Specifications

D:\D\inter61a\INTERRUP.A Saturday, January 08, 2011 11:31 AM

CS, DS, ES, FG, or GS

a PUSH MEM or POP MEM instruction contains an invalid bit encoding

in the second byte

an instruction exceeds the maximum length allowed (10 bytes for

80286, 15 bytes for 80386/80486)

an instruction wraps from offset FFFFh to offset 0000h

called in protected mode on protection violations not covered by INT 06

through INT 0C, including

segment limit violations

write to read-only segments

accesses using null DS or ES selectors

accesses to segments with privilege greater than CPL

wrong descriptor type

called on 80486 protected-mode floating-point protection fault

SeeAlso: INT 09"80486",INT 0C"STACK"

--------H-0E---------------------------------

INT 0E C - IRQ6 - DISKETTE CONTROLLER

Desc: this interrupt is generated by the floppy disk controller on

completion of an operation

Notes: default handler is at F000h:EF57h in IBM PC and 100%-compatible BIOSes

may be masked by setting bit 6 on I/O port 21h

DOS 3.3+ revectors IRQ6 to a stack-switching routine unless STACKS=0

has been set in CONFIG.SYS. MS/PC-DOS use the IBM Interrupt Sharing

Protocol (see #02568) when hooking this IRQ

SeeAlso: INT 0D"IRQ5",INT 56"DESQview",INT 5E"DoubleDOS",INT 7E"GO32"

--------C-0E---------------------------------

INT 0E C - CPU-generated (80386+ native mode) - PAGE FAULT

Desc: this interrupt is generated in protected and virtual-86 modes on

attempting to access a 4K memory page whose page table entry has

the "present" bit cleared

Notes: used to implement virtual memory--when the page fault occurs, the

operating system can load the appropriate page from disk

a protected-mode program written in the Flat memory model will often

generate this interrupt (typically reported as an Exception #14 or

Exception 0E with a register dump) when dereferencing an

uninitialized or corrupted pointer

SeeAlso: INT 0B"CPU"

--------h-0E---------------------------------

INT 0E C - HP 95LX - EXTERNAL CARD INTERRUPT

SeeAlso: INT 0D"HP 95LX",INT 0F"HP 95LX",INT 15/AX=4DD4h

--------H-0F---------------------------------

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