ocr: 80x66.Processor TR o ISS: SegmentSelector: SystemMemory 1SS GDT GXO 8X4 OXE TSSSegment 0X643 OPM Offseu Descriptor TOPM Figure 1: Tbe segmertt selector int tbe processors TR, poinis tot tbe segment descriptor in tbe GDI, wbich defines tbe location and size ofthe ISS - ift memory. The OPM As stored as) part ofthe I3S, Its offset is stored in a 2-byte integer at location Oooi i92 the ISS.