Siemens SIMATIC PANEL PC 877 - Manual (Page 224)

Detailed descriptions
17.5 System resources
SIMATIC Panel PC 877
17-32
Operating instructions, Release 07/2006, A5E00877780-01
17.5.2 System resources used by the BIOS/DOS
The following table describes the system resources for the factory state of the device.
17.5.2.1 I/O address allocation
I/O address (hex) Size
(bytes)
Description of the basic function Possible alternative
function
from to
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 138 Motherboard resources
0081 008F 15 DMA controller
0090 009F 16 Motherboard resources
00A0 00A1 2 Programmable interrupt controller
00A2 00BF 30 Motherboard resources
00C0 00DF 32 DMA controller
00E0 00EF 16 Motherboard resources
00F0 00FE 15 Numeric data processor
0100 016F 112 Unused
0170 0177 8 Secondary EIDE channel
0178 01EF 120 Unused
01F0 01F7 8 Primary EIDE channel Switchable in Setup, then
free
01F8 01FF 116 Unused
0200 0273 16 Reserved for game port
0274 0277 4 ISA PNP Read Data Port
0279 0279 4 ISA PNP Read Data Port
027C 02E7 108 Unused