Re: Bought these (retro) hardware today

Posted on 2020-05-02, 11:46

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Found this box I had completely forgoten and you know like everybody else recently with time to kill at home. So apart for a few items the rest is crap but I would like to hear your opinios what worth keeping , which one to use for DOS gaming with ISA sound cards etc.. Not sure about this one looks …

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Re: PCChips m919 cache stick not working

Posted on 2020-05-02, 10:42

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Compressed air in the coast socket first. Sounds like there may be dust/paper/other crud in there. Use a magnifying glass to check for any defects on the contacts in the socket.

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Re: Gateway 2000 4DX-33 (also hi)

Posted on 2020-05-02, 10:36

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, there's always the possibility of bad hardware. If the floppy light stays on, the cable is on backwards btw. Can be at the floppy end or on the motherboard.

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Re: A new covid lockdown project - help if you can

Posted on 2020-05-02, 10:18

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have found a few bits and tricks to try and find out what is going on. https://www.experts-exchange.com/questions/10 … -installed.html You may not need to restore the complete default settings, just set a few in the right way.

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Re: Help in finding drivers/documentation of old ISA network card

Posted on 2020-05-01, 20:52

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It definitely is! The card is probably made in 1991. Some of the chips and the oscillator have a production date in 1992.

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Re: Custom BIOS Splash Screen Graphics

Posted on 2020-05-01, 20:49

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anything with an Award bios has this option. Some Phoenix bioses too. Even some AMI bioses on Intel boards had this option.

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Re: Help identifing capacitor on an old IBM clone PSU

Posted on 2020-05-01, 20:48

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

From what cable is it coming? That would give you an idea of the working voltage. There is absolutely nothing readable in there any more?

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Re: Problems with QDI v4p895p3/smt V5.0

Posted on 2020-05-01, 20:39

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

TIP31C is a general purpose transistor, not a voltage regulator. We indeed need a detail picture around that area to see what circuit they are using. https://www.st.com/resource/en/datasheet/tip31c.pdf

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Re: Socket 4 Micronics M5PE two IC´s missing,

Posted on 2020-05-01, 20:35

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This has the top one filled: http://home.att.ne.jp/alpha/pcboard/0282NN.jpg I don't have a better resolution picture.

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Re: "Corrupted" files on USB flash drive under MS-Dos

Posted on 2020-05-01, 20:29

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did watch the video. Are you loading the aspi driver with the correct parameters? http://hddguru.com/software/2006.02.09-USBASP … -MS-DOS-Driver/

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Re: Help identify this 486 ISa socket3 motherboard

Posted on 2020-05-01, 20:18

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The memory sockets look a bit odd because you can use the same PCB for 4 x 30pin + 2 x 72pin as well as 8 x 30pin I haven't seen this anywhere. I am very curious what board this is. If you cannot salvage it due to damaged traces, at least try and read out the bios chip for an ID.

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Re: A new covid lockdown project - help if you can

Posted on 2020-04-30, 20:04

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The 80C287-12 would not run stable at 20 MHz. Running a chip at alomst twice the speed it is specced for will do that. The 12 stands for 12MHz...

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Re: Gateway 2000 4DX-33 (also hi)

Posted on 2020-04-30, 19:54

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If that is a Phoenix bios: http://yusoft.kulichki.com/doc/phoenix4.pdf 135 = 0x87h Configure devices 130=0x82h Detect external RS232 serial ports IMG'd a floppy... with something from bootdisk.com or similar? Do you have any other way to read that floppy elsewhere and does it have a command.com etc …

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Re: asus TX97-XE issue

Posted on 2020-04-29, 18:08

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thankyou for your reply. Is it true I can put the bios in a NIC with a socket and do it that way? If the chip is the same size and organization it might. I don't have information on that however. The other board methode seems safer generally speaking because you can use the bios flash utility …

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Re: Problems with QDI v4p895p3/smt V5.0

Posted on 2020-04-29, 18:05

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Umm I didn't notice before but are you sure the bios chip is socketed properly? Looks a bit odd, those open spaces.

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Re: Desperately need for Motherboard Soyo 6BB BIOS

Posted on 2020-04-29, 18:04

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, that patched bios most likely originates from wimsbios.com I am one of the forum moderators in there and I do patch bioses with a tool from one of the other moderators. I know there's another tool that can also patch in support for higher multipliers and sometimes newer CPU cores, that one is …

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Re: Help identify a old epson 486

Posted on 2020-04-28, 20:02

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

is that an actionPC 1500 perhaps? https://files.support.epson.com/pdf/apc15_/apc15_u1.pdf https://files.support.epson.com/pdf/apc15_/apc15_pg.pdf

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Re: asus TX97-XE issue

Posted on 2020-04-28, 19:52

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe a bios problem. Do you have another motherboard with a similar bios socket that you can do a hotflash procedure with? https://www.overclockers.com/forums/showthread.php/314300-Step-by-Step-Tutorial-on-HotFlashing-a-Corrupted-Non-Working-BIOS-Chip Oh and that new battery was actually new from …

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Re: Problems with QDI v4p895p3/smt V5.0

Posted on 2020-04-28, 19:45

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Start with replacing the CMOS battery by a brand new one from the blister. If the voltage in-circuit is low the board will not boot. All the other components that you are using are known good? Does it beep if you leave the video card out? Does it beep if you leave the memory out? Does it beeps if …

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Re: Jumper Setting 8-Bit I/O Controller

Posted on 2020-04-28, 19:40

by

by evasive

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does it have ANY markings at all on the backside that may be a type number? Without that, educated guesswork starts here: The ASYNC1/ASYNC2 connectors top left are the serial ports, the PTR is the second printer port. The four row jumper blocks low right (with 3,4,5,7,9 below) are for selecting the …

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