SMC Networks SMC91C95 - Manual (Page 75)

75
FIGURE 12 - RX INTR
RX INTR
Write Ad. Ptr. Reg. & Read
Word 0 from RAM
Destination
Multicast?
Read Words 2, 3, 4 from RAM
for Address Filtering
Address
Filtering Pass?
Status Word
OK?
Do Receive Lookahead
Get Copy Specs from Upper
Layer
Okay to
Copy?
Copy Data Per Upper Layer
Specs
Issue "Remove and Release"
Command
Return to ISR
Yes No
Yes No
No Yes
No Yes