3com 3C319 Manuale Utente

C

HAPTER

 5: C

ONFIGURING

 

THE

 NIC M

ANUALLY

3Com mode increases the number of available IRQ 
channels from 4 to 8 and the number of I/O base 
addresses from 2 to 31. You can install up to six 3C319 
NICs per PC. 3Com drivers are supplied on the TokenDisk 
diskettes to support these 3Com mode enhancements. 
The default is 3Com mode.

IBM mode provides the same configuration options as 
IBM 16/4 Token Ring Adapters: 4 IRQ channels and 2 I/O 
base addresses. You can continue to use IBM drivers with 
the NIC in IBM mode.

The 3C319 NIC operates at a ring speed of either 
4 or 16 Mbps. The 3C319 NIC ring speed must match the 
speed of the token ring network. The default value is 
16 Mbps. For the NDIS 4 driver, the auto ring speed 
detection feature is enabled by default. (To disable the 
auto ring speed detection feature, see 

In IBM mode when only one 3C319 NIC is installed, it is 
designated the Primary NIC. Change the Primary/Alternate 
option with the Configuration and Diagnostic Program. 
The base address allowed in IBM mode is A20h (primary) 
or A24h (alternate). The default is A20h.

In 3Com mode the I/O base addresses designate the 
NICs. The I/O base addresses for 3Com mode are as 
follows, with the default address in bold:

280h

300h

380h

A24h

290h

310h

390h 

210h

2A0h

320h

3A0h 

220h

2B0h

330h

3B0h 

230h

2C0h

340h

3C0h 

240h

2D0h

350h

3D0h 

250h

2E0h

360h

3E0h 

260h

2F0h

370h