Specifications

Interrupt Controller (V40)
IIW4
Figure 8-6 shows the architecture for IIW4. IIW1 must be pro-
grammed with a logical 1 in the II4 bit if IIW4 is used. A logical
1 in the SFI bit enables the Self Finish Interrupt and a logical 0
disables it. The interrupt service routine must include an EOI
command when the Self Finish Interrupt is disabled.
IIW4
Address: Base + 1
Access: Write
76543210
1SFI
Self Finish Interrupt
0 Finish interrupt
1 Self finish interrupt
——0000
Figure 8–6. Interrupt Initialization Word 4.
8-11