DEC Digital Alpha VME 4/224 User Manual page 267

DMASICR
Bits 2-0 Local IPL setting for end of DMA interrupt.
Bits 6-3 Reserved, must read as 1s.
Bit 7 End of DMA interrupt mask bit.
LICR1-7
Bits 2-0 Local IPL setting for LIRQ interrupt line.
Bit 3 Indicates voltage level at LIRQ pin.
Bit 4 Autovector enable. Must be set in the Digital Alpha VME 4 system.
Bit 5 Edge/level enable for LICR2 and LICR7. Must be clear in the Digital
Alpha VME 4 system.
Bit 6 Polarity set for LICR2 and LICR7. Must be clear in Digital Alpha VME
4.
Bit 7 Local interrupt mask bit.
ICGSICR
Bits 2-0 Local IPL for global switch interrupts.
Bit 3 Reserved, must read as 1.
Bits 7-4 Interrupt mask bit for ICGS <3:0>.
ICMSICR
Bits 2-0 Local IPL for module switch interrupts.
Bit 3 Reserved, must read as 1.
Bits 7-4 Interrupt mask bit for ICMS <3:0>.
EGICR
Bits 2-0 Local IPL for error group interrupts.
Bit 3 SYSFAIL asserted (read only).
Bit 4 SYSFAIL interrupt mask.
Bit 5 Arbitration timeout interrupt mask.
Bit 6 VIC/CY write post fail interrupt mask.
Bit 7 AC fail interrupt mask.
ICGSIVBR
Bits 1-0 Read only.
Bits 7-2 User defined. Combines with ICGS switch number to provide vector.
ICMSIVBR
Bits 1-0 Read only.
VME Interface 10–33