The CPU is far from being the most sophisticated component of a computer.

At least if we're talking about #permacomputing, or, rather, scavenging and collapse computing. Okay, maybe in open source hardware, too.

Designs of new hobbyist computer architectures are seemingly revolving around inventing a CPU and/or mapping the peripherals on the system bus.

And you could find many simple CPUs based on FPGAs, logic chips, transistors, valves and even relays.

What you usually don't find is custom RAM. Before Intel introduced cheap solid-state RAM in 1969, there were at least six contemporary competing types of RAM used in computers, and at least as many were already considered obsolete.

What you don't find is peripherals. There are rare cool appliances, like punch tape readers. But have you seen a custom hard drive? A printer?

All these are "easy" in terms of relative complexity for industry. But they are simultaneously very hard for a hobbyist/DIYer/tech collapsnik.

Change my mind, show me the good stuff~

@aeva @nina_kali_nina 3d printer as storage device, it prints little boats onto a big array of load cells to set bits and runs the head into them sideways and knocks them off to clear bits

@emily @nina_kali_nina see the first place I would have went with that idea would have been printing the world's crappiest sounding records

@aeva @nina_kali_nina I do think it would be hilarious to boot a computer from a vinyl record

it's like a cassette, but the initialization sounds *warmer*

@sol_hsa a tape in is a mandatory part of IBM PC! Booting DOS from this input is less weird to me than from ROM

@nina_kali_nina I never saw a single PC with a tape drive. I've heard of them, though. also never saw a PC with Rom basic.

@sol_hsa Colorado drives used to be ubiquitous - I have one in my 286. Our home gaming/server PC has an LTO tape drive, too - it's very nice for storing all the downloads, for the low cost of £10-15 per 3TB used archival-friendly tape.
But I'm talking about something completely different here! On IBM PC and PC Jr, one of 8255s was used for a cassette interface - a 5-pin DIN that can be connected to a domestic casette player

@nina_kali_nina Just googled (duckduckwent?) what a Colorado drive was, and all the results were about road trips.

I'm not familiar with this term. Could you possibly enlighten me?

@th @emily @aeva @nina_kali_nina Finally I get to make the joke, after all these years:

You implemented LP-ROM succesfully?

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