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 [Image] 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.