[NCG_Mike]

I assume they had a scaled up integer sin and tan tables and used matrices for scale, rotation and projection?

I do remember seeing this in 68K.

[MarkMoxon]

There are tables for sin, cos and arctan, but these are only used for drawing the planet’s circles. All the ship-drawing and universe manipulation is done using the small angle approximation, so there’s no need for lookup tables.

Lots more info here:

https://www.bbcelite.com/explore/articles/deep_dive_pitching...