Re: Replacing the Dallas 12B887

Posted on 2018-07-27, 19:06

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tried another one, and do reach metal between the three pins, but between three, and the two pins, there is nothing. I went a bit deeper than on where I found metal, and still nothing. Pictures I took didn't show how far I went, as quality isn't good enough. Will look into the PCB, and if cost not …

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Re: Replacing the Dallas 12B887

Posted on 2018-07-27, 11:33

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have looked at guides, and what I tried to point out, the 12887 and 12B/C887 have not the same layout. Had a hard time getting good picture, but look at the new one I tried to mod. Filename IMG_20180727_132104239_LL.jpg File size 258.48 KiB Views 615 views There is nothing at the "missing" pins. …

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Replacing the Dallas 12B887

Posted on 2018-07-26, 20:03

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some time ago I posted about my 486 SBC I am going to use in my Amiga 2000 to save space. Did manage to get it running, and fix the fuse issue, that made the keyboard/mouse not work. It now works apart from getting battery errors every time I boot, and also have to make changes in bios every time …

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Re: SBC 486 DX4-100

Posted on 2018-04-04, 16:15

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Used a 2A fuse, as I couldn't find a 3A one, and when I turned it on, keyboard is working. So it was that fuse that had blown. Ordered some new ones from China, so it will take a while before I get them. Only oddity is that keyboard is not working when using ps/2 splitter, but optical mouse will lit …

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Re: SBC 486 DX4-100

Posted on 2018-04-02, 14:05

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Searched around a bit again today, and in addition to desolder the flat Dallas battery, I might have found an incling of what the problem could. I did continuety measuring that looked to me like a resistor excpet being green and lacking stripes. Turns out it is a LF3A fuse, and when still conected I …

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Re: SBC 486 DX4-100

Posted on 2018-03-25, 17:51

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The VGA output doen't really matter, as I have another ISA card that do work, but likley you are correct about the LCD/VGA bit. As manual is not to be found anywhere it probably will stay that way. Looked around the PS/2 connector, and try to reflow most of them. Nothing that is obviously broken, …

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Re: SBC 486 DX4-100

Posted on 2018-03-25, 10:12

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Took a bit of time, but did get the PS/2 splitter cabel, but both keyboard and mouse are not detected. No lights or anything. I have tested these on a different PC, and they work there. Also tested different keyboard but no result. Played around with different jumper settings, and even if I have …

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Re: SBC 486 DX4-100

Posted on 2018-02-24, 19:53

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Had a bit of success with this card.Cut off a little bit of the PCB where the ram slots are, and after plugging it in my Amiga 2000 I got a beep, and monitor turns on, but no picture is shown. Only black screen. I needed to put the single ram stick I have been using, into the second(closes to the …

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Re: SBC 486 DX4-100

Posted on 2018-02-23, 21:02

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here are the last picture. Should have gotten pictures of the entire card.

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Re: SBC 486 DX4-100

Posted on 2018-02-23, 21:01

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here are some pictures of the card. Tried searching for manual, but only ones where AT connector is placed diffrently, and most of the jumpers as well.

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SBC 486 DX4-100

Posted on 2018-02-22, 19:39

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In addition to 2 retro systems I wanted to add a 486 dos machine. As desk space is at a premium(I have waaaay to much stuff :happy: ), I went out and looked out for a Single computer board, as I have an Amiga 2000 that has passive ISA slots I can use it on. SBCs are generally ludicrous expensive, …

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Re: Biostar m5ala motherboard

Posted on 2018-02-03, 14:42

by

by Viserion

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You have been lucky with yours. A few months back I had a real hard time making one with a 166MHz and a 200MHz CPU to work. Both where MMX versions of the CPUs. After several days of frustration, I connected a pc speaker to it, and the beep code I got suggested ram problems, or so I think it was. …

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Re: Awe64 Gold with SimmConn

Posted on 2017-11-12, 10:37

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Needs win9x to load soundfonts, what a bummer, think I put the Audican with a dreamblaster in the dos machine, and the AWE64 Gold in the Win98 machine.

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Re: Awe64 Gold with SimmConn

Posted on 2017-11-11, 19:54

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Solved it, reinstalled drivers from the CD, looks like not everything was installed last time, and that was the problem. renamed config sys to config.old, and copied what was there to fdconfig.sys . Now the only thing is if there is anything to optimize this, as Tiefighter complains about too little …

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Re: Awe64 Gold with SimmConn

Posted on 2017-11-11, 18:27

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

dreamblaster wrote: is this the original simmconn gold ? No, it's the one I got from you. Have the same problem whitout the SimmConn, so lilkey not to have anything to do with this problem.

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Awe64 Gold with SimmConn

Posted on 2017-11-11, 13:46

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Have a bit off an off problem with the AWE 64 Gold I have. I'm using it with a 200MHz Pentium MMX, and with Freedos 1.2. Burned a CD with drivers from this site, and installed those. Spent quite some time on this, so won't bore with all details, but as it is now I have the following issue. On all …

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Re: Simmconn AWE64 Adapter

Posted on 2017-11-04, 15:43

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Have PMes dreamblaster for interest in 2, 1 soldered, and one as kit.

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Re: Awe32 problems

Posted on 2017-10-08, 19:19

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Sent the card back, and seller bent som pins back, and sent the same card back. Not sure which pins however. Tested it, and there is still problems with it. In Win2k it was horrible broken as it was stuttering so bad that whatever was played was unrecognizeable. It would BSOD after a short while. I …

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Re: Awe32 problems

Posted on 2017-09-07, 21:36

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

I ordered a CPU(P200MMX) that arrived today to test this card on a second system. Could not get the CPU to work on either the second or first system, though the first system does boot when reinstalling the K6-2+. Second MB(M5ALA) is not a super socket 7, so doesa not support K6-2+ CPU. Seller of the …

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Re: Awe32 problems

Posted on 2017-08-29, 21:21

by

by Viserion

in Marvin \ Sound

in Marvin \ Sound

Tried a lot of different things, and nearly changed or took outalmost all of the hardware to see if there was a conflict, with no results. This was in dos however. Tried to run diagnose or install, but either go a flat out not detected, or failed the I/O detection. Tried 220h, 240h, 260h and 280h …

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