COMPEX, INC. ANET-4 (VER. 1.0) NIC Type ArcNet Chip Set NCR 90C26 Data Bus 8-bit ISA Network Transfer Rate 2.5Mbps x 4 Topology Star Wiring Type RG-62A/U 93ohm coaxial Boot ROM Available [Image] CONNECTIONS Function Label Function Label RG-62A/U 93ohm coaxial CN1 RG-62A/U 93ohm coaxial CN4 connector connector RG-62A/U 93ohm coaxial CN2 Daisy-chain connector J1 connector RG-62A/U 93ohm coaxial CN3 connector 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/E 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 MISCELLANEOUS TECHNICAL NOTE The daisy-chain connector may be used to connect up to three extender cards for a total of 12 ports. For additional information see document N1769.