Are all memtest86 errors "very bad" and likely to cause crashes when using a PC?

Test 7
Error confidence value 163
Lowest to highest address 518.9MB to 601.9MB

1 bit in error.

I have 4x 512mb DDR1 installed. That makes me think it's stick 2. It's a dual channel board So I am not sure how that affects it...

Digging around in my "box of memories", I found a combination of 2x 8MB SIMM sticks that work in my otherwise picky Compaq Presario 460 all-in-one 486, so now I am running it 20MB total memory. And I identified 2x 4MB SIMM sticks that also work, as a backup. Glad I did that. As a final touch, I labelled them with labels made by my label maker labelled "label maker", what a neat x-mas present 😁

Modding/Refurbishing OG Xboxes counts too, right ?

Working on restoring motherboards. Clean them, make them working again. If needed do some upgrades as well.

Salient wrote on 2021-01-15, 15:48:

Modding/Refurbishing OG Xboxes counts too, right ?

I would say it counts since there basically just a P3 733 with a GeForce 3.

Things are starting to shape up with my mt-32 pi project. DAC and lcd added...
...however our Chinese friends managed to send me 4x20 instead of 2x20 lcd. This one is bigger and will not fit into my planned case...

Oh well. Here we go another 2-3 weeks waiting cycle added to project timelines...

Shreddoc wrote on 2021-01-14, 03:15:

RetroLizard wrote on 2021-01-13, 14:45:

I imagine some people here know more about MIDI then I do.

I'm planning on getting a MIDI device eventually, for connecting a MIDI keyboard up to my old computer, but does it matter which one I get, or will any of them work for that?

Question The First: Define "old computer", please.

A 486/586 PC

Decided to put my AST Bravo desktop back to the original P75 CPU - I had replaced the faulty motherboard with one that took a P200 MMX but with no extra graphics cards (I can't put any ISA or PCI cards in as I don't have a riser card)! it's a poor Windows gaming box (1Mb ATI Mach64) and too much for a DOS gaming machine, so back to stock P75 it goes. It is destined to be my DOS gaming machine - playing up to generally the last DOS games with its real SB16 onboard and I'll have another PC which handles Win98 gaming better (a PII or PIII).

My 21"Dell Trinitron is starting to go I think. Looks blury in the centre of the screen and there's some ghosting like artifact on some desktop items. Not sure if it can be saved (I don't have the skills at any rate).
I also broke the one of the pins on my trusty 120GB Maxtor HDD. Little sad about that, I've had it since new and still remember being amazed at just how much space I had (I could easily do a full install for Baldur's Gate I AND II!)

Duouk2000 wrote on 2021-01-16, 02:32:

My 21"Dell Trinitron is starting to go I think. Looks blury in the centre of the screen and there's some ghosting like artifact on some desktop items. Not sure if it can be saved (I don't have the skills at any rate).
I also broke the one of the pins on my trusty 120GB Maxtor HDD. Little sad about that, I've had it since new and still remember being amazed at just how much space I had (I could easily do a full install for Baldur's Gate I AND II!)

You could try taking a pin of a dead drive and soldering it. Or do what I did and just shove it in the corresponding hole on your IDE cable xD

RetroLizard wrote on 2021-01-15, 18:36:

Shreddoc wrote on 2021-01-14, 03:15:

RetroLizard wrote on 2021-01-13, 14:45:

I imagine some people here know more about MIDI then I do.

I'm planning on getting a MIDI device eventually, for connecting a MIDI keyboard up to my old computer, but does it matter which one I get, or will any of them work for that?

Question The First: Define "old computer", please.

A 486/586 PC

Good choice.

Does the PC have a sound card? Tell us what you know of it.

I have a Soundblaster 16 on standby, which I'll be using in the 486 computer.

Does compiling Super Mario 64 for PSP and playing it there natively count? I had quite a bit of trouble getting the PSP toolchain to compile and install on my laptop for the last 3 days but I finally found a (surprisingly) working guide from 2011. I only needed to add a few lines to my login scripts on my Mint install after all. The PSP port needs some more work to be stable and perform decently, but come on, the fact it plays natively on PSP is kinda impressive as is.

Other than that, nothing much, just playing games on PSP (both PSP games and emulated) and enabling homebrew on my PS3 Slim. Admittedly, I'm not that impressed with PS3 homebrew so far. If only I could get OtherOS++ or something on it, but I had already updated it to 4.87 HFW. Anyway, the PS2 impressed me more back in 2014, but I gave it away. I think I might get myself a PS2 Fat and an HDD adapter for it one of these days...

