PORTIBM PC Portable (uses same BIOS as XT) 02E0-02EF - GPIB (General Purpose Interface Bus, IEEE 488 interface)
		(GAB 0 on XTIBM PC XT)
02E1  ??  GPIB (adapter 0)
02E2
02E3
                                                                                

PORTIBM PC Portable (uses same BIOS as XT) 02E0-02EF - data aquisition	 (ATIBM PC AT)

02E2  ??  data aquisition (adapter 0)
02E3  ??  data aquisition (adapter 0)