COMPEX, INC.
A-NET-1 (VER. 1.0)
NIC Type | ArcNet |
Chip Set | NCR 90C26 |
Data Bus | 8-bit ISA |
Network Transfer Rate | 2.5Mbps |
Topology | Star |
Wiring Type | RG-62A/U 93ohm coaxial |
Boot ROM | Available |

CONNECTIONS | |
Function | Label |
RG-62A/U 93ohm coaxial cable | CN1 |
EXTENDED RANGE CONFIGURATION | |||
Response Time | Recon Time | JP1 | JP2 |
75.7 uS | 840 mS | Open | Open |
283.4 uS | 1.68 S | Closed | Open |
561.8 uS | 1.68 S | Open | Closed |
1.1186 mS | 1.68 S | Closed | Closed |
Note:This setting should only be changed when the length of the ArcNet segments exceed 6000 meters. | |||
NODE ADDRESS | ||||||||
Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
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 |
5 | On | Off | On | Off | Off | Off | Off | Off |
250 | Off | On | Off | On | On | On | On | On |
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 |
Note: A total of 253 node address settings are available. The switches are a binary representation of the decimal node addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=128, SW1/7=64, SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off the switches and add the values of the switches that are off to obtain the correct node address. (Off=1, On=0)Addresses 0 and 255 are reserved and should not be used. | ||||||||
BASE I/O ADDRESS | |||||||
Setting | JP4/A | JP4/B | JP4/C | JP4/D | JP4/E | JP4/F | |
000h | Open | Open | Open | Open | Open | Open | |
010h | Closed | Open | Open | Open | Open | Open | |
020h | Open | Closed | Open | Open | Open | Open | |
030h | Closed | Closed | Open | Open | Open | Open | |
040h | Open | Open | Closed | Open | Open | Open | |
3B0h | Closed | Closed | Open | Closed | Closed | Closed | |
3C0h | Open | Open | Closed | Closed | Closed | Closed | |
3D0h | Closed | Open | Closed | Closed | Closed | Closed | |
| » | 3E0h | Open | Closed | Closed | Closed | Closed | Closed |
3F0h | Closed | Closed | Closed | Closed | Closed | Closed | |
Note: A total of 64 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP4/A is the Least Significant Bit and jumper JP4/F is the Most Significant Bit. The jumpers have the following decimal values: JP4/F=512, JP4/E=256, JP4/D=128, JP4/C=64, JP4/B=32, JP4/A=16. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0) | |||||||
SHARED RAM ADDRESS | ||||||
Setting | JP5/A | JP5/B | JP5/C | JP5/D | JP5/E | |
00000h | Open | Open | Open | Open | Open | |
08000h | Closed | Open | Open | Open | Open | |
10000h | Open | Closed | Open | Open | Open | |
18000h | Closed | Closed | Open | Open | Open | |
20000h | Open | Open | Closed | Open | Open | |
| » | D0000h | Closed | Open | Closed | Open | Open |
D8000h | Closed | Closed | Open | Closed | Closed | |
E0000h | Open | Open | Closed | Closed | Closed | |
E8000h | Closed | Open | Closed | Closed | Closed | |
F0000h | Open | Closed | Closed | Closed | Closed | |
F8000h | Closed | Closed | Closed | Closed | Closed | |
Note: A total of 32 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP5/A is the Least Significant Bit and jumper JP5/F is the Most Significant Bit. The jumpers have the following decimal values: JP5/E=524288, JP5/D=262144, JP5/C=131072, JP5/B=65536, JP5/A=32768. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0) | ||||||
INTERRUPT | |||||
Setting | JP3/A | JP3/B | JP3/C | JP3/D | JP3/E |
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 |
DIAGNOSTIC LED(S) |
The color and function of the LED is unidentified. |