Re: Retrobrite with 35% hydrogen peroxide

Posted on 2023-02-23, 06:45

by

by dominusprog

in Milliways

in Milliways

There are rumors that there is no need for any chemicals at all. It is enough to place your yellowed plastic case ... under direct sunlight. Yes, it sounds stupid, but there are evidences that sun the same time causes yellowing for new plastic cases and retrobrights already yellowed ones. The …

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Re: Retrobrite with 35% hydrogen peroxide

Posted on 2023-02-22, 04:25

by

by dominusprog

in Milliways

in Milliways

Thanks for the info, much appreciated. I'll add two part of water to make it 12% and try both regular and vapor methods.

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Re: Retrobrite with 35% hydrogen peroxide

Posted on 2023-02-20, 22:14

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by dominusprog

in Milliways

in Milliways

35% is quite strong, so you can get away with small amounts. It's hard to say how much, because it also depends on the amount of yellowing, the amount of uv light/sun and how long you want to wait for the process to complete. I mostly work with 6 or 12% and then using maybe 100ml on 1 liter? Might …

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Retrobrite with 35% hydrogen peroxide

Posted on 2023-02-20, 20:48

by

by dominusprog

in Milliways

in Milliways

Hi So what is the ratio of hydrogen peroxide to water for retrobriting the mildly yellowed plastic?

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Re: Sound only coming out of one speaker in dos 6.22

Posted on 2023-01-29, 10:12

by

by dominusprog

in Marvin \ Sound

in Marvin \ Sound

Did you check the jack itself? Clean the inside and check for broken solder joint. And if your card have onboard amp, also check for jumpers.

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Re: Analog Devices AD1821JS

Posted on 2022-11-30, 09:44

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by dominusprog

in Marvin \ Sound

in Marvin \ Sound

For Windows 9x: This page contains Win95 driver files for some AD1821 devices. Might be worth a try. However, this does not appear to contain DOS programs. For DOS volume levels : if you have no other options, you could try the DOSMIXER.EXE which is contained in the WIN31 directory of the BRAVO32P …

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Re: Analog Devices AD1821JS

Posted on 2022-11-30, 07:19

by

by dominusprog

in Marvin \ Sound

in Marvin \ Sound

Maybe - if you help us by saying which operating system you want it for... I have yet to test the card in Win95 but in dos it works as SoundBlaster but the volume is too low especially for FM synthesizer. I've find the driver for AD1816 on archive.org, is it compatible with this model? https:// …

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Re: ABit AB-PB4 (rev 1.5)

Posted on 2022-11-29, 15:35

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It looks like AMD might not have known about 80486 "belonging" to intel :) https://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/AMD_486_DX2_66_NV8T_Front.jpg/300px-AMD_486_DX2_66_NV8T_Front.jpg so about those jumpers :) Yes Am486™ is a clone of Intel 486, Am I wrong? Anyway the processor is a …

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Analog Devices AD1821JS

Posted on 2022-11-29, 09:54

by

by dominusprog

in Marvin \ Sound

in Marvin \ Sound

Hi Can someone help me find the driver for this chip? Analog Devices AD1821JS / Soundcomm ADQ30010

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Re: ABit AB-PB4 (rev 1.5)

Posted on 2022-11-29, 09:49

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

New 27 year old motherboard :) Maybe it was broken to begin with and thats why it spend its life in the box. >80486DX4 100MHz amd? intel? cyrix? there are at least 4 ways to jumper that on this board, go over jumpers with manual again, and list them here or take a picture You are a very funny …

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Re: ABit AB-PB4 (rev 1.5)

Posted on 2022-11-27, 14:48

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by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well I remove the cache chips, try an ISA graphics card and FPM RAM (2x8MiB Panasonic MN4118160SJ) but nothing changed. Any suggestion? PS. The manual mentioned that it only support 4K refresh (The AB-PB4 support ED0 (Extended Data Output) DRAM and asymmetrical DRAM (4K Refresh DRAM)). Can different …

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Re: ABit AB-PB4 (rev 1.5)

Posted on 2022-11-26, 20:19

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are exceptions to the rule. I just repaired a FIC 486-ELI-6 (VIA chipset) and as soon as a set of cache chips was inserted that had one defective chip, the board would do absolutely nothing. No POST screen, no video, nothing at all. To make things worse it did start about every 100th time …

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Re: ABit AB-PB4 (rev 1.5)

Posted on 2022-11-26, 20:17

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

TheMobRules wrote on 2022-11-26, 19:51: What kind of memory modules are you using? FPM, EDO? Also, have you tried both PCI and ISA graphics cards? Thanks for the reply. Well I think all of them are EDOs with couple of pairs. And no I'm not test with a ISA graphics card yet.

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ABit AB-PB4 (rev 1.5)

Posted on 2022-11-26, 19:39

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi So I have purchased this new motherboard, ABit AB-PB4 and installed an 80486DX4 100MHz on. I'm not sure if the CPU is in working condition or not but it starts to heat up when I turn on the power supply. Without any RAM installed motherboard beeps but if I insert the RAM and I try different …

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Re: Internal Power Supply Broken on Compaq SLT 286 :(

Posted on 2022-10-02, 11:03

by

by dominusprog

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

How do you select replacement capacitors? (For Compaq Portable 2)

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Re: AWE64 Midi Issue

Posted on 2022-10-02, 10:39

by

by dominusprog

in DOS

in DOS

HunterZ wrote on 2022-10-02, 03:15: Good to know that DOS32AWE is another option though. Yeah, kudos to the developer(s).

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Re: AWE64 Midi Issue

Posted on 2022-09-25, 19:20

by

by dominusprog

in DOS

in DOS

Protected mode software, such as all of the games you listed, will not work directly with AWEUTIL. You can use the DOS32AWE utility to correct this. Don't those games support AWE32 natively? Then they shouldn't require AWEUTIL's emulation (besides aweutil /s for initialization). Yes, but if you …

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Re: AWE64 Midi Issue

Posted on 2022-09-25, 13:19

by

by dominusprog

in DOS

in DOS

Protected mode software, such as all of the games you listed, will not work directly with AWEUTIL. You can use the DOS32AWE utility to correct this. https://www.vogons.org/viewtopic.php?f=62&t=83065 As for the soundfont files, they should be in a subdirectory named SFBANK. Then AWEUTIL will …

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AWE64 Midi Issue

Posted on 2022-09-25, 10:55

by

by dominusprog

in DOS

in DOS

Hi So I have installed the driver from CD on Win95 OSR2 and in the Windows everything works fine but in real DOS mode enabling MIDI emulation cause the system to freeze. It happened with every mode, sometimes it freezes immediately, and sometimes it plays a little bit of music then freeze. And if I …

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Re: UniVBE Brightness Issue

Posted on 2022-08-11, 20:10

by

by dominusprog

in DOS

in DOS

Hello all I have been working on a socket 7 build for the past few months. The graphic card is a Trident 3DImage 9750 and thanks to the good people at Vogons I downloaded the latest driver, and it works very well. I've tried a bunch of games on it, including Duke3D, Quake and Tomb Raider and in …

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