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Hawk PCI Host Bridge & Multi-Processor Interrupt Controller
2
Spurious Vector RegisterVECTOR This vector is returned when the Interrupt Acknowledge register is read during a spurious vector fetch.Timer Frequency RegisterThis register is used to report the frequency (in Hz) of the clock s ource for the global timers. Following reset, this register contains zero. The system initialization code must initialize this registe r to one-eighth the MPIC clock frequency. For the PHB implementation of the MPIC, a typical value would be $7de290 (which is 66/8 MHz or 8.25 MHz).
Offset $010E0
Bit 3
13
02
92
82
72
62
52
42
32
22
12
01
91
81
71
61
51
41
31
21
11
09876543210
Name VECTOR
Operation RRRR/W
Reset $00 $00 $00 $FF
Offset $010F0
Bit 3
13
02
92
82
72
62
52
42
32
22
12
01
91
81
71
61
51
41
31
21
11
09876543210
Name TIMER FREQUENCY
Operation R/W
Reset $00000000