Sound fonts are effectively sample banks, a lot of earlier soundcards are basically full synthesisers just without a control panel or keys.
There will be various elements of how the operators and effects work or any nonlinearity introduced by the circuits that will not necessarily be reflected in a sound font
Why not just dump the Sound Fonts and use them in modern multitrack MIDI software?
Sound fonts are effectively sample banks, a lot of earlier soundcards are basically full synthesisers just without a control panel or keys.
There will be various elements of how the operators and effects work or any nonlinearity introduced by the circuits that will not necessarily be reflected in a sound font