EBAY: SBC 486 50MHz (not mine)

[Iggy]

I'd like to run OS/2 Warp on one of these things.

Hey Nicholas,
Haven't seen you around lately.

Great Vonnegut quote.


I'd had that thought before in relation to a '386 or '486 bridgeboard, but Warp really requires a VGA card (at least version 3 does).
You can also run Win3.1 under later versions of Warp.

Use of an ISA VGA card is possible, but then you are dealing with two separate displays.

Has anyone tried to use a Sigma Designs ReelMagic card in an ISA slot with a bridgeboard or sbc?

Under Warp that should allow Mpeg decoding at 640x480 in 256 colors.

[Iggy]

Would be cool if one of those Pentium Overdrive chips that fit in a 486 socket would work on one of these as $50 is very cheap.

There is a similar board with a Pentium 100 and onboard SCSI for sale on eBay for £99.

I used to have two of those overdrive chips.
Curious hybrid between '486 and Pentium.
Smaller then a Socket 7 processor.

Wound up throwing them away when I inadvertently bent the pins.

[Iggy]

Does anyone know where I can get the connectors to convert my two 8 bit slots to 16 bit?

[Iggy]

That could be true for mediator but old micronik busboard had PCI slots not accesible for the Amiga so i assume that it is only for SBC boards

I wasn't aware of that.
Why did they bother?
If they weren't accessible the majority of users wouldn't have a use for them.

And while this whole discussion is interesting, in practice these ideas aren't too practical.
Basically what you have is two separate computers in one case.

But then face it, we don't always do things because they make good sense.
Sometime we do it just because we can (the neato factor).

[Iggy]

I just desoldered them from old dumped PC-boards and soldered them into the empty slotsholes on the A2000. (Some A2000 have to be cleaned from solder in the holes before you can stick the missing slotconnector into the holes. AND never drill the holes with a dremel etc., you will damage the board.)

Markus

Yep, I'm going to have to use a desoldering bulb on the holes, but I was hoping for something less painful then removing the slots from an old board.

I've only found one SBC that doesn't require a separate power connection.

[Iggy]

Now that you mention it, I remember doing the same thing with the DRAM It's funny that you mention having a K6-II because I ended up getting the K6-III.

Loved that series.
I had about a half dozen K6-III+ at one point.
All would clock at at least 550MHz.
And one I got over 600.

Funny, I didn't have as much luck with the K6-2+.
Probably because these were just harvested K6-III+ chips with half the cache disabled.

Problem was, if you benched a K6-III+ and a lowly AMD Duron at the same speed, the Duron wiped the floor with the K6.

Come to think of it, I always did get a kick out of using chips that were not intended for desktop use in desktop motherboards.
My last Athlon XP was an XP-M 3000+. Easily good for 2.4 Ghz, pushing it 2.5.


Sorry, way off topic.

[Iggy]

if you got a Core one, you could run WinUAE which would really freshen up that A2000

Now that is a demented idea.
At that point, why keep the Amiga motherboard?
Besides, most high end SBCs require an ATX power supply.

[Iggy]

mine was 400 and was under the impression that they were not very overclockable, so I never tried.

It was pretty fast though. I had a Pentium 450mhz at work an I do recall DVD playback being smoother on the K6... Most of the 4D games were slightly slower, but still a nice CPU.

Seems to me that I upgraded from a 166mmx that I ran at 200mhz and was able to keep the same MB. DVDs were a slideshow at 200mhz all I really wanted to do was play DVDs which were the new hot thing without springing for a new MB, RAM, etc...

I guess the benefit to using the ISA CPU board is that you could keep the Amiga intact and even run deinterlaced it in a window if you used a USB capture card and something like AmigaManiac's svideo adapter.

Interesting idea, except I'd use something with more bandwidth then a USB port.

BTW - The original K6-IIIs were horrible overclockers.
The + components were part of the final die shrink. Eventually they only saw use in mobile devices.
The cool part was that for the first time the K6-2+ got a cache (half that of the K6-III, but still an enhancement).
I would have kept them, but long after they were irrelevant, the Germans (big AMD fanatics) were paying big bucks for one.
And you usually needed an updated bios for the K6-2+ (I guess the cache freaked out older bios'). Oddly enough, the K6-III+ was usually just a plug in.
Another cool thing, the 6X multiplier AMD substituted for the 2X.
With that, older 66 and 75MHz bus machines could do 400 to 450 MHz (on hardware that before was limited to a lot less)

[Iggy]

"micronik busboard"

http://www.amiga-hardware.com/showhardware.cgi?HARDID=1389

hmm...interesting Fran.
Never really paid attention to that one.
I assume the PCI slots were all connected and that so were the ISA slots.

How did this connect to an A4000 motherboard?

And if its not connected, what do you do with it.

Anyone got a manual for one of these?