Siemens Simatic PG 740 Manual page 93

Hardware Information
Table 7-2
Address
from
0000
0020
002E
0040
0060
0061
0063
0064
0070
0071
0080
7 00A0
00B2
00C0
00F0
0100
0170
01F0
0200
0278
02F0
02F8
0300
0320
0340
0360
0370
0376
0377
0378
0380
03A0
03B0
03BC
03C0
7-4
I/O Address Assignments
Size
to Byte
000F 16 PiiX DMA 1
0021 2 PiiX PIC 1 (interrupt controller)
002F 2 Configuration port Ultra I/O
0043 4 PiiX Timer1 (SW
clock/refresh/speaker)
0060 1 Keyboard controller date
0061 1 PiiX NMI, speaker control
0063 1 Write-only PG configuration port
0064 1 Keyboard controller CMD/STATUS
0070 1 PiiX NMI enable, RTC index
0071 1 RTC date
008F 16 PiiX DMA page register
00A1 2 PiiX PIC2 interrupt controller
00B3 2 PiiX power management control, status
00DE 31 PiiX DMA 2
00F0 1 Reset numeric error
010F 16 Not used
0177 8 Secondary IDE channel
01F7 8 Primary IDE channel
020F 16 Game I/O expansion card
027B 4 LPT 2 not used
02F7 8 GBIP adapter expansion card
02FF 8 COM 2
031F 32 Programming equipment can be
switched off in SETUP
033F 32 Not used
035F 8 HighGraph (CPU) host interface
expansion card
036F 16 PC-Net expansion card
037F 16
0376 1 Second IDE command
0377 1 Second IDE status
037F 8 LPT 1
038F 16 SDLC 2 expansion card
03AF 16 SDLC 1 expansion card
03BB 12 B/W monitor interface/VGA
03BF 4 LPT x not used
03CF 16 VGA control register
Function
Basic Function
Otherwise vacant
Otherwise vacant
Then vacant
(XT hard disk), SCSI adapter
(AHA1540B)
Otherwise vacant
Otherwise vacant
Floppy 2 not used
Otherwise vacant
Otherwise vacant
Not used
Possible Alternative Function
Programming Device PG 740
C79000-G7076-C742-01