Compaq AlphaServer ES40 - Page 386

D-28 Compaq AlphaServer ES40 Service Guide
Table D–10 21272-CA Cchip Miscellaneous Register Fields
(Continued)
Name Bits Type
Initial
State Description
IPINTR <11:8> R, W1C 0
Interprocessor interrupt
pending—one bit per CPU. Pin
irq<3> is asserted to the CPU
corresponding to a 1 in this
field.
ITINTR <7:4> R, W1C 0
Interval timer interrupt
pending—one bit per CPU. Pin
irq<2> is asserted to the CPU
corresponding to a 1 in this
field.
RES <3:2> MBZ, RAZ 0 Reserved.
CPUID <1:0> RO -
ID of the CPU performing the
read.