page 234/22/04
RX2600 consoles
MP Command Set
page 244/22/04
RX2600 consoles
Forcing a system crash
• History
– On VAX and early Alpha system, ^P was detected by
special hardware and handled by the console
– Commodity serial ports pushed ^P detection in
console firmware, if IPL < DEVICE_IPL
• EFI console ignores ^P, no way to return to EFI Shell
• IA64 VMS console terminal driver handles ^P
– Calls XDELTA, if loaded
– Prompts for forced crash, if IPL < DEVICE_IPL
• Remote console command generates Transfer of
Control signal (BMC:TOC, MP:TC)
– Handled by IA64 VMS as a non-maskable exception
and results in a crash dump regardless of IPL
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