PORTIBM PC Portable (uses same BIOS as XT) 0278-027F - Intel 82360SL/82091AA - EPP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) Range: PORTIBM PC Portable (uses same BIOS as XT) 0278h or PORTIBM PC Portable (uses same BIOS as XT) 0378h SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0278h"LPT1",PORTIBM PC Portable (uses same BIOS as XT) 0678h"ECP" 0278-027A as for standard parallel port 027B RW address strobe 027C RW data strobe 0 027D RW data strobe 1 027E RW data strobe 2 027F RW data strobe 3