82374EB Datasheet, PDF (174/208 Pages) Intel Corporation – SYSTEM COMPONENT (ESC)

82374EB 82374SB
Cycle
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Table 33 Lowest Priority without Focus Processor Message (Continued)
Bit 1
Bit 0
P7
0
Inverted Processor Priority P7 – P0
P6
0
P5
0
P4
0
P3
0
P2
0
P1
0
P0
0
ArbID3
0
Arbitration ID 3 -0
ArbID2
0
ArbID1
0
ArbID0
0
S
S
Status (10 means status OK all other values indicate an error)
0
0
Idle
Remote Read Message
The Remote Read Message (Table 34) is used for a local APIC to read the register in another local APIC The
message format is the same as the Short Message for the first 20 cycles
Cycles 21 through 36 contain the Remote Register data The status information in cycle 37 specifies if the data
is good or not The Remote Read Message is always successful in that it is never retried (although the data
may be valid or invalid) The reason is that the Remote Read Message is a debug feature and a ‘‘hung’’
remote APIC that is unable to respond should not cause the debugger to hang up
Cycle
1
2
3
4
5
6
7
8
Table 34 Remote Read Message
Bit 1
Bit 0
0
1
0 1 ^e normal 1 1 ^e EOI
ArbID3
0
Arbitration ID bits 3 through 0
ArbID2
0
ArbID1
0
ArbID0
0
DM
M2
DM ^e Destination mode
M1
M0
M2 – M0 ^e Delivery mode
L
TM
L ^e Level TM ^e Trigger Mode
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