PORTIBM PC Portable (uses same BIOS as XT) 007C-007D - HP-Vectra - PIC 3 - PROGRAMMABLE INTERRUPT CONTROLLER (8259) Notes: cascaded to first controller. used for keyboard and input device interface. SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0020h-0021h,INT 68"Vectra",INT 6E"Vectra" 007C RW HP-Vectra PIC 3 see at 0020 PIC 1 007D RW HP-Vectra PIC 3 see at 0021 PIC 1