Specifications

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

removed

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32"

--------H-0A---------------------------------

INT 0A C - IRQ2 - Tandy 1000-series HARD DISK

Notes: this interrupt may be masked by setting bit 2 on I/O port 21h

the Tandy 1000, 1000A, and 1000HD use IRQ2 for the hard disk; the

1000EX, HX, RLX, RLX-HD, RLX-B, RLX-HD-B use IRQ5 instead; the

1000RL, RL-HD, SL, SL/2, TL, TL/2, and TL/3 are jumper-selectable

for either IRQ2 or IRQ5 (default IRQ5); the 1000SX and TX are

DIP-switch selectable for IRQ2 or IRQ5 (default IRQ2); the RSX and

RSX-HD use IRQ14. Tandy systems which use IRQ2 for the hard disk

interrupt use IRQ5 for vertical retrace.

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71

--------H-0A---------------------------------

INT 0A - IRQ2 - ROLAND MPU MIDI INTERFACE

Note: newer Roland cards and MIDI interfaces by other manufacturers use

a jumper-selectable IRQ, but software and hardware generally defaults

to IRQ2

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32"

--------C-0A---------------------------------

INT 0A CP - CPU-generated (80286+) - INVALID TASK STATE SEGMENT

Desc: automatically called during a task switch if the new TSS specified by

the task gate is invalid for any of the following reasons:

TSS limit is less than 43 (80286) or 103 (80386/80486)

LDT selector invalid or segment not present

null SS selector, or SS selector outside LDT/GDT limit

stack segment is read-only

stack segment DPL differs from new CPL, or RPL <> CPL

CS selector is outside LDT/GDT limit or not code

non-conforming code segment's DPL differs from CPL

conforming code segment's DPL > CPL

DS/ES selectors outside LDT/GDT limit or not readable segments

Note: the handler must use a task gate in order to have a valid TSS under

which to execute; it must also reset the busy bit in the new TSS

SeeAlso: INT 0B"CPU"

--------H-0B---------------------------------

INT 0B C - IRQ3 - SERIAL COMMUNICATIONS (COM2)

Desc: automatically asserted by the UART when COM2 needs attention, if the

UART has been programmed to generate interrupts

Notes: the TOPS and PCnet adapters use this interrupt request line as an

alternate

-20-

http://www.foxitsoftware.com For evaluation only.