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80386DX ISA single board microcomputer

alexandrugroza.ro

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Re: 80386DX ISA single board microcomputer

#2
What a cool project. I really like the way he analyzed his failures, learned from them, and documented the process, and tried harder.

I wonder, did he design the ISA bus by himself or did he use an existing one?

Re: 80386DX ISA single board microcomputer

#6
post #5
post #4

I didn't realize Intel switched the meaning of DX/SX between their 386 and 486 CPU's.

How so? SX was always the crappy version.

I was also confused by this statement and had to refresh my memories. In short, 386sx had 16/24 bus instead of 32, which made it 286 main board compatible. 486sx was simply non-fpu version.

Re: 80386DX ISA single board microcomputer

#7
Awesome project, although I personally can’t identify with putting such effort into reinventing the past instead of making something new.

I suspect different people live in different periods. I’ve known people who always dwell on the past, those who are preoccupied with the future and those who are in the present and not overthink too much in either direction.

Re: 80386DX ISA single board microcomputer

#8

Awesome project, although I personally can’t identify with putting such effort into reinventing the past instead of making something new. I suspect different people live in different periods. I’ve known people who always dwell on the past, those who are preoccupied with the future and those who are in the present and not overthink too much in either direction.

A lot can be learned for the present from such projects. Older stuff is usually less integrated, more tolerant to manufacturing by hand (for many reasons, including relatively easy to deal with frequencies, board layout, and required layers), and you have plenty of "reference" implementation and documentation to delve into. It is a very valuable hands-on experience that certainly gives an edge over people who only know how computers are put together theoretically.

Re: 80386DX ISA single board microcomputer

#10

Awesome project, although I personally can’t identify with putting such effort into reinventing the past instead of making something new. I suspect different people live in different periods. I’ve known people who always dwell on the past, those who are preoccupied with the future and those who are in the present and not overthink too much in either direction.

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