Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-19, 08:43

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, after reviewing the manual also noticed what i made wrong with the Power- and Turbo-LEDs, now they are working... I replaced the CPU with another 80286-12, but nothing. I ordered this POST card here http://www.ebay.com/itm/142139186763 Maybe you are right, I will wait until it arrives to get a …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-18, 17:27

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So then...what is the advice? ;-) Should I replace the caps or not? I have learned the Tantalum will not fail and also not the Ceramics. Bute as far as I can see there are no others. In the mean time I bought a replacement of the 473 with the differnt behaviour. I measured the resistance between the …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-18, 10:24

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry for the stupid questions ;-) Regarding the Tantalum caps: I identified 2 different kinds... This one: "A 10µ 16" A104Z-1.jpg A104Z-2.jpg And this one: "A 10 Z" A10-16.jpg Can you tell me what the characteristics are and what replacement I have to look for? I did not find anything abou these …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-17, 22:14

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm yes I agree it did not make much sense what I tried there...its not my goal to completely destroy the board...

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-17, 18:14

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK, I checked most of the capacitors with this method as I only have a simple Multimeter: https://www.reference.com/science/test-capacitors-multimeter-483b105dd3ea036e# All capacitors act like desribed. With exception of this one cap.jpg Unfortunately it is the only capacitor of this kind on the …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-17, 09:07

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So..I did some new tests... The abbreviations RAS and CAS (row access strobe and column access strobe) have been new to me ;-) I expected these 3 Jumpers deal with the memory configuration because of their location. As I received the board the RAM was populated as shown in the picture below DSC_0217 …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 21:20

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@creepingnet: Thanks for that link...!!!!! This seems to be indeed the board with the settings for the JP21/JP22/JP23 which I was not able to find! :-) I dont think the CPU is the issue as it is getting really hot after a few minutes... I will try testing tomorrow...thanks to you all for the moment …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 21:16

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As mentioned here https://allpinouts.org/pinouts/connectors/motherboards/motherboard-pc-speaker/ The speaker has +5v on PIN4 and GND on PIN3 .. therefore when connecting a LED to both it lights up and keeps lighting. Therefore is assume the 5V is stable, but I have not measured it. The speaker …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 21:07

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As written, the ROMs are OK and I added their image files in my initial post (maybe somebody else needs them too). They are in the right order as there are markings "H"/"L" under the chips. I assume the large socket beside is for the optional 80287. According to the manual of the similar board DIP5 …

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 20:21

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just gave it a quick try. Battery is indeed totally empty. I connected a 3V with a wire held by my hands... 😀 But nothing. Maybe I will try to get a soldering iron tomorrow. Yes, maybe there are boards that will not boot without the RTC..but I dont think they will not power up without it?

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Re: SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 19:06

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for your reply! This Dallas Chip is already in a socket and I already tried to replace by another one I had in stock (dont know if this is still working, however). But I am nearly sure that an empty Dallas will not prevent the system from powering up. It will prevent passing the POST, but an …

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SUNTAC 80286 Mainboard help

Posted on 2017-02-16, 18:52

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This week I got this nice SUNTAC 80286 Mainboard. I think have tried everything I can do but it doesnt work :-( - keyboard LEDs are flashing on power-up - nothing on screen - no beep-code I already have - tried different VGAs - re-seated all chips in sockets - tried different jumper settings - …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2017-02-14, 20:50

by

by Predator99

in Marvin \ Sound

in Marvin \ Sound

Wow, cool 😀

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Re: Ensoniq Soundscape leaking capacitors

Posted on 2017-02-08, 12:59

by

by Predator99

in Marvin \ Sound

in Marvin \ Sound

I will also donate my Spea V7 media fx drivers (currently on the way to FesterBlatz 😉) Its REV 0495-6. Filename Spea V7 media fx Drivers 0495-6.zip File size 2.07 MiB Downloads 93 downloads Filename Spea V7 media fxSW.zip File size 3.26 MiB Downloads 89 downloads

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Re: Ensoniq Soundscape leaking capacitors

Posted on 2017-02-07, 17:26

by

by Predator99

in Marvin \ Sound

in Marvin \ Sound

I took the chance and played with my working V7 Media fx and was really surprised to get it running in my 80286. Even the MT32 emulation works! I had expected the drivers require a 80386 at least... However I had several difficulties I like to share. My 80286 needs a /machine:13 parameter to get …

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Re: Ensoniq Soundscape leaking capacitors

Posted on 2017-02-05, 11:30

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by Predator99

in Marvin \ Sound

in Marvin \ Sound

As there seem to be some experts here I take the chance to raise a question :-) I own two of the V7-media fx clones. One of them (on the top) is working perfectly. The other one (bottom) is not recognized at all. I tried several jumper settings and driver revisions without success. Both cards are in …

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Re: Gold Rush! DOS game on IBM 5150... Insert Disk 1???

Posted on 2017-01-16, 21:14

by

by Predator99

in Marvin \ Software

in Marvin \ Software

An when taking a loopk into the install.bat you will see that it does not much more then copying 5 disk _completely_ to the dest. folder and - deletes the bat - renames sierra.com to gr.com Nothing is overwritten during the copying. Therefore it should work without disks in one single directory. rem …

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Re: Gold Rush! DOS game on IBM 5150... Insert Disk 1???

Posted on 2017-01-16, 21:06

by

by Predator99

in Marvin \ Software

in Marvin \ Software

Why do you not post your DIR so we can take a look at it? ;-) Mine is 12.10.2012 21:13 . 12.10.2012 21:13 .. 14.10.1988 00:23 904 _INSTALL.BAT 19.11.1988 00:31 40.520 AGI 18.11.1988 12:10 7.488 AGIDATA.OVL 18.11.1988 12:10 684 CGA_GRAF.OVL 18.11.1988 12:10 591 EGA_GRAF.OVL 19.09.1986 10:41 98 EXIST. …

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Re: Interwave GUS PnP Clone Ultrasound 32 Pro / STB Soundrage 32 Pro not working :-(

Posted on 2017-01-16, 20:47

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by Predator99

in Marvin \ Sound

in Marvin \ Sound

Yes Peklop, according to Wiki you are right! No, the first Screenshot of the PnP detection is with the MED3201 installed. The STB shows nothing at this stage. I flashed the ROM from Gravis on the MED3201 long time ago to be able to use the Gravis drivers. However, its of limited use as the MED3201 …

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Re: Interwave GUS PnP Clone Ultrasound 32 Pro / STB Soundrage 32 Pro not working :-(

Posted on 2017-01-16, 15:35

by

by Predator99

in Marvin \ Sound

in Marvin \ Sound

Thank you 😀 See PM

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