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: A0000H to C7FFFH
I/O addresses: 060H to 06FH, 3B0H to 3BBH, 3BFH to 3DFH
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 81H.