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Re: 286 Motherboard does not work . CMOS inoperational. System halted.

Posted on 2024-02-13, 20:23

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've heard a few times that such boards require a CMOS battery to complete the POST sequence. I ended up using a new rechargeable pack from a cordless phone. As they're still available new. And mounted it away from the motherboard to try and avoid any leakage (likely will replace after 5 years …

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-13, 09:25

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good progress has been made! I decided to remove the keyboard plug, and two controller IC's and re check my work. Also took some nice high res photos of the damage, so I could zoom in. ( I don't own a microscope) My desk looked like a bomb site https://i.ibb.co/N9PQsVc/20240213-215617.jpg https://i. …

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-12, 21:34

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

it looks like there are still weak tracks on the pictures. You fixed thick power ones, what about those very thin? Indeed there are some thin ones. I ended up scraping some of the corrosion away to the copper. Then put some fresh tin over it. Anything that was beyond repair was done with bridge …

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-12, 04:30

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

8042's can be programmed for either XT or AT KBC, have never seen a 286 with XT required keyboard yet but suppose it is possible. DId you pull the KBC out and check for corrosion near the old battery location ? It is possible that some via's or bottom of socket has corrosion.... I do have an XT …

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-12, 01:55

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nexxen wrote on 2024-02-12, 01:34: Could you post a pic of the board? Yes, sure can. I have attached them bellow. The traces near the keyboard socket have been bypassed/repaired on the underside of the motherboard.

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-12, 00:49

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also a screenshot of the error I'm getting on POST.

Re: 286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-11, 23:38

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As a side note, I will dig out a AT/XT Keyboard from storage with a switch on the bottom. As I was using a XT to PS2 adapter, I'm wondering if the following is related to my errors, https://www.win.tue.nl/~aeb/linux/kbd/A20.html

286 - DTK PTM-1010 v2 Keyboard controller

Posted on 2024-02-11, 23:08

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey everyone, I'm hoping someone might have some pointers for 286 keyboard controllers. I've got a DTK PTM-1010 v2, 286 Motherboard I saved from the recycling center. https://theretroweb.com/motherboards/s/dtk-ptm-1010v2-edit.-1.01 Like most of these motherboards, the battery had leaked and cut some …

Re: Installing OS/2 Warp 4 From Hard Drive

Posted on 2022-08-21, 23:17

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can install OS/2 from a partition/directory on the hard drive. You'll need to modify the CONFIG.SYS file on the second boot floppy ("Disk 1") to point to the location of the installation files on the hard drive. Here's a link to some specific instructions: https://groups.google.com/g/comp.os. …

Re: Installing OS/2 Warp 4 From Hard Drive

Posted on 2022-08-21, 03:41

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, Remembering from the old time with OS/2 Warp 3 on a PS/1 with a TEAC CD-55A CD-ROM drive using a Mitsumi interface if I'm correct. The CD-ROM drive needed a driver for it to work in Windows NT 4.0 and OS/2. For OS/2 I made a copy of the install floppies and added the needed driver taken from a …

Re: Installing OS/2 Warp 4 From Hard Drive

Posted on 2022-08-21, 01:56

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Don't know how OS/2 is hardware dependent... but you can install it on a similar PC and just do a clone on the laptop. It might work. Good idea, I didn't think to try that. Only pain with this model of ThinkPad, is you have to dissemble most of the laptop to get at the drive. But might give that a …

Installing OS/2 Warp 4 From Hard Drive

Posted on 2022-08-20, 07:14

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey everyone, I've had a bit of a look around and haven't found many methods. But has anyone managed to successfully install OS/2 Warp 4, via copying the source CD-ROM files to the Hard Disk? I.e Like copying the Win98/95 directory from the 9x CD-ROM. I have a ThinkPad 560. But it has no built in …

Re: post up pics of your "computing area"

Posted on 2021-07-30, 04:09

by lackofpatience

in Marvin \ System Specs

in Marvin \ System Specs

Dimitris1980 wrote on 2021-07-29, 18:38: My playroom Is that a Mac LC3?

Re: CPU Voltages, AMD K6 and playing it safe

Posted on 2021-07-28, 01:34

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

quicknick wrote on 2021-07-28, 00:00: If your board is the Biostar MB-8500TTD you're in luck: mb-8500ttd manual needed Ahh yes! I did find that after doing some more googling, I will give it a try and see what happens haha

CPU Voltages, AMD K6 and playing it safe

Posted on 2021-07-27, 09:37

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a question about CPU Voltages. usually I can figure it out but not sure on this one. I've got the following AMD K6 socket 7 CPU (not a K6-2). It shows the following voltages on the chip. When checking the CPU world link it shows many voltages at the bottom of the page. But looking at my …

Re: New DreamBlaster S2 !

Posted on 2021-07-01, 07:19

by lackofpatience

in Marvin \ Sound

in Marvin \ Sound

Just had to stop and say I've had this thing in my main DOS gaming machine for just over a month, it's amazing! Enough said haha. It really does give you such good access to better MIDI sound without having to track down the expensive MT32 equipment

Re: post up pics of your "computing area"

Posted on 2021-05-22, 07:30

by lackofpatience

in Marvin \ System Specs

in Marvin \ System Specs

thegenerallee86 wrote on 2021-05-17, 19:58: Here are some photo's of Mine with More coming I dig that IBM Desktop in the first photo. So many of those at school and really solid machines! Every time I see one it reminds me how slow it was playing 3D games, but how I was so fond of them.

Re: AGP cards for Windows 98 gaming - help!

Posted on 2021-04-23, 05:25

by lackofpatience

in Marvin \ Video

in Marvin \ Video

Played both GTA3 and VC on my P2 400 GF2MX running Win9x GTA3 was playable, not smooth but you learnt to deal with the lag VC was really pushing it but I was young and thats all I had Nostalgia hasn't hit me hard enough to want to go and relive that setup yet Sorry, slow reply haha That would have …

Re: Serial Mouse woes

Posted on 2020-12-20, 06:31

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Project is wrapped up on this one. Thank you everyone for your help. So, did you come to a particular conclusion? Was it just a matter of having the voltage on pin 3 instead of pin 5? Sadly I never got a chance to test the theory, as I found my PS2 header was wired wrong. So I never got a chance to …

Re: Serial Mouse woes

Posted on 2020-12-20, 02:53

by lackofpatience

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey guys, Project is wrapped up on this one. Thank you everyone for your help. I shot a video of the machine as well, 2 parts. https://www.youtube.com/watch?v=RODQwt4VoDc Cheers 😀

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