I/O Address Assignment - Siemens SIMATIC Box PC 820 Manual

Motherboard
2.10 Hardware Addresses
2.10.1

I/O Address Assignment

Address Assignment
From To
0000 000F DMA controller 1
0020 0021 Interrupt controller 1
0040 0043 Timer 1
0060 0060 Keyboard controller, data
0061 0061 NMI, loudspeaker settings
0064 0064 Keyboard controller, command, status
0070 0070 NMI-enable, real-time clock index
0071 0071 Real-time clock date
0072 0073 CMOS external RAM
0080 008F DMA page register
00A0 00A1 Interrupt controller 2
00C0 00DE DMA controller 2
00EA 00EA PM-Port Ultra IO Index
00EB 00EB PM-Port Ultra IO Data
00ED 00ED reserved
00F0 00F0 Reset numeric error
00F8 00FF Numeric processor
0100 010F Generally not used (alternative for CP
1413)
0170 0177 Second IDE channel
01F0 01F7 First IDE channel
0200 020F Reserved for game port, otherwise vacant Reserved / vacant
0220 022F Reserved (Sound)
0240 0243 Reserved for SINEC L2 (5412(A2)),
otherwise vacant
0278 027B Reserved for LPT 2, otherwise vacant
02E8 02EF Reserved for COM4, otherwise vacant
02F0 02F8 Reserved for BGIP
02F8 02FF COM2
0300 031F Vacant
0330 033F Reserved (Sound)
0340 035F Reserved for HIGRAPH Host interface,
otherwise vacant
0360 036F Generally not used
2-30
Remark
Can be switched off
Can be switched off
Reserved / vacant
Reserved / vacant
Reserved / vacant
Reserved / vacant
Can be switched off
Vacant
Reserved / vacant
Vacant
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03