I was 2 years old when I saw the saturn V rocket launch.
I decided that I wanted to build rockets

Just be careful: when you go from 6502 to ARM64:
1/ in ARM64, you must explicitely indicate 's' if you want to update the flags

2/ in ARM64 storing a register write 8 bytes instead of one byte (this is obvious but can be surprising: when writhing a char also write 7 zeroes in memory)

I think the code is simpler with LEDs because
1/ there is no timing critical issues
2/ there is only one bit per pixel

The code is available here:
github.com/PPoliakoff/P...

It is worse than that:
When I enter the room they welcome me with the Team Rocket Motto

I did it (this is a printscreen on the simulator but it also runs on the real LED matrix hardware)

and we also need a VGA port because ......

My favorite game at that time: C#2003

yes: this comic.

Remember that crossing the 3.3V and the 5V power lines can have unexpected consequences....
Including an unexpectedly perfectly working system 🤦

That's in line with my experience of Linux: whatever I try I always endup editind strange configuration files or adding command line parameters,... I wonder how people who do not have 40 years of experience with computers can succeed in configuring touchscreen, midi, or a EPROM programmer on LINUX.

With a switch like this one you are sure the PC will not spontaneously switch on to install unwanted upgrades

Here is a Python version

Repairing a portable computer external power supply module on Monday. It had been unplugged the whole week-end so sure the capacitors must be discharged.....

well,... Ouch they were still charged

I always hated that the 74LS247 did not support Hexadecimal display. Why does this chip display garbage for numbers above 9 instead of displaying AbCdEF (note the b and d in lowercase to avoid confusion with 8 and 0 ).

There was at that time a chip displaying correct hex but it very expensive