hey /g/entoomen.
after having successful built my first computer based around the Z80 CPU, i want to build a 32bit one, based on the Intel 80486 (i486, 486) more specifically the Intel 486DX.
however i can't find any data sheet on the required components.
i would appreciate you help.
thank you.
>>51840686
Check the library of congress
>>51840686
>2015
>32 bits
mfw
intel a shit
>>51840719
most todays CPU are 64 bit actually
>>51841023
>not knowing cpus today are 86 bits
please
Retards in this thread think OP was just wanting to buy parts. He obviously wants to build it from scratch.
>>51841103
pretty much
I'm pretty sure that the intel CPUs up to the Pentium are well documented. Not sure how you want to replicate the chipsets and ohter components
AFAIK the x86 architecture and bare minimum chipset required is a complete clusterfuck of backward compatibility and will be a pain to build yourself by hand.
You will be better off with a cleaner embedded design such as the Intel i960.
>>51841252
already looked that up, there is no "default motherboard" designe in the datasheet.
they just give you details about the CPU, but Nothing on the componant needed to make it work.
Unless you're planning to make an old DOS or Win3.x game machine (you'd want at least a Pentium for Win95), why don't you use ARM?
>>51841279
What about ARM? Can you build their architecture fairly nicely?
>>51841297
aint planing to make a retro-gaming machine.
i could get that in few minutes with an R-Pi.
i want to build a retro computer, its not about gaming, its the building part that is the goal
>>51841289
So are you panning to use custom ASICs for e.g. the chipset? if you want to built everything using simple logic swithes, try making an XT clone
www(.)datasheetarchive(.)com/i486%20PC%20MOTHERBOARD%20CIRCUIT%20diagram-datasheet.html
Hows this?
You probably won't find any complete diagrams with all the traces for anything except the XT
>not building the CPU yourself too
XT clone
>>51841470
http://www.mtmscientific.com/Big%20Blue%20Seed.pdf
>>51841355
only datasheets about recent intel chipsets.
still no diagram of a motherboard
>>51841344
the goal is to build it with the tech that was available back in the day.
some custum ASIC but mostly general purpose switches.
>>51841425
>bulding a 32 bit CPU with simple logic switches
i don't have enought space in my room for that m8
>>51841470
>>51841502
looks interesting
IBP PS/2 schematics:
http://www.dasarodesigns.com/schematics-and-resources/?drawer=files*IBM
>>51840686
Bump for justice
>>51840686
/g/ is more about phone screenshots than actual technology, how nice.
>>51840686
if you're talking about actually building a 386/486-based system from scratch, you can look around S-100 hobbyist circles and see if anyone's posted some schematics or other info on homebrew processor cards.
Intel used to publish books on system design using their products, don't really know if it went up to 386/486 era though.
>>51841279
I've always wanted to play around with the 960 or the 860, they seem fascinating.
>>51841681
If he wants an expansion bus I don't think he'll be able to source a chipset for MCA.
>>51844891
i'm not planong to build a processor, just the motherboard (I/O, gpu, audio)
I have built several hobby computers reminiscent of the 1970/80s era. My first computer I built in middle school back in the 90's was a wire wrapped 6502 capable of running CP/M.
I would stick with Z80, 6502 and similar equivalence. The magnitude of components and traces on the 486 was something outside of the scope of hobby/enthusiast. That's why you won't find many people (if at all) who did it.
I'm not telling you not to do it... Just be aware that designing and building a 486 system from scratch (hell, even anything after the 8086) is a lot more difficult and cumbersome than you'd expect.
If you can make it to a Vintage Computer Fair ( like http://www.vintage.org ), check out all the oddities from the hobby scratch built era and talk to as many people as you can. Maybe I'll see you there anon.
>>51846973
I know, I'm saying to check out S-100 386 cards because they may lead you in the right direction.
>>51847202
CP/M had a 6502 port? Neat.
>>51847202
i know for a fact that it is resonably doable
http://dubel.org/computer/
sure, its not gonna be easy, but still doable by hand
too bad the guy who made it didn't share any détails
>>51847202
Z80 and 6502 are neat for intro to computers, its a good way to learn but they are qute limited.
>Maybe I'll see you there anon.
more thanlikely
>>51847239
alright, i'll check, thanks
