VSBC-6862
Rev 1.43
106
VHIL
VME interrupt Handler: Interrupt Level
RO
CS4 + $1061
This register indicates the current VME interrupt level to acknowledge by reading the
corresponding VHV register.
D8
D9
D10
D11
D12
D13
D14
D15
Value
x IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 IRQ2 IRQ1
Default
x x x x x x x x
With:
IRQ1:
VME interrupt request level 1
...
...
IRQ7:
VME interrupt request level 7
This register always indicates the current VME IRQ Level, even masked
interrupts.
VHM
VME interrupt Handler Mask
RW
CS4 + $1063
This register is used to mask incoming interrupt requests coming from VME bus.
D8
D9
D10
D11
D12
D13
D14
D15
Value
x M7 M6 M5 M4 M3 M2 M1
Default
x 1 1 1 1 1 1 1
With:
Mx
Interrupt Mask
0
IRQx is enabled
1
IRQx is masked
When an IRQ is masked:
- no local IRQ is generated to the MPC8260.
- reading the corresponding VHV register does not acknowledge the VME IRQ
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