DX only
You need a maths coprocessor, and you'll need to make a special boot floppy juggling RAM allocation.
(, Sat 17 Apr 2021, 7:42, Reply)
The SX/DX thing was a marketing gimmick.
They all had the co-processor, disabled in the SX.
(
FeralCatMan Long ads need comments sections, Sun 18 Apr 2021, 18:07,
Reply)