AMD AMD-K6-2/400 User Guide - Page 82
Application Segment Descriptor, Table 9., Data/Code, Description
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Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet 23542A/0-September 2000 Reserved Symbol G D AVL P DPL DT Type Description Granularity 32-Bit/16-Bit Available to Software Present/Valid Bit Descriptor Privilege Level Descriptor Type See Table 9 Bits 23 22 20 15 14-13 12 11-8 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Base Address 31-24 A GD V Segment P DPL 1 Type L Limit Base Address 23-16 Base Address 15-0 Segment Limit 15-0 Figure 51. Application Segment Descriptor Table 9. Application Segment Types Type Data/Code Description 0 Read-Only 1 Read-Only - Accessed 2 Read/Write 3 Read/Write - Accessed Data 4 Read-Only - Expand-down 5 Read-Only-Expand-down, Accessed 6 Read/Write - Expand-down 7 Read/Write-Expand-down, Accessed 8 Execute-Only 9 Execute-Only - Accessed A Execute/Read B Execute/Read - Accessed Code C Execute-Only - Conforming D Execute-Only-Conforming, Accessed E Execute/Read-Only - Conforming F Execute/Read-Only-Conforming, Accessed 60 Software Environment Chapter 3