I remember that Ken once said that AGI was meant to be portable. In SYSDEFS.H it has
%var machineType 20
#define PC 0 [PC, compatibles
#define JR 1 [PCjr
#define TANDY 2 [Tandy 1000
#define APPLEII 3 [Apple IIe, IIc
#define ST 4 [Atari ST
#define AMIGA 5 [Amiga
#define MAC 6 [Fat Mac, Mac Plus
#define CORTLAND 7 [?