MB86967 Datasheet, PDF (82/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
A driver such as the one illustrated in this section might typically occupy 4 to 6 kilobytes on its distribution diskette.
The host-resident portion, when loaded for network operation, might use typically 2 to 3 kilobytes of host memory.
A set of quality software drivers bundled with the hardware is well worth providing to LAN equipment customers.
By providing better performance and reliability, good drivers will enhance both customer satisfaction and sales,
while reducing customer service calls.
Table 6 represents typical control and status parameter used in MB86967 Network Drivers.
Network ^Interrupt
ISR
Read Status
Registers
Report, clear and
process error
interrupts, if any
YES
RX PKT?
NO
Clear and mask
receive interrupts
Call or queue RX PKT
READ
YES
TX DONE?
Clear and mask transmit interrupts
Set TX STAT to Idle
Dual
TX MODE?
Call or queue
TX STARTUP
Single
Set TBUF STAT to Empty
Call or queue TX PKT WRITE
Retum from
interrupt
Figure 13 Network Interrupt Service Routine
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