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Article #19628

Need help with mystery 286 motherboard

#19628
From: Kevin Fowler
Date: Sun, 24 Jan 1993 09:51
35 lines
1362 bytes
I've recently acquired at 286-12 system without docs.
What I need to find is the (probable) function of the jumpers.

Here is what I know about the system:

	286-12
	VLSI Chipset
	Phoenix Bios 3.10
	Made in Taiwan ROC
	There's a sticker on the board with RN8910 on it
	It appears to accept up to 1 meg of 41256s or
	4 meg of 44256 or 1x9 SIPPs

There are 7 (?) jumpers (what I'd like to know about):

	J1 - adjacent BIOS (for adjusting bios size?)
	J2 - \
	J3 -  - adjacent VLSI chip VL82C102A
	J4 - /
	J5 - Non Existent (at least I can't find it :)
	J6 - In the vicinity of the CPU
	J7 - \
	J8 -  - Near the keyboard/CMOS area

There are also 3 connectors (other than the Front Panel stuff)

	CN1 - Mystery 4 pin between CMOS and CN2
	CN2 - Keyboard connector
	CN3 - Power

Any information that can be added to this would be helpful

-- 
-- Kevin Fowler / kevinf@agora.rain.com ------------------------------------
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!psgrain!m2xenix!agora!kevinf

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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!psgrain!m2xenix!agora!kevinf
From: kevinf@agora.rain.com (Kevin Fowler)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Need help with mystery 286 motherboard
Summary: need jumper info
Keywords: configure 80286 motherboard
Message-ID: <C1CrEH.74C@agora.rain.com>
Date: 24 Jan 93 09:51:51 GMT
Article-I.D.: agora.C1CrEH.74C
Organization: Open Communications Forum
Lines: 35