AMD-K6-2E Datasheet, PDF (73/332 Pages) Advanced Micro Devices – AMD-K6™-2E Embedded Processor

22529B/0—January 2000
Preliminary Information
AMD-K6™-2E Processor Data Sheet
Reserved
Symbol
P
DPL
DT
Type
Description
Present/Valid Bit
Descriptor Privilege Level
Descriptor Type
See Table 10
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
Bits
15
14-13
12
11-8
Offset 31–16
P DPL 0 Type
Segment Selector
Offset 15–0
Figure 49. Gate Descriptor
3.6
Exceptions and Interrupts
Table 11 summarizes the exceptions and interrupts.
Table 11. Summary of Exceptions and Interrupts
Interrupt
Number
Interrupt Type
0 Divide by Zero Error
1 Debug
2 Non-Maskable Interrupt
3 Breakpoint
4 Overflow
5 Bounds Check
6 Invalid Opcode
7 Device Not Available
8 Double Fault
9 Reserved - Interrupt 13
10 Invalid TSS
11 Segment Not Present
12 Stack Segment
13 General Protection
14 Page Fault
16 Floating-Point Error
17 Alignment Check
0–255 Software Interrupt
Cause
DIV, IDIV
Debug trap or fault
NMI signal sampled asserted
Int 3
INTO
BOUND
Invalid instruction
ESC and WAIT
Fault occurs while handling a fault
—
Task switch to an invalid segment
Instruction loads a segment and present bit is 0 (invalid segment)
Stack operation causes limit violation or present bit is 0
Segment related or miscellaneous invalid actions
Page protection violation or a reference to missing page
Arithmetic error generated by floating-point instruction
Data reference to an unaligned operand. (The AC flag and the AM bit of CR0 are set to 1.)
INT n
Chapter 3
Software Environment
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