Suntac 80286 Mainboards

Discussion about old PC hardware.

Suntac 80286 Mainboards

Postby Predator99 » 2017-4-13 @ 16:44

This week I received the 80286 board I ordered here
viewtopic.php?f=46&t=17341&start=16407

Paid much too much money but I liked to have it.

Its my 4th Suntac 80286 Board. Reason I am collecting them is that my 1st Computer from around 1988 I learned everything with had such a Mainbaord. Unfortunately I have "lost" the whole Computer within the last 5 years. I spend days to search everywhere but I didnt find it :depressed: A GUS PnP Pro was also installed. Still have not found exactly the same board again.

So I will use this thread to post pictures, manuals and BIOS images of these boards. Hope its interesting and maybe useful for somebody else trying to get these running...otherwise delete :blah: Contributions are welcome :lol:

So 1st the unboxing of this "brand new" Magitronic A-B236 board.

Unfortunately the box and the manual is in bad condition and rather moldy....as said, paid too much for it :dead:
IMG_2986-600.jpg

IMG_2991-600.jpg


Will add a Scan of the manual and the contents of the driver disk in the next days...
IMG_2996-600.jpg

IMG_3000-600.jpg


The board itself is in very good condition. The battery already started leaking and I removed it in good time. Not too much damage. Yes, its unused and new!
IMG_3011-600.jpg
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-13 @ 16:46

IMG_3008-600.jpg

IMG_3022-600.jpg

IMG_3023-600.jpg
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-13 @ 16:49

I installed RAM, CPU and BIOS from this still damaged board
viewtopic.php?f=46&t=52549


and it works perfectly :cool: :cool: :cool:
IMG_3035r.jpg

IMG_3028-600.jpg

IMG_3039r.jpg


____
After taking a second look the driver disk seems to be only a copy, the label does not match the content. However, the correct Suntac EMS driver is included, together with drivers for NEAT Mainboards and a BIOS Setup utility. All included in the ZIP.

Code: Select all
1989-09-13 11:39           462           104  ATSETUP.BAT
1989-09-13 11:53            38            36  EMS.BAT
1989-09-13 11:51           235           110  NEAT.BAT
1988-06-03 16:12         12720          7647  ATSETUP\SET286.EXE
1986-06-30 10:28         24096         11776  ATSETUP\SETUP.COM
1988-02-06 16:07         11067          5296  ATSETUP\SETUPAT.COM
1989-09-13 12:00           377           253  EMS\EMS.DOC
1988-11-14 10:49         12754          4777  EMS\SEMS4.SYS
1988-12-22 16:29         12757          4758  EMS\SEMS5.SYS
1989-05-02 17:56            38            38  NEAT\CONFIG.SYS
1988-11-07 20:10         22000          5868  NEAT\EMM.SYS
1987-12-10 11:15          3330          1361  NEAT\EMM400.DOC
1989-05-02 09:56          5439          1656  NEAT\MGTNIT.EXE
1987-11-07 09:42        177816         16081  NEAT\NEATCNET.DAT
1987-11-07 09:42          4079           555  NEAT\NEATPGND.DAT
1988-10-04 10:51         27680          9547  NEAT\SETNEAT.COM


Code: Select all
SUNTAC-62 Chip Set EMS Driver Version 4.0 Release 1.0 (C) LIUSKI-MAGITRONIC

Suntac ST 62 80286 EMS Driver.zip
(70.13 KiB) Downloaded 69 times


The manual also does not really match to this exact kind of baord layout. The board in the manual does not seem to have SIP sockets.

Magitronic B236 80286 Suntac Manual.pdf
(4.78 MiB) Downloaded 68 times


So..not a good deal, but nice to have. If somebody interested anyway, the dealer has more of these boards available...
Last edited by Predator99 on 2017-4-14 @ 10:29, edited 4 times in total.
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby gdjacobs » 2017-4-13 @ 18:20

Maybe a candidate for a SIMM slot mod/adapter?
http://sbfmdrv.blogspot.ca/2016/01/usin ... sipps.html
User avatar
gdjacobs
l33t++
 
Posts: 6073
Joined: 2015-11-03 @ 05:51
Location: The Great White North

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-14 @ 09:13

Yes, this looks interesting and these adapters are new to me!

