The recreation has a small http server that runs on its own hot spot. various bits of information can be accessed and adjusted, making for faster debug.
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https://www.youtube.com/watch?v=C0BIkpoKYFE
This is a time lapse of a block of keys being engraved with legends. The keys are still on the removable build plate of my Fisher printer.
Details here:
https://trochilidae.blogspot.com/2019/12/mk-52-calculator-mk-52-is-russian.html
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https://www.youtube.com/watch?v=BY-ENm_4XS8
The code has been re-written to not use interrupts for the UARTs as that adversely affects the code that emulates the ROM.
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https://www.youtube.com/watch?v=QpplPo5gwxs
The latch on my (already replaced) Aerospace has broken again, so I fit a new one. This is a non-original part from Cousins in the UK. It's the 18mm one on this page:
https://www.cousinsuk.com/product/3-fold-ti
It doesn't fit unless parts of it are filed away, on both parts.
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https://www.youtube.com/watch?v=grh3kfrQLrw
The adapter can now talk to a serial printer. That's about it for the adapter, everything I wanted to attach to the 502 is now attached. The code might need a bit of polishing, but it does quite a lot already.
Some information about the code is here:
https://trochilidae.blogspot.com/2021/03/finite-state-machines-and-software.html
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https://www.youtube.com/watch?v=e1qKueurD7A