bjwil1991 wrote:

That's amazing picture quality for a high-end CRT. Is that from the early 2000's? I have a Medion MD 1998 OF 19" CRT from the late 1990's early 2000's that can output 1600x1200 at 120Hz maximum.

I think we already had this discussion... it's not possible even for the high end monitors.

The problem with rate and resolution on CRTs is that the higher each goes, the blurrier the picture.
Unlikely also because the P260 has vertical max- frequency of 121khz and 1200lines at 120hz need a 144khz capable screen. There's also some overhead needed so it would be even higher than 144khz.

Puh...as I saw this offer I was unsure if I should buy this pile for 130€ shipped as the photos were rather bad:

It arrived today in a big box. It was further damaged during transport and the boards already came out of it at the bottom 😵

But...what I got is incredible. Several XT boards - some of them IBM - 286, 486 and many IBM ISA cards. Then several up to date ASUS boards with CPU+RAM which I belive to be much faster than my current main PC. However, all in bad condition with soil on it but I think almost the XT-486 stuff should be fixable.

Maybe will post detail photos the next days...

No ESD or bubble wrap around the boards?

No nothing. Scrap lot as described. Would like to know if the seller had the complete PCs...if yes, he wasted lots of money.

A few cpus came today... including:

So most intersting for me:

Chips 80286:

Schneider EURO PC XT

JUKO ST XT

Chips 80286

IBM XT

Also IBM XT?

80486...what kind of connector is this above the memory slots? Never seen...

And the ISA cards:
MDA/CGA?

MFM and CGA with Cinch:

Octek Trident VGA and some kind of IO card:

CGA and a EMS card? 3rd one for me, hopefully I get it running this time...

MDA or CGA, MFM and VGA

now thats what i call retro

That second Chips 80286 has some screwed-up memory chips. That board has taken some serious physical abuse.

And, the "Also IBM XT?" is in fact a IBM PC motherboard.

Predator99 wrote:

80486...what kind of connector is this above the memory slots? Never seen...

IMG_9861-r.jpg

It may be used to connect various types of riser boards and in some cases additional system boards. Does it say anything on the back of the board? Also interesting it includes a soldered 486DX and also has an upgrade socket...

Edit: Ah, maybe the socket is to add an additional processor board, and the system was an industrial one with one or more processors (which would explain the additional socket)?

stamasd wrote:

That second Chips 80286 has some screwed-up memory chips. That board has taken some serious physical abuse.

And, the "Also IBM XT?" is in fact a IBM PC motherboard.

You are right...its the Original 1981 PC board!!! Was only a quick&dirty asigment by me without google...

Contacted the seller gain yesterday. He has another lot with interesting boards. He told me that he got everything from a e-waste bin. I asked him if also the cases were in it but no reply yet...

Yes I am aware everything is damaged and quite dirty. Will clean and fix before testing it. But not much time at the moment.

yawetaG wrote:

Predator99 wrote:

80486...what kind of connector is this above the memory slots? Never seen...

IMG_9861-r.jpg

It may be used to connect various types of riser boards and in some cases additional system boards. Does it say anything on the back of the board? Also interesting it includes a soldered 486DX and also has an upgrade socket...

Edit: Ah, maybe the socket is to add an additional processor board, and the system was an industrial one with one or more processors (which would explain the additional socket)?

Oh interesting. Will take a look if I find a suitable card in the pile. The 486 is on a socket. Board is labeled "486-33.256kBC..ISA.MITAC.ABC m433c22" and "A4865/A4866-XX V2.1 COMP".

Octek Trident VGA and some kind of IO card:

That I/O card is the original IBM 5150 floppy controller.

argh...this means the seller most probably had the complete PCs and disassembled them 😵

Hopefully he can also get the cases. But if yes, would be rather difficult to ship to me and I am running out of space...

Got some more goodies for my Matrox Mystique today. 😀

Predator99 wrote:

Chips 80286
2nd one

That's cool, I have near enough the same motherboard with just a few differences such as the colour, jumper pins over by the battery & a row of resistors instead of those orange coloured chips for example. The CPU in mine is an Intel 286 10MHz overclocked to 12MHz and it has 1MB RAM.

yawetaG wrote:

Predator99 wrote:

80486...what kind of connector is this above the memory slots? Never seen...

IMG_9861-r.jpg

It may be used to connect various types of riser boards and in some cases additional system boards. Does it say anything on the back of the board? Also interesting it includes a soldered 486DX and also has an upgrade socket...

Edit: Ah, maybe the socket is to add an additional processor board, and the system was an industrial one with one or more processors (which would explain the additional socket)?

I don't think the 486DX is soldered. If you look closely you can see a tiny bit of a socket underneath it. And the extra socket is for a Weitek 4167 coprocessor (PGA142).

That extra slot's connector looks suspiciously like the one used on Mac IIs for the NuBus expansions. Of course that doesn't mean the board has NuBus, but these connectors were commodity hardware during that time.

(edit) there are also a lot of damaged capacitors on that 486 board, especially near the coprocessor socket. I would replace them before trying to power up that board.

stamasd wrote:

yawetaG wrote:

Predator99 wrote:

80486...what kind of connector is this above the memory slots? Never seen...

IMG_9861-r.jpg

It may be used to connect various types of riser boards and in some cases additional system boards. Does it say anything on the back of the board? Also interesting it includes a soldered 486DX and also has an upgrade socket...

Edit: Ah, maybe the socket is to add an additional processor board, and the system was an industrial one with one or more processors (which would explain the additional socket)?

I don't think the 486DX is soldered. If you look closely you can see a tiny bit of a socket underneath it. And the extra socket is for a Weitek 4167 coprocessor (PGA142).

I was just guessing, TBH. The only other place I've seen the kind of connector that's above the memory slots is on certain Japanese systems where the motherboard is basically build out of modules that can be swapped for different configurations.

What would be the use for a co-processor on a system that already uses a DX processor?