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Restoring YC's Xerox Alto day 8: it boots

292 点作者 dwaxe超过 8 年前

19 条评论

raldi超过 8 年前
I love that the first boot screenshot at <a href="https:&#x2F;&#x2F;lh3.googleusercontent.com&#x2F;-JB4VOj7FgnU&#x2F;V-lCHIADrsI&#x2F;AAAAAAAA9Ak&#x2F;WJgwdr60tqYHWLM7htNMygs1JuuUaEiJwCHM&#x2F;s9999&#x2F;boot.jpg" rel="nofollow">https:&#x2F;&#x2F;lh3.googleusercontent.com&#x2F;-JB4VOj7FgnU&#x2F;V-lCHIADrsI&#x2F;A...</a> says:<p><pre><code> Date and Time Unknown </code></pre> Oh, you poor sweet computer, if we told you the answer, it would blow your little mind.
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rhardih超过 8 年前
This series is the best thing on HN in a long time. As a software engineer by trade, I feel like I&#x27;ve been missing out not learning more about electrical engineering. The level of knowledge and skill involved in this restoration is downright awe-inspiring.
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ChuckMcM超过 8 年前
Awesome!<p>All you need is the white lab coat and Gene Wilder&#x27;s &quot;It&#x27;s alive!&quot; in the background. Congrats on getting it to this point, as anyone who has brought up new systems for the first time knows, once you can get your central processor to load and run software of your choice, you can use it to tell you what it not working correctly and bring everything else up. It is always a total rush when the system boots for the first time. (or in this case, &quot;boots again&quot; :-))<p>I would be particularly keen to insure that the arrow keys work on the keyboard, as a lot of Altos were used to play mazewar and that was hard on the arrow keys.
DIVx0超过 8 年前
As is said every time this blog updates: This is very interesting stuff and I enjoy reading about the progress.<p>I can&#x27;t imagine the excitement these folks felt when the machine finally booted up. All of their skilled trouble shooting and hard work were spot on.<p>I can&#x27;t wait to read more.
tiles超过 8 年前
This is an amazing milestone! I have to ask, why did we need a separate boot disk sent over instead of flashing the previous disk with the contents of a boot disk? I suppose swapping out parts is an expected part of restoration though.
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CodeWriter23超过 8 年前
The disk seek problem didn&#x27;t mysteriously disappear. You need to bust out some some contact cleaner and clean those header strip connections, both sides.
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intrasight超过 8 年前
This has been a fun series to track. I used an Alto when I was in college. As an EE, we had to wire-wrap a computer using bit-slice and TTL parts. Definitely the hardest lab component course I took (there were much harder theoretical courses).<p>So a new Broadwell-EP Xeon chip has like 7 billion transistors. I&#x27;m trying to imagine this kind of computer hardware archeology as it will be done thirty years from now.
kens超过 8 年前
The video of the Alto booting is now available: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=12590137" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=12590137</a>
thought_alarm超过 8 年前
Really neat. I can&#x27;t wait to see the video!<p>The pictures of screen look unusual, as if every second scan line is missing. Is the Alto outputting an interlaced video signal? That would be very interesting and unexpected.
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sama超过 8 年前
Congrats to everyone who made this happen. It&#x27;s so cool!
tkinom超过 8 年前
What were the CPU&#x2F; ISA used in the Alto?
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0x0超过 8 年前
I&#x27;m trying to read the article on an iphone but every time I zoom out to see the full width article I get bounced over to an article about toothbrushes?!<p>For the better part of a minute I was wondering if they had monkey-patched the disk controller with an electronic toothbrush?!
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fit2rule超过 8 年前
I love it that its finally booting. I wonder if they&#x27;ve considered taking all the probes off, and booting without debugging hardware attached ..
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dudouble超过 8 年前
Really cool stuff. Makes me want to give another go at bringing up my C-64 (much simpler, of course).<p>If only I had proper tooling and knowledge...
bogomipz超过 8 年前
This has really been a great series to read. Does anybody know where this will live when they are done restoring it?
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mempko超过 8 年前
The living computer museum is an amazing place. Highly recommend visiting if you ever come to Seattle.
julian_1超过 8 年前
Is this the only Alto running today?
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obaymardini超过 8 年前
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obaymardini超过 8 年前
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