Re: CompactFlash Trouble in 286 Land

Posted on 2018-02-13, 02:13

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have similar problems on my 386SX (1989) - There's no definitive pattern, but I do get it hanging up sometimes. Works like a charm in my 486DLC, 486DX2/66, P166, and "works a bit" on my Dell PPRO 200. I've yet to try it on my 286 because keyboard failure (traces blew). I'm heavily interested in …

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Re: Where's the CMOS Battery?

Posted on 2018-02-12, 20:32

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I’ve modded one of these without removing it from the motherboard and it’s was fiddly but possible: http://www.vogons.org/viewtopic.php?t=36939 I wouldn’t do it again though - as suggested by Jed118 I use wick now for desoldering. Just practice on something else for 15 mins first. And yes these …

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Re: Where's the CMOS Battery?

Posted on 2018-02-12, 17:00

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Based on what I'm seeing so far, it looks like the easiest way to do this is just remove the MB from the case and dremel it in-place. Probably the most dangerous way to do it but then again it could also be dangerous to try to remove the chip from the board if you don't know how to do it properly …

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Re: 486 DX-33 question

Posted on 2018-02-11, 22:16

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Actually, I've been wanting to put a heatsink on my 486DLC (which has a 386 footprint) as it does get pretty hot sometimes. Were there ever heatsinks made specifically for the 386, or do I have to make one/salvage one off something else? Also, the $30 486DX2/66 I had initially bought for parts did …

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Re: What retro activity did you get up to today?

Posted on 2018-02-11, 20:13

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^^^^ 403 mate! wait, that seagate barracuda doesn't work? :( It spins up and can be seen by the BIOS. I've tried it in DOS and with an AHA 294x adapter in a modern machine under Ubuntu: It can see the LUN, but not any media attached to it. I credit its death due to a lot of quick on/off cycling when …

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Re: Where's the CMOS Battery?

Posted on 2018-02-11, 14:53

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

derSammler wrote: Second that. Did the same on my Intel NX mainboard. […] Show full quote Second that. Did the same on my Intel NX mainboard. That's quite neat.

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Re: Post pics of your CRT monitors

Posted on 2018-02-11, 14:50

by

by Jed118

in Marvin \ System Specs

in Marvin \ System Specs

Wait a minute - Is that really a dual floppy or just a blank!? What is that thing anyways, looks like a bulky (yet intriguing) Mac Classic.

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Re: What retro activity did you get up to today?

Posted on 2018-02-11, 07:15

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

All end of life: I'm most disappointed at the loss of third from the left (ISA card) and directly below it. Those two helped the aging 386 platform through the early-mid 00s.

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Re: What retro activity did you get up to today?

Posted on 2018-02-11, 06:53

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

creepingnet wrote: Today was spent formatting, DDO-ing, and setting up the drives for both systems. Replace with *all* and you're me 😉

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Re: Post pics of your CRT monitors

Posted on 2018-02-11, 06:48

by

by Jed118

in Marvin \ System Specs

in Marvin \ System Specs

First commercial 486 to have 2x 1.44Mb

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Re: Post pics of your CRT monitors

Posted on 2018-02-10, 19:33

by

by Jed118

in Marvin \ System Specs

in Marvin \ System Specs

1992's TTX XGA (I got it to 1280x1024) - Not sure of the dot pitch but it is kinda blurry and changing the resolution bounces the image around. I've relegated it to my 286 (which really needs an EGA) https://i.imgur.com/yyi2k8nl.jpg This Samsung Syncmaster 3Ne for my 486 DX2/66 - Very clear and …

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Re: What retro activity did you get up to today?

Posted on 2018-02-10, 19:21

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

After extensive (3hs) worth of troubleshooting and replacing EVERYTHING on the motherboard, then the motherboard itself, I was able to finally access the contents of the Syquest 88Mb disks I got for $2 - Both report no bad sectors and are full of Star Trek fan fiction and other goodies. I would …

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Re: M321 BIOS HD limitation question

Posted on 2018-02-09, 12:25

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Blast... I suppose I could try to find a BIOS update... Thanks for the read, it jogged my memory of these issues, which I haven't encountered in 10+ years 😉

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Re: Where's the CMOS Battery?

Posted on 2018-02-09, 05:13

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There's a whole CMOS chip in there. Same DIP package as an IBM PS2 model. Good luck getting the right one ;) Not sure why this was done, it makes as much sense as having a car's ECU harness facing the front of the car underhood, in line with the hood gap, right where the road salt and water can hit …

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Re: Zip Disk Drive trouble installing drivers

Posted on 2018-02-09, 04:52

by

by Jed118

in Marvin \ Software

in Marvin \ Software

If you want, I can dropbox you the files off the original CDROM I've used to get each and every one of my ZIP disks to work. I know it will work in 95 and 98. Let me know in a PM and I'll send you a link. *Edit I just used it on a 486DLC with SCSI on it.

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M321 BIOS HD limitation question

Posted on 2018-02-09, 04:38

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK so I've got my 486DLC running ("running") again and I am preparing for my SCSI2SD to arrive. In the meantime, I'm playing around with a Seagate ST5850A that's in there now and while I can see the BIOS recognizes the drive as an 815Mb drive, DOS simply won't do it. I have purchased a 512 Mb CF …

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Re: Where's the CMOS Battery?

Posted on 2018-02-09, 04:14

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That thing labelled DALLAS - That's where the battery is. You'll have to drill it out and replace it. First Google search I saw: https://www.youtube.com/watch?v=NdlSfqto_0o I've done this three times - Once I got lucky and the chip had a plastic cap on it. https://i.imgur.com/AVX3Wtmh.jpg I still …

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Re: What retro activity did you get up to today?

Posted on 2018-02-08, 03:03

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

DaveJustDave wrote: made me an adlib! https://www.youtube.com/watch?v=vVdZTNWG4Y0 I am super interested. How can I get my hands on the PCB? Everything else I can likely source with relative ease.

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Re: What retro activity did you get up to today?

Posted on 2018-02-08, 02:46

by

by Jed118

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I got the 1024k Sram chips today. Intending to drop them into my IBM eduquest 55. http://i.imgur.com/Xb68Yttm.jpg Yea, I completely forget to even CHECK if the eduquest will take 32 pin srams. SPOILER ALERT: It doesn't Icing on the cake, I have 2 other 496 boards that I know can fit 32-pin srams …

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Re: Zip Disk Drive trouble installing drivers

Posted on 2018-02-07, 05:06

by

by Jed118

in Marvin \ Software

in Marvin \ Software

I find these drives are pretty resilient - Indeed I've had about 10 go through my hands recently (two external LPT, one external USB, one SCSI internal, and the rest were IDE internal) and only one was broken internally - there's a solenoid/transformer release in there, and it actually melted the …

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