CNET TECHNOLOGY, INC.
CN120TP
NIC Type | ARCnet |
Transfer Rate | 2.5Mbps |
Data Bus | 8-bit ISA |
Topology | Star |
Wiring Type | Unshielded twisted pair |
Boot ROM | Available |
NODE ADDRESS | ||||||||
Node | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 | SW2/7 | SW2/8 |
0 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
1 | On | Off | Off | Off | Off | Off | Off | Off |
2 | Off | On | Off | Off | Off | Off | Off | Off |
3 | On | On | Off | Off | Off | Off | Off | Off |
4 | Off | Off | On | Off | Off | Off | Off | Off |
251 | On | On | Off | On | On | On | On | On |
252 | Off | Off | On | On | On | On | On | On |
253 | On | Off | On | On | On | On | On | On |
254 | Off | On | On | On | On | On | On | On |
255 | On | On | On | On | On | On | On | On |
Note:Node address 0 is used for messaging between nodes and must not be used. A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 1=1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. Turn on the switches and add the values of the on switches to obtain the correct node address. (On=1, Off=0) |
BOOT ROM | ||
Setting | JP1 | |
» | Disabled | Open |
Enabled | Closed |
ONBOARD TERMINATOR | ||
Setting | JP4 | |
» | Disabled | Pins 2 & 3 closed |
Enabled | Pins 1 & 2 closed |
INTERRUPT SELECTION | |
IRQ | JP2 |
2/9 | Pins 9 & 10 closed |
3 | Pins 7 & 8 closed |
4 | Pins 5 & 6 closed |
5 | Pins 3 & 4 closed |
7 | Pins 1 & 2 closed |
BASE MEMORY ADDRESS & BOOT ROM ADDRESS | |||||||
Base Address | Boot ROM Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | |
C0000h | C2000h | On | On | On | On | On | |
C4000h | C6000h | On | On | Off | On | On | |
CC000h | CE000h | On | On | On | Off | On | |
» | D0000h | D2000h | On | On | Off | Off | On |
D4000h | D6000h | On | On | On | On | Off | |
D8000h | DA000h | On | On | Off | On | Off | |
DC000h | DE000h | On | On | On | Off | On | |
E0000h | E2000h | On | On | Off | Off | Off |
I/O BASE ADDRESS | ||||
Address | SW1/6 | SW1/7 | SW1/8 | |
260h | On | On | On | |
290h | Off | On | On | |
» | 2E0h | On | Off | On |
2F0h | Off | Off | On | |
300h | On | On | Off | |
350h | Off | On | Off | |
380h | On | Off | Off | |
3E0h | Off | Off | Off |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Red | Off | Power is not on |
LED1 | Red | Blinking | Network error |
LED1 | Red | On | Power is on |
LED2 | Green | Off | Data is not being transmitted/received |
LED2 | Green | On | Data is being transmitted/received |