Siemens Simatic PG 740 - Page 94

7
7-5
Programming Device PG 740
C79000-G7076-C742-01
Table 7-2 I/O Address Assignments, continued
Address
Size
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Function
ÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁ
from to Byte
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Basic Function
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Possible Alternative Function
03D0 03DF 16
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
CGA/VGA control register
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
03E0 03E1 2 PCMCIA-controller
can be switched off in SETUP
Then vacant
03E8 03EF 2 COM 3 not used
03F0 03F5 6 Floppy 1 on board
03F6 03F6 1 Primary IDE-command
03F7 03F7 1 Primary IDE-status / Floppy Chg.
03F8 03FF 8 COM 1 / TTY
04D0 04D1 2 PiiX PIC 1,2 Interrupt controller
edge/level control
0778 077A 3 ECP LPT1
0CF8 0CFB 4 PCI config index (TSC) 0CF9h PiiX CPU System Reset
0CFC 0CFF 4 PCI config data (TSC)
FCF0 FCF2 2 Bus master interface primary IDE
register
Command & Status
FCF4 FCF7 4 Bus master interface primary IDE
Register
Memory descriptor table base address
FCF8 FCFA 2 Bus Master Interface prim.IDE register
Command & Status
FCFC FCFF 4 Bus master interface primary IDE
register
Memory descriptor table base address
Table 7-3 DMA Assignments
DMA Channel
Data Transfer Description
0 8 / 16 bits Vacant
1 8 / 16 bits Vacant
2 8 / 16 bits Floppy
3 8 / 16 bits Vacant
4 Cascading of DMA controllers
5 16 bits Vacant
6 16 bits Vacant
7 16 bits Vacant
Hardware Information