But I have some SIPs available and this board going to be stored in the shelf ;-)

I have added driver disk and manaul above.
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-14 @ 10:22

So next example is the board from this thread
viewtopic.php?f=46&t=52549
IMG_3048r.jpg

IMG_3058r.jpg


It looks like it is in very good condition, but it is still not working. BIOS, RAM etc are OK as I tested them in the Magitronic board above


Jumper settings are here, thanks again to creepingnet for the link:
http://www.uncreativelabs.de/th99/m/U-Z/33180.htm

Screenshots from the Magitronic above are with the BIOS shipped with this board, its Award V3.03HLS

Code: Select all
286 Modular BIOS Version 3.03HLS Copyright Award Software Inc.     


BIOS images here...
SUNTAC 80286 Award V3.03HLS BIOS.zip
(43.44 KiB) Downloaded 22 times
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-14 @ 14:26

3rd one is this here
IMG_2883s.jpg

IMG_2898r.jpg


AUVA COMPUTER, INC. BAM/12-S2
Jumper configuration is here
http://stason.org/TULARC/pc/motherboard ... 12-S2.html
http://th99.classic-computing.de/src/m/A-B/32297.htm

As I got this board I was confused because of the weird setting of the DRAMs - has somebody forgot the 4 chips while scrapping the board? But its the correct configuration: "When there are 2 chips in Bank 0 or Bank 1, they are placed in BS1 and BS2 respectively."

Fortunately this board works without problems now. The leaking battery destroyed all traces connecting to the keyboard, but I replaced them with wires.

BIOS is the Phoenix 3.10 10.
IMG_3062r.jpg

IMG_3067r.jpg


Suntac Phoenix BIOS 3.10 10.zip
(47.67 KiB) Downloaded 7 times


I assume all those BIOS are exchangable between the different boards even if there are minor differences in memory configuration...
Last edited by Predator99 on 2018-12-23 @ 22:46, edited 1 time in total.
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-15 @ 10:41

My currently last board is this here. Powered up one time and never again :-(
"SER 286S"
IMG_2668r.jpg

IMG_3080r.jpg


Award BIOS Version 3.03GS

DSC_0309r.jpg

Suntac-ROM2.zip
(23.17 KiB) Downloaded 16 times
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-15 @ 10:44

And this is the manual of the board that was installed in my 1st computer which is lost and I am searching for - HT-286.

HT-286r.pdf
(2.25 MiB) Downloaded 57 times


The manual is quite interesting as a wiring diagram is included.

Mainbaord-0014.jpg

Mainbaord-0015.jpg

Mainbaord-0016.jpg

Mainbaord-0017.jpg


Thats it for the moment - hope it will also be for some use for you ;-)
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Robin4 » 2017-4-17 @ 03:29

Thanks for sharing all of this information.. I really hope it would be usefull to get my suntac 286 boards running again also.
~ At least it can do black and white~
User avatar
Robin4
Oldbie
 
Posts: 1951
Joined: 2011-4-04 @ 09:52
Location: THE NETHERLANDS

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-4-17 @ 11:16

What is the issue with your boards? Can you send photos?
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-5-28 @ 11:39

So this is my newest acquisition from this lot :-)

http://www.vogons.org/viewtopic.php?f=4 ... ac#p587430

It looks as it was never installed, battery was removed and slight green corrosion in one ISA slot...but overall conditions is excellent!
IMG_0059r.jpg

IMG_0061r.jpg

IMG_0042r.jpg


Bios message (AWARD) is "HLB-286 SYSTEM"

On the board "MBA-009" is printed, dont know the manufacturer.

Will add BIOS images later when I have time to install a disk drive...
HLB-286.rar
(65.68 KiB) Downloaded 16 times
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby skyline486 » 2017-11-07 @ 18:47

I bought the same suntac motherboard of the OP.

I found the system bios rom files from the other post by you. Where can you find the rom file to flash for the keyboard bios?

Sorry I'm new to this. Does all 27256 and 8742 works as system bios and keyboard bios?
skyline486
Newbie
 
Posts: 8
Joined: 2017-10-06 @ 21:54

Re: Suntac 80286 Mainboards

Postby Robin4 » 2017-11-08 @ 04:36

He didnt saved the keyboard bios indeed.
~ At least it can do black and white~
User avatar
Robin4
Oldbie
 
Posts: 1951
Joined: 2011-4-04 @ 09:52
Location: THE NETHERLANDS

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-11-13 @ 17:48

Good question. I dont think there is a way to dump the keyboard bios? And also no way to reprogram such chip? I have read somewhere that Award and Phoenix are not interchangable. But currently my Phoenix Board is running fine with a Award Bios and the original keyboard bios installed. So a Award system BIOS accepts the Phoenix keyboard Bios.
I dont know about the compability of these chips. But I think you can try without the risk of damaging anything. Maybe also the one from a 386 will work? Havent tested this yet.

