2-2
SIMATIC PC RI25/45, Technical Description
C79000-G7076-C808-01
2.1
Components
The following table lists the components of the motherboard and their
characteristics:
Components
Performance characteristics
Processor
Pentium 75/90/100/120/133 MHZ with integrated cooling unit in ZIF socket
Prepared for Pentium 150/166/200 MHZ
Processor upgrade
Socket 7
RI25/45PCS cache
RI45 cache
The cache module is optionally synchronous 256 kB/512 kB or asynchronous
(COACH compatible)
256 KB synchronous burst cache module (COACH compatible)
Memory
64 Bit, 4 SIMM sockets, uni/bilateral, Fast Page Mode or Extended Data Out (EDO).
Usable Modules:
8 MB (2*4MB module),
16 MB (2*8MB module),
32 MB (2*16MB module),
64 MB (2*32MB module),
128 MB (4*32MB module)
Pairs can be combined
EPROM
128kB flash
CMOS
114 Byte CMOS RAM with battery backup
Chipset
Intel Triton Chipset, NSC Super I/O PC87306
Graphics card
SVGA-LCD controller Cirrus GD7543 with Windows accelerator on PCI bus, 1MB
RAM with LCD up to 800x600/64 colors, with CRT up to 1024x768/72Hz/256
colors possible
IDE
PCI bus, EIDE interface with IO mode 4 for max. 4 drives
Floppy disk drive
2 drives 1.44 or 2.88 MBytes
Expansion slots
6 ISA (full length)
2 PCI (full length)
Keyboard
DIN port with adapter cable for PS2 keyboard, keyboards with integrated trackball
are compatible.
Mouse
PS2 mouse port
Serial port
2 x V24 ports
Parallel port
Standard, EPP, and ECP mode
MPI
Multipoint interface for SIMATIC S7
Performance
Characteristics
Motherboard