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ISA

Provided by

isa

Class Hierarchy

conf-object → log-object → ISA

Interfaces Implemented

log_object, simple_interrupt

Description

The ISA device models the industry standard architecture bus present in most PCs. It is responsible for dispatching interrupts to the interrupt controllers (I/O-APIC and/or PIC). The operating system must make sure that interrupts are not handled by both interrupt controllers either by disabling one of the controllers or by masking interrupts in at least one of the controllers.

Attributes

Attributes inherited from class conf-object

attributes, classname, component, iface, name, object_id, queue

Attributes inherited from class log-object

access_count, log_buffer, log_buffer_last, log_buffer_size, log_group_mask, log_groups, log_level, log_type_mask

Attribute List

ioapic

Optional attribute; read/write access; type: unknown type.

The advanced programmable interrupt controller attached to. Must implement the simple-interrupt interface.

irq_status

Optional attribute; read/write access; type: unknown type.

(i0, i1, ..., i31) Entry in specifies the current status for input interrupt pin i, 1 for active and 0 for inactive.

irq_to_pin

Optional attribute; read/write access; type: unknown type.

(i0, i1, ..., i31) Entry in specifies which pin irq n is attached to.

pic

Required attribute; read/write access; type: unknown type.

The programmable interrupt controller attached to. Must implement the simple-interrupt interface.

Command List

Commands defined by interface log_object

log, log-group, log-level, log-size, log-type

Commands

info	print information about the device
status	print status of the device

Command Descriptions

<ISA>.info

Synopsis

<ISA>.info

Description

Print detailed information about the configuration of the device.

<ISA>.status

Synopsis

<ISA>.status

Description

Print detailed information about the current status of the device.

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