EARTHNET-1 Network Card Settings and Configuration
ALLOY COMPUTER PRODUCTS, INC.
EARTHNET-1
NIC Type | Arcnet |
Transfer Rate | 2.5Mbps |
Data Bus | 8-bit ISA |
Topology | Star |
Wiring Type | RG-62A/U 93ohm coaxial |
Boot ROM | Available |
NODE ADDRESS SELECTION | ||||||||
Address | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 | SW2/7 | SW2/8 |
1 | Off | On | On | On | On | On | On | On |
2 | On | Off | On | On | On | On | On | On |
3 | Off | Off | On | On | On | On | On | On |
4 | On | On | Off | On | On | On | On | On |
5 | Off | On | Off | On | On | On | On | On |
251 | Off | Off | On | Off | Off | Off | Off | Off |
252 | On | On | Off | Off | Off | Off | Off | Off |
253 | Off | On | Off | Off | Off | Off | Off | Off |
254 | On | Off | Off | Off | Off | Off | Off | Off |
255 | Off | Off | Off | Off | Off | Off | Off | Off |
Note: A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. switch SW2/1 is the Least Significant Bit and jumper SW2/8 is the Most Significant Bit. The switches have the following decimal values: jumper SW2/1=1, SW2/2=2, SW2/3=4, SW2/4=8, SW2/5=16, SW2/6=32, SW2/7=64, SW2/8=128.Open the switches and add the values of the open jumpers to obtain the correct node address. (On=0, Off=1) | ||||||||
BASE I/O ADDRESS SELECTION | |||||||
Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | |
» | 2E0h | Off | Off | Off | Off | Off | On |
200h | Off | On | On | On | On | On | |
210h | Off | On | On | On | On | Off | |
220h | Off | On | On | On | Off | On | |
230h | Off | On | On | On | Off | Off | |
240h | Off | On | On | Off | On | On | |
3B0h | Off | Off | Off | On | Off | Off | |
3C0h | Off | Off | Off | Off | On | On | |
3D0h | Off | Off | Off | Off | On | Off | |
3E0h | Off | Off | Off | Off | Off | On | |
3F0h | Off | Off | Off | Off | Off | Off | |
Note: Addresses from 0h to 3F0h are possible, but those below 200h are not normally used. The sum of SW1/1 and SW1/2 represent the first digit. The sum of SW1/3-6 represent the second digit. The last digit is always zero. SW1/1=200h, SW1/2=100h, SW1/3=80h, SW1/4=40h, SW1/5=20h, SW/6=10h. | |||||||
INTERRUPT SELECTION | ||||||
IRQ | JP2/1 | JP2/2 | JP2/3 | JP2/4 | JP2/5 | |
» | 2 | Closed | Open | Open | Open | Open |
3 | Open | Closed | Open | Open | Open | |
4 | Open | Open | Closed | Open | Open | |
5 | Open | Open | Open | Closed | Open | |
7 | Open | Open | Open | Open | Closed | |
SHARED RAM ADDRESS | ||||||||
Address | SW1/7 | SW1/8 | SW1/9 | SW1/10 | JP1/1 | JP1/2 | JP1/3 | JP1/4 |
A0000h | Off | On | Off | On | Open | Open | Open | Open |
A4000h | Off | On | Off | On | Open | Open | Closed | Open |
A8000h | Off | On | Off | On | Open | Open | Open | Closed |
B0000h | Off | On | Off | Off | Open | Open | Open | Open |
B4000h | Off | On | Off | Off | Open | Open | Closed | Open |
B8000h | Off | On | Off | Off | Open | Open | Open | Closed |
C0000h | Off | Off | On | On | Open | Open | Open | Open |
C4000h | Off | Off | On | On | Open | Open | Closed | Open |
C8000h | Off | Off | On | On | Open | Open | Open | Closed |
D0000h | Off | Off | On | Off | Open | Open | Open | Open |
D4000h | Off | Off | On | Off | Open | Open | Closed | Open |
D8000h | Off | Off | On | Off | Open | Open | Open | Closed |
E0000h | Off | Off | Off | On | Open | Open | Open | Open |
E4000h | Off | Off | Off | On | Open | Open | Closed | Open |
E8000h | Off | Off | Off | On | Open | Open | Open | Closed |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Unidentified | On | Data is being transmitted/received |
LED1 | Unidentified | Off | Data is not being transmitted/received |
LED2 | Unidentified | On | Network connection is good |
LED2 | Unidentified | Off | Network connection is broken |
Note: Continuous pulsing of LED2 indicates network error or node address conflict. | |||
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