billy
Albany, Ga


So - while just being busy on reworking my pages, I tried to picture Billys modification on the 2MB-module. It will probably be not exactly how his module looks like - but show the principle.

A diagram of the module:

Before conversion:


+------------------------------------------------------------------------+
| ################  ################  ################  ################ |
| ##### Bank #####  ##### Bank #####  ##### Bank #####  ##### Bank ##### |
| ####### 1 ######  ####### 2 ######  ####### 3 ######  ####### 4 ###### |
| ################  ################  ################  ################ |
+-+                                                           xxoo       |
  |1 |||||||||||||||||||||||||||||  __  ||||||||||||||||||||||||||||  72 |
  +--------------------------------+  +----------------------------------+
                                     ^--Round notch about 2mm deep

                                                              ||||
o= open connection                                         67-++++-70
x= zero ohm resistor                                           ||
                                                           68--++--69


After conversion:


+------------------------------------------------------------------------+
| ################  ################  ################  ################ |
| ##### Bank #####  ##### Bank #####  ##### Bank #####  ##### Bank ##### |
| ####### 1 ######  ####### 2 ######  ####### 3 ######  ####### 4 ###### |
| ################  ################  ################  ################ |
+-+                                                           oxox       |
  |1 |||||||||||||||||||||||||||||  __  ||||||||||||||||||||||||||||  72 |
  +--------------------------------+  +----------------------------------+
                                     ^--Round notch about 2mm deep

o= open connection
x= zero ohm resistor


In case Billy manages to rework a 4MB- or 8MB-module, the results will be published here as well.

Back to the Article
Visit my Homepage

© 1997 by Peter H. Wendt / pw-software production