Pi number calculator in 146 bytes of 8088 machine code | Hacker News Reader

Pi number calculator in 146 bytes of 8088 machine code

github.com

77 pointsnanochess9 comments

The author has other interesting bootable games, like:

If you like learning assembly language/OSDev, his repos are a must to be bookmarked.

The link to the c code it is based on is down but the archive is:

Not sure I understand how that's calculating Pi though.

I think it is the Spigot algorithm for Pi

If you enjoy Pi stuff then I'd recommend the Pi Unleashed book

Which has this algorithm and many more!

That first link deserves its own submission. Very interesting read

Simon Tatham (of PuTTY fame) has an implementation of this algorithm which supports far more than just pi.

Interested parties should check out Ken Ward's excellent pi-calculating javascriptural here:

Impressive!

It fills the screen with digits of pi, then stops (tried it at https://copy.sh/v86/ ) - is it supposed to scroll?

According to comments in the .asm file

    It will generate (14000-14)/14*2 digits.
    Cannot go further with current precision

Which works out to about 500 digits. Maybe it's just reached its limit.

If this works on an 8088, booting directly from the boot sector, how far are we to compiling it for a Game Boy (an 8080-like) cartridge?