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2 addressing, interrupts, and submodule id – Siemens Simatic S7-400 User Manual

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Interface Submodules

13-7

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

13.3.2

Addressing, Interrupts, and Submodule ID

Addressing

Addressing corresponds to the AT standard.

The following addresses are occupied by the IF 962-VGA interface submodule:
Memory addresses:

A0000

H

to C7FFF

H

I/O addresses:

060

H

to 06F

H

, 3B0

H

to 3BB

H

, 3BF

H

to 3DF

H

Interrupt Request

The interface submodule supplies the following interrupts:

IRQ a:

Keyboard interrupt

IRQ b:

Mouse interrupt (trackball)

IRQ c:

VGA interrupt

The BIOS routes these interrupts to ISA interrupts in accordance with Table 13-6.

Table 13-6

Interrupt Assignments of the IF 962-VGA Interface Submodule

Interrupt Source of the Interface Submodule

ISA Interrupt

Keyboard

IRQ a

IRQ 1

Mouse (track ball)

IRQ b

IRQ 12

VGA

IRQ c

Can be set in the BIOS setup

Submodule ID

The IF 962-VGA interface submodule has the submodule ID 81

H

.

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