Operating instructions

Detailed descriptions
17.3 System resources
SIMATIC Panel PC 677B
204 Operating Instructions, 05/2007, A5E01035609-01
17.3 System resources
17.3.1 Currently allocated system resources
All system resources (hardware addresses, memory configuration, allocation of interrupts,
DMA channels) are assigned dynamically by the Windows OS, depending on the hardware
configuration, drivers and connected external devices. You can view the current
configuration of system resources or possible conflicts with the following operating systems:
Windows 2000/XP Start > Run : In the Open dialog, enter msinfo32 and confirm with OK
17.3.2 System resources used by the BIOS/DOS
The following table describes the system resources for the factory state of the device.
17.3.2.1 I/O address allocation
I/O address (hex)
from to
Size
(bytes)
Description of the basic function Possible alternative
function
0000 000F 16 DMA controller
0010 001F 16 Motherboard resources
0020 0021 2 Programmable interrupt controller
0022 003F 30 Motherboard resources
0040 0043 4 System timer
0044 005F 28 Motherboard resources
0060 0060 1 Keyboard controller
0061 0061 1 System loudspeaker
0062 0063 2 Motherboard resources
0064 0064 1 Keyboard controller
0067 006F 9 Motherboard resources
0070 0075 6 System CMOS/real-time clock
0076 0080 11 Motherboard resources
0081 008F 15 DMA controller
0090 009F 16 Motherboard resources