Solved

Posted on 2000-02-28
147 Views
I want to add ram on a system
I have the M/B Booklet and i know witch combination the M/B Accepts...

But Id like to know what is what the x36 Suffix means..
its say the M/B accepts 1Mx36,2Mx36,4Mx36,8Mx36
which are 70ns or faster

i know the computer has 32Mb in the first Bank (simm1/simm2)
and only one of the combination match this, so i need to get whats missing to go up to 64Mb!

But The x36 i do not understand..

Hope you can fill me in!

Note: I can add the combination table on this if you need!
0
Question by:njacques
[X]
###### Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

• Help others & share knowledge
• Earn cash & points

LVL 7

Expert Comment

ID: 2567387
I'll assume you are refering to 72 pin simms??

X36 is parity ram
X32 is non parity

Without going into real detail basically parity is error checking.
0

Expert Comment

ID: 2567514
Hey sorgie,
you did pretty good.  You had the answer almost an hour before he asked <grin>. Where can I get one of those crystal balls, like you have?
0

LVL 8

Expert Comment

ID: 2568071
lol
makin his rounds
preying on the weak
arg
0

LVL 11

Accepted Solution

ID: 2568400
On a 36 bit wide SIMM, it is 32 bits wide to the system, and has an extra 1 bit for every 8 bits for parity checking. 8 bit wide 30 pin SIMMs are 9 bits wide when they have parity, it's a carry over from that. One thing you should note however, is that when RAM is counted in this way, it is counted 32 bits wide instead of 8 bits wide, which means that to get the conventional value of the SIMM required you need to multiply (or conversely divide) by four, hence a 1x36 SIMM is a 4mb SIMM with parity. A 32 Mb SIMM with parity would be given as 8x36 under this format. You will probably find you were looking at the configuration for a 128 Mb SIMM in the system. A lot of 486 boards had a limit of 192Mb (Don't ask me why) so that is why you could only find configurations with only one 32x36, the other chips with that would I guess have been given as one 16x32 or 2 8x32. Anyway, look at the configurations with 8x32 in,

regards,

0

LVL 12

Expert Comment

ID: 2569866

This is a "known" bug in the E-E software;
0

LVL 7

Expert Comment

ID: 2569913
The Vulcan Mindprobe!
0

LVL 1

Expert Comment

ID: 2570919
njacques>>> They're all mental here aren't they? Tip of the week: If you have crystal balls.... no, I won't even go there. I reckon you should award the time travelling Sorgie with the points or he might get you with his mind probe.
0

LVL 11

Expert Comment

ID: 2571408
Whoops, mistyped that last, I meant look for the config with 8x36 in.
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

### Suggested Solutions

Brother printer model tt support digital line fax & use same cartridge as DCP-J315W 11 89
what am i doing here 3 56
Nifty tent 7 85
Hard drive that host VMware 4 32
In this article you will get to know about pros and cons of storage drives HDD, SSD and SSHD.
Great sound, comfort and fit, excellent build quality, versatility, compatibility. These are just some of the many reasons for choosing a headset from Sennheiser.
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
###### Suggested Courses
Course of the Month7 days, 2 hours left to enroll