Specifications

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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