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AuthorTopic: Who wants to play help red figure out the jumpers?  (Read 5667 times)

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Offline redrumloa

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Who wants to play help red figure out the jumpers?
« on: June 25, 2010, 12:24:37 AM »
I see you want to help, thanks for stopping by! :hammer:



This is a MSC-251AR-BS5-CH single board computer I will be using with a Pentium MMX 200Mhz CPU soon that I will be getting thanks to joekster.

The problem is, I have no manual for this SBC and Google is not my friend either... If you would like a bigger picture of the board, PM your email address to me and I will send a much larger scan.

Lots of jumpers on this board and only jumper numbers, no descriptions..

So far my guess is:
The 2 jumpers on the top left corner of the CPU is bus speed.
The large number of jumpers to the right of the CPU socket is the multipler.
The single jumper to the bottom right hand corner of the CPU socket is the voltage selection.

Any guesses? We have some great minds here :)
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Offline AmigaHeretic

Re: Who wants to play help red figure out the jumpers?
« Reply #1 on: June 25, 2010, 12:34:59 AM »
Quote from: redrumloa;567080
I see you want to help, thanks for stopping by! :hammer:


This is a MSC-251AR-BS5-CH single board computer I will be using with a Pentium MMX 200Mhz CPU soon that I will be getting thanks to joekster.

The problem is, I have no manual for this SBC and Google is not my friend either... If you would like a bigger picture of the board, PM your email address to me and I will send a much larger scan.

Lots of jumpers on this board and only jumper numbers, no descriptions..

So far my guess is:
The 2 jumpers on the top left corner of the CPU is bus speed.
The large number of jumpers to the right of the CPU socket is the multipler.
The single jumper to the bottom right hand corner of the CPU socket is the voltage selection.

Any guesses? We have some great minds here :)


According to this, http://www.delvingware.com/webservices/medialibrary/media/datasheets/MSC-251.pdf , it says it has two serial ports that are jumper selectable for RS232/422/485

It doesn't say which jumper though.
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Offline pyrre

Re: Who wants to play help red figure out the jumpers?
« Reply #2 on: June 25, 2010, 02:35:47 AM »
I think you may be better of contacting any dealer about a tec manual. Unless you already have done so...
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Offline redrumloa

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Re: Who wants to play help red figure out the jumpers?
« Reply #3 on: June 25, 2010, 03:35:23 AM »
Quote from: pyrre;567102
I think you may be better of contacting any dealer about a tec manual. Unless you already have done so...

Looked high and low...
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Offline the_leander

Re: Who wants to play help red figure out the jumpers?
« Reply #4 on: June 25, 2010, 03:37:44 AM »
Quote from: redrumloa;567106
Looked high and low...


Right, I'm bored.

Red, who made the board originally? I want to give my google-fu a workout.
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Offline redrumloa

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Re: Who wants to play help red figure out the jumpers?
« Reply #5 on: June 25, 2010, 03:56:49 AM »
Quote from: the_leander;567107
Right, I'm bored.

Red, who made the board originally? I want to give my google-fu a workout.

Good question. MSC from the best I can tell, what that is short for who knows. This seems to be the model number.



That is from the back, the only clue on the back. You see the same model number on the front... That is it.
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Offline Ni72ous

Re: Who wants to play help red figure out the jumpers?
« Reply #6 on: June 25, 2010, 04:06:58 AM »
Ni72ous
 

Offline the_leander

Re: Who wants to play help red figure out the jumpers?
« Reply #7 on: June 25, 2010, 04:09:35 AM »
Mitac Msc-251al is the closest thing I can find in terms of appearence and model number.

Looking for a manual now.
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Offline the_leander

Re: Who wants to play help red figure out the jumpers?
« Reply #8 on: June 25, 2010, 04:32:13 AM »
Looks like beyond a base tech sheet which I found (which was a glorified brochure) am SOL on the manual.

However looking at NitrousB's link I found the support contact address of support AT industrialpartner.com

You might try and see if they'll email you a pdf of the manual?
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Offline omnicron10

Re: Who wants to play help red figure out the jumpers?
« Reply #9 on: June 25, 2010, 04:38:43 AM »
I found ALI1523 jumpers for a different MB.  that might help you figure out what jumpers the board has and what they might be used for.

http://www.uktsupport.co.uk/acer/mb/v55lan2.htm

The docs USE to be here.  http://www.mitacinds.com/ICP/pdf/MSC251v2.pdf

The link is dead. I tried a few tricks to find it but no luck.

