[trollied]

Reminds me of the project that used a Raspberry Pi running a software emulator as an Amiga CPU - Pi plugged into the CPU socket via an adapter board. Probably the most impressive project I've ever seen. https://www.hackster.io/news/hands-on-with-the-pistorm-the-u...

[LeoPanthera]

There's a similar project for the Acorn BBC Micro called PiTubeDirect, which allows the Pi to emulate several different CPUs, while connected to the BBC Micro's "tube" second processor slot.

https://github.com/hoglet67/PiTubeDirect

(The BBC Micro itself was quite remarkable for supporting multiple processors, which did not have to be the same architecture as the host 6502. Amazing for 1981.)

[metadat]

This seems worthy of its own HN submission, so I did it:

https://news.ycombinator.com/item?id=31449828

[reaperducer]

Lots of interesting drop-in chip replacements in the retro computing world these days.

Two I can think of off the top of my head:

- FPGA 6581 to replace a Commodore 64 SID chip.

- There's a drop-in sorta Z-80 so you can run CP/M on the TRS-80 Model 100.

[Terry_Roll]

I wonder if we might see drop in replacements used in other tech from the past that might be end of life or near to, especially space satellites where power supplies permit.

[sigstoat]

space hardware doesn’t involve a lot of socketed parts.

and end of life usually means battery or mechanical failures, not “the electronics need an upgrade”