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Is it amazing that a 25 year old computer still works?


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#51 OLD CS1 OFFLINE  

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Posted Mon Mar 18, 2019 10:53 AM

I think it highly unlikely Windows 10 will support anything that old without serious jiggering.  I am not familiar enough with x86 to know if it supports trapping bad instructions for emulation in a library.  As I understand, Windows 10 relies upon instructions and registers which are not available in anything over a certain age.  As it and processor technology ages I suspect it will be optimized for certain characteristics which are introduced along the way, even if it can only go back so far.



#52 Osgeld ONLINE  

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Posted Mon Mar 18, 2019 12:42 PM

 

Well wtf? I've seen individuals short, then force more current through them, then explode as expected. But for 26 to go bad in one shot? Why'd that happen?

 

Did someone reverse the polarity or overvoltage a supply rail or something, weaken them, let them sit, then power on = poof?

 

have no clue of the history of the board, AFAIK it was sitting in a plastic tub out in someone's garage for 2 decades, then I go and plug a 400 watt ATX supply (with an AT adapter) in and fireworks

 

to be fair I got the entire tub and everything else worked fine, so imagine my surprise and the language I used when I hit that board ... I replaced them with ceramics since they were only 10uf and it now works fine  



#53 The Usotsuki OFFLINE  

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Posted Tue Mar 19, 2019 10:40 PM

I am not familiar enough with x86 to know if it supports trapping bad instructions for emulation in a library.

SIGILL.

 

Even the 186 had it, although the original 8086/8088 did not.



#54 OLD CS1 OFFLINE  

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Posted Tue Mar 19, 2019 11:33 PM

SIGILL.

 

Even the 186 had it, although the original 8086/8088 did not.

 

Sounds like a fun project for someone, then -- Windows 10 on a 486 :D



#55 Gamemoose OFFLINE  

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Posted Wed Mar 20, 2019 8:52 AM

 
Sounds like a fun project for someone, then -- Windows 10 on a 486 :D

Oh man....that reminds me of my Dad trying to run Windows on a way old computer. I can't remember if it was Windows 3.1 on an 8088 or 95. I just remember it took 10 minutes to boot.

Windows 10 on a 486. My nine year old i7 laptop sounds like a jet running W10 and was slow. One would have to be a masochist to try a procesdor that old.

Edited by Gamemoose, Wed Mar 20, 2019 8:53 AM.


#56 Flojomojo OFFLINE  

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Posted Wed Mar 20, 2019 8:59 AM

Pretty sure Windows 10 is looking for CPU instructions that won't exist on a 486? If you have time on your hands, you should try it. 



#57 DragonGrafx-16 ONLINE  

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Posted Wed Mar 20, 2019 5:26 PM

There's a video of LGR running MS-DOS on a a Ryzen cpu lol

#58 Osgeld ONLINE  

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Posted Wed Mar 20, 2019 5:42 PM

There's a video of LGR running MS-DOS on a a Ryzen cpu lol

 

I run DOS 6.22 all the time on my FX and i7 machines

 

not to actually run programs and whatnot but sometimes its just easier to set up a hard drive in dos on a newbox, pop into windows and dump the drivers and utilities that went with it I downloaded from compaq or whatnot and move on with life 

 

its still x86, it works fine ... within reason, bone stock forget USB, SATA in AHCI mode etc 



#59 OLD CS1 OFFLINE  

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Posted Thu Mar 21, 2019 4:38 PM

Apple ≠ orange.  Running MS-DOS on a Ryzen is a demonstration of CPU backward-compatibility.  Running Windows 10 on a '486 is software backward-compatibility, or CPU forward-compatibility if you want to call it such.



#60 DragonGrafx-16 ONLINE  

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Posted Sat Mar 23, 2019 1:43 PM

I never said it was the same thing... lol

#61 OLD CS1 OFFLINE  

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Posted Today, 12:28 AM

I never said it was the same thing... lol

 

The inference was natural given the discussion at hand.






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