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LT6502: A 6502-based homebrew laptop

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Re: LT6502: A 6502-based homebrew laptop

#51
3D printer beds have been getting bigger, but slicers don’t seem to account for curling as large prints cool. The problem is long linear runs on bottom infill and perimeters shrinking. I’ve been cutting my large parts into puzzle like shapes, but printing them fully assembled. This adds curved perimeters throughout the bottom layer, reducing the distance stress can travel before finding a seam to deform.

That said, a retro laptop this thick would look really nice in stained wood.

Re: LT6502: A 6502-based homebrew laptop

#52
post #42
post #2

I sometimes wonder what the alternate reality where semiconductor advances ended in the eighties would look like. We might have had to manage with just a few MB of RAM and efficient ARM cores running at maybe 30 MHz or so. Would we still get web browsers? How about the rest of the digital transformation? One thing I do know for sure. LLMs would have been impossible.

> Would we still get web browsers? Yes, just that they would not run millions of lines of JavaScript for some social media tracking algorithm, newsletter signup, GDPR popup, newsletter popup, ad popup, etc. and you'd probably just be presented with the text only and at best a relevant static image or two. The web would be a place to get long-form information, sort of a massive e-book, not a battleground of corporatio…

The whitewashing of the past in this thread is something else.

Did everyone forget the era of web browsing when pages were filled with distracting animated banner ads?

The period when it was common for malicious ads to just hijack the session and take you to a different page?

The pop-up tornados where a page would spawn pop ups faster than you could close them? Pop unders getting left behind to discover when you closed your window?

Heavy flash ads causing your browser to slow to a crawl?

The modern web browsing experience without an ad blocker feels tame compared to the early days of Internet ads.

Re: LT6502: A 6502-based homebrew laptop

#53
post #2

I sometimes wonder what the alternate reality where semiconductor advances ended in the eighties would look like. We might have had to manage with just a few MB of RAM and efficient ARM cores running at maybe 30 MHz or so. Would we still get web browsers? How about the rest of the digital transformation? One thing I do know for sure. LLMs would have been impossible.

I always think the Core 2 Duo was the inflexion point for me. Before that current software always seemed to struggle on current hardware but after it was generally fine.

As much as I like my Apple Silicon Mac I could do everything I need to on 2008 hardware.

Re: LT6502: A 6502-based homebrew laptop

#54
post #18

Earlier quoted context omitted.

I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. Our internet was a lot slower than as well.

> I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. I know it’s a meme on HN to complain that modern websites are slow, but this is a perfect example of how completely distorted views of the past can get. No, browsing the web in the early 90s was slooow . Even simple web pages took a long time to load. As you said, internet connections were very slow too. I remember…

what a glorious time that was! now it's too easy to get stuck looking at the stream of (usually AI generated) crap. I long for the time when the regular screen break was built-in.

Re: LT6502: A 6502-based homebrew laptop

#55
post #18

Earlier quoted context omitted.

I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. Our internet was a lot slower than as well.

> I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. I know it’s a meme on HN to complain that modern websites are slow, but this is a perfect example of how completely distorted views of the past can get. No, browsing the web in the early 90s was slooow . Even simple web pages took a long time to load. As you said, internet connections were very slow too. I remember…

No, I think he’s right. I don’t recall the web being any faster today than it was thirty years ago, download speed excepted. The overall experience is about the same, if not worse, IMO.

Re: LT6502: A 6502-based homebrew laptop

#56
Good timing. My current weekend project is constructing something similar to the the first third of Ben Eater's 6502 design (last weekend was the clock module plus some eccentricities).

It occurred to me that given the 6502's predictable clock cycle timings it should be possible to create a realtime disassembler using e.g. an Arduino Mega 2560+character lcd display attached to the 6502's address/data/etc pins.

Of course, this would only be useful in single-stepping/very slow clock speeds. Still, I think it could be useful in learning how the 6502 works.

Is there relevant prior work? I'm struggling with my google fu.

Re: LT6502: A 6502-based homebrew laptop

#57
post #2

I sometimes wonder what the alternate reality where semiconductor advances ended in the eighties would look like. We might have had to manage with just a few MB of RAM and efficient ARM cores running at maybe 30 MHz or so. Would we still get web browsers? How about the rest of the digital transformation? One thing I do know for sure. LLMs would have been impossible.

This is basically the premise of the Fallout universe. I think in the story it was the transistor was never invented though.

Re: LT6502: A 6502-based homebrew laptop

#58
post #42

Earlier quoted context omitted.

> Would we still get web browsers? Yes, just that they would not run millions of lines of JavaScript for some social media tracking algorithm, newsletter signup, GDPR popup, newsletter popup, ad popup, etc. and you'd probably just be presented with the text only and at best a relevant static image or two. The web would be a place to get long-form information, sort of a massive e-book, not a battleground of corporatio…

The whitewashing of the past in this thread is something else. Did everyone forget the era of web browsing when pages were filled with distracting animated banner ads? The period when it was common for malicious ads to just hijack the session and take you to a different page? The pop-up tornados where a page would spawn pop ups faster than you could close them? Pop unders getting left behind to discover when you clos…

What you describe sounds like the late nineties to me, not what we had with the technology of (at most) 1990. There are orders of magnitude between available performance and memory on both ends of this decade.

Re: LT6502: A 6502-based homebrew laptop

#59
post #18

Earlier quoted context omitted.

I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. Our internet was a lot slower than as well.

> I remember using the web on 25mhz computers. It ran about as fast as it does today with a couple ghz. I know it’s a meme on HN to complain that modern websites are slow, but this is a perfect example of how completely distorted views of the past can get. No, browsing the web in the early 90s was slooow . Even simple web pages took a long time to load. As you said, internet connections were very slow too. I remember…

Yeah slow?

Try using a 2400baud modem, that was slow

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