There was also that Reel-to-Reel tape deck from the 60's that I found in the attic while putting the Christmas decorations back in storage. My dad had found that thing ~25 years ago after a HEAVY rain, cleaned it, relubed it and tested it with borrowed tapes, but it had no sound, so he returned the tapes and put it in storage... It's a Sony TC-200 suitcase style with tubes and included speakers (it's also stereo). It only has belts for the counter, everything else uses idler wheels. Those things really were built to last after all. We had a blast relubing it once more and testing it. If you set it to record, it also outputs to the speakers, so at least we could test the tube amp and speakers (very handy because I don't have any open reel tapes, not yet anyway). One of them plays fine, but the other is much quieter and distorting, same thing happens if I swap them, so it's not an amplifier issue. There is also an issue with stereo separation (left plays louder on right 😮). That one could be an amp issue or a grounding problem. The counter belts and the pinch roller have kinda hardened, so I'll probably boil them. It worked on my KX-3030 cassette deck (even though I've already ordered replacements from Aliexpress), so it will probably work on this too. Well, it has to, because I doubt I'll be able to find a replacement pinch roller for a tape deck that's older than my parents. Maybe for the belts...

EDIT: Surprisingly, the service manual for the TC-200 is very easy to find, unlike the KX-3030. You would think it should be the other way around, but whatever, go figure...

Almoststew1990 wrote on 2021-01-15, 13:50:

Are all memtest86 errors "very bad" and likely to cause crashes when using a PC? […]
Show full quote

Are all memtest86 errors "very bad" and likely to cause crashes when using a PC?

Test 7
Error confidence value 163
Lowest to highest address 518.9MB to 601.9MB

1 bit in error.

I have 4x 512mb DDR1 installed. That makes me think it's stick 2. It's a dual channel board So I am not sure how that affects it...

I'd say find the bad stick and get rid of it. I mean, it might work just fine 90% of the time, but who knows what will happen.

Tried to hook up my 1977 Pong clone console to an older generation LED TV ... didn't work that well. I guess I'll have to search the storage for some older CRT style TVs.

On the bright side - convinced my daughter to play some ATARI 2600 games with me. We had a lot of fun for a couple of hours. Never underestimate the generation z...

Tried to get Microsoft Sidewinder 3D Pro to work in Dos 6.22 on sb16 gameport with no success. Next step to check if gameport is working on this card at all... but only Joystick i have is same Sidewinder.

MacGyvered the original Dallas DS12887 chip for my Pentium Pro 200 build since the original in the chip was flat as a pancake.

The next items on my list:
1) repair the 5.25" floppy drive
2) install Windows 95C and all drivers
3) install another CD-ROM drive for a game or two

ODwilly wrote on 2021-01-16, 03:28:

Duouk2000 wrote on 2021-01-16, 02:32:

My 21"Dell Trinitron is starting to go I think. Looks blury in the centre of the screen and there's some ghosting like artifact on some desktop items. Not sure if it can be saved (I don't have the skills at any rate).
I also broke the one of the pins on my trusty 120GB Maxtor HDD. Little sad about that, I've had it since new and still remember being amazed at just how much space I had (I could easily do a full install for Baldur's Gate I AND II!)

You could try taking a pin of a dead drive and soldering it. Or do what I did and just shove it in the corresponding hole on your IDE cable xD

I gave this a try but no dice haha. Ah well, I've reinstalled 98SE on an SSD.

On the plus side my monitor is actually fine, I'm just using a garbage KVM.

In December I bought an Asus P4T-E i850 Socket 478 rdram motherboard from the UK for £10 + £12 shipping. With all the Corona and Brexit releted stuff going on the shipping took longer than usual but I finally got the board 10 days ago.

The board diddn't come with a chipset heatsink and one of the chipset heatsink mounting holds were broken, thats why the price was low.

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The Asus P4T-E i850 s478 motherboard.

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The new hold for the chipset heatsink.

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The chipset heatsink from my scrapbox diddn't fit perfectly so I had to bend the mouting clips somwhat.

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I did a few testruns with some CPUs and memory I needed to test anyhow. P4 3066 and the recently fixed GF4 ti4600 in 3dmark2001.

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I managed to get some Samsung PC800 45ns ECC sticks to run at PC1200 speed. 4000+ mb/s memory speed is not bad for a motherboard from year 2001 using a chipset from year 2000.

That is a great deal for that board. And you built a nice system around it as well.