For system BIOS you can use many comptabible chips also with a larger capacity, doesnt need to be 27256.
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Jo22 » 2017-11-13 @ 20:41

Dumping a keyboard conntroller is difficult, because only a few modern USB programmers can read something like a i8742/i8042.
Making a memory dump is also not possible, since the controller's memory is not visible to the PC.

Edit; Some of the oldschool programmers do support the MCS-48/MCS-41 line of archaic microcontrollers.
But to do so, they may need an optional adapter: https://www.ebay.com/itm/302517478660 and https://www.ebay.com/itm/291526949389
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//
User avatar
Jo22
l33t
 
Posts: 3302
Joined: 2009-12-13 @ 07:06
Location: Europe

Re: Suntac 80286 Mainboards

Postby brostenen » 2017-11-14 @ 21:25

A little tip... A year or so ago, I purchased a rechargeable coincell 3.6volt battery, and replaced a barrel battery with it. They are not super cheap, just affordable enough for a perfect alternative.... Pins ligned perfectly up with the holes on that 486 board I did the replacement on. And it fitted the edge of the motherboard beautifully. The new battery was recharging and did not get warm or hot at any time.

https://www.ebay.com/itm/New-LIR2032-Li-ion-3-6V-Rechargeable-Coin-Cell-Backup-Cmos-Battery-With-2-Tabs/151634844250?epid=1846477129&hash=item234e241a5a:g:N4MAAOSwpDdVGVUE
Don't eat stuff off a 15 year old never cleaned cpu cooler.
Those cakes make you sick I tell.... (never tried though)

My blog: http://to9xct.blogspot.dk

001100 010010 011110 100001 101101 110011
User avatar
brostenen
l33t++
 
Posts: 5109
Joined: 2014-5-07 @ 21:13
Location: Northern Jutland, Denmark.

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-11-24 @ 16:03

Yeah got it :-) :-) :-)

viewtopic.php?f=46&t=17341&start=20340

This is almost the exact board I was searching for a long time: ST62M02-B. The manual I posted above and belonging to my 1st Computer is a ST62M02-A. I remember the CPU was in standard PLCC socket and the DIPs were red.

Already desoldered the battery.

It came with an AMI Diagnostic BIOS I have not seen before:

(C)1987AMI,404-263-8181
01/03/88286-ROM DIAGNOSTICS.(C)1987, American Megatrends Inc.All rights reserved.
4025 pleasantdale road, Suite-320,GA.-30340, Phone-(404)-263-8181.

Will post the BIOS later...

IMG_9910r.jpg

IMG_9889r.jpg

IMG_9898r.jpg

IMG_9899r.jpg
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Predator99 » 2017-12-11 @ 17:45

The seller of this one
viewtopic.php?f=46&t=17341&p=629863

send me today some additional documentation he found :-) Its
- the complete manual of the PC with wiring diagram of the ST62 Mainboard and driver disk
- original invoice dated 1988: 286 Tower, 1 MB RAM, 1.2 MB Floppy, 20 MB ST-125, Monitor and Keyboard for 491 DM ... cannot compare how much money this was
- Hard Disk manual with bad tracks list

Will scan the manual and post it here together with a image of the driver disk when I have some time...

DSC_6502.JPG

DSC_6503.JPG


EDIT: Whats that the driver disk includes the source of the EMS driver..!
SEMS SYS 5,508 10-20-87 1:36p
SEMS ASM 37,120 10-20-87 1:35p
CONFIG SYS 15 05-16-88 8:26a

;************************************************************************
;* *
;* *
;* EMM/EMS driver program for SUNTAC-62 chip set version B1 *
;* *
;* sample program - 10/20/1987 rev. 1.02 *
;* *
;************************************************************************
Attachments
st62ems.zip
(10.96 KiB) Downloaded 18 times
Predator99
Oldbie
 
Posts: 835
Joined: 2016-12-28 @ 19:09

Re: Suntac 80286 Mainboards

Postby Jo22 » 2017-12-11 @ 18:48

Predator99 wrote:- original invoice dated 1988: 286 Tower, 1 MB RAM, 1.2 MB Floppy, 20 MB ST-125,
Monitor and Keyboard for 491 DM ... cannot compare how much money this was

That roughly was ~250€ (or $295), based on the exchange rates from ~1999/2000. :)
https://simple.wikipedia.org/wiki/Deutsche_Mark
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//
User avatar
Jo22
l33t
 
Posts: 3302
Joined: 2009-12-13 @ 07:06
Location: Europe

Next

Return to General Old Hardware

Who is online

Users browsing this forum: gca, kixs, twilliamc, weldum and 7 guests