HP 9000 V2600 SCA - Manual (Page 119)

Chapter 5 97
Configuration utilities
SSP-to-system communications
SSP-to-system communications
Figure 56 depicts the V-Class server to SSP communications using
HP-UX.
Figure 56 SSP-to-system communications
A layer of firmware between HP-UX and OBP (Open Boot PROM) called
spp_pdc allows the HP-UX kernel to communicate with OBP. spp_pdc
is platform-dependent code and runs on top of OBP providing access to
the devices and OBP configuration properties.
ethernet
DUART
HPUX
ethernet
Scan
console
NFS-FWCP
modem
remote diagnostic
RS-232
ccmd
event_logger
hard_logger
sppconsole
ttylink
LCD
OBP
POST
/test controller
console messages/LCD
Global LAN
global ethernet
Private LAN
private ethernet
RS-232
JTAG FW
ethernet
console messages
memlog syslog
Cabinet
pciromldr
SSP
PCI
console
spp_pdc messages
consolelogx
JTAG
ccmd
Test AUI
Core AUI
RS-232A
fwcp/nfs