Post this to see if that helps in any way.  This one is pretty hard to find.

This is who seems the be mitancinds.com now.... http://voxtechnologies.com  

Is this it? http://voxtechnologies.com/industrial-pc-solutions/half-size-sbc/sbc-557-a10

A SBC that is VERY close.  Same ALI chipset but tad newer.

http://www.emacinc.com/Archive/PCSBC/sbc-557/manual/sbc557.pdf




They still appear to have SBC ISA machines... look and see if they have one close. Maybe they just changed the model numbers.
« Last Edit: June 25, 2010, 05:03:42 AM by omnicron10 »
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Offline Zac67

Re: Who wants to play help red figure out the jumpers?
« Reply #11 on: June 25, 2010, 11:22:16 AM »
There are two, possibly three (for SS7) multiplier jumpers (BFx). They may be two pins each but most boards have three pin ones. The jumpers will most likely be close to the CPU socket, wildly guessing it's JP9. To make sure, just follow the traces from the CPU socket (Y-33, X-34 & W-35).
Can't do much wrong with trying, too high a multiplier will just prevent boot up, too low you can easily recognize on POST.

Bus speed may be switchable 50/60/66 MHz, usually two three-pin jumpers. They're probably close to the PLL (can't make it out on your shot). Again, nothing to lose, probably set to 66 MHz anyway.

Then there's the voltage problem. It may be just a single jumper (3.3 vs. 2.9 V) or a row of 2x4 or even 2x5, located close to the voltage regulator (JP23?, JP22?). With an old Pentium in place and using a multimeter on the VR you should be able to figure it out.
 

Offline som99

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Re: Who wants to play help red figure out the jumpers?
« Reply #12 on: June 25, 2010, 07:09:31 PM »
Just out of curiosity could you tell me the size of the board and what you are going to use it for?

I got a PicoITX and it's realy small, if I where you I would put the biggest HDDs possible in it, max out the ram then use it as a network storage device or a webserver and built a tiny case for it, using a picoPSU and just resolder it with a AT conector :)
 

Offline redrumloa

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Re: Who wants to play help red figure out the jumpers?
« Reply #13 on: June 25, 2010, 08:05:35 PM »
Quote from: som99;567223
Just out of curiosity could you tell me the size of the board and what you are going to use it for?

I got a PicoITX and it's realy small, if I where you I would put the biggest HDDs possible in it, max out the ram then use it as a network storage device or a webserver and built a tiny case for it, using a picoPSU and just resolder it with a AT conector :)

It is 7.75" x 4.75". I bought it about 2 years ago but haven't used it yet. I am going to try to install it internally in a 1541 drive case to have a whole computer in the 1541 drive. I will probably just use true MS-DOS, because it's main purpose will be for archiving with MNIB and an internal parallel connection to the 1541. I will also probably put 64HDD on it for the hell of it to use with my 128T, if I ever feel the need to. Installing it in a 1541 case will be tricky, but I have a plan...

This board has a Disk-On-Chip socket, which I will probably buy and use for the main OS. I will also get an IDE->CF adapter to be able to move files between the modified 1541, my PC and the 128T at will.

The biggest use will be MNIB for archiving old originals I have to G64. I have several hundred originals, many starting to fail. 1571s (like in my 128T) are very fincky and do not handle old failing disks well. An original 1541 handles old disks a lot better, so a lot better chance of being able to read failing disks.

I did originally chose an older socket 7 SBC for not just the price at the time, but the ability to run real DOS with full driver support.
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Offline redrumloa

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Re: Who wants to play help red figure out the jumpers?
« Reply #14 on: June 26, 2010, 04:54:17 AM »
Well it works. Since this is some sort of industrial board I assumed they must have used an Intel, which is what I was originally looking for and got from joekster today. It posts right away and I can go into the BIOS. Nice BIOS!



It detects the Intel MMX, but is set for 133Mhz.



I'm fine leaving this as 133Mhz for now since I'm not worried about speed. I just gotta look into CPU voltage to make sure it is right...

Thanks to all that helped look for info:hammer:
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