STANDARD MICROSYSTEMS CORPORATION ARCNET PC500 NIC Type ARCnet Transfer Rate 2.5Mbps Data Bus 16-bit ISA Topology Star Linear Bus Wiring Type RG-62A/U 93ohm coaxial Boot ROM Not available [Image] NODE ADDRESS Node SW3/1 SW3/2 SW3/3 SW3/4 SW3/5 SW3/6 SW3/7 SW3/8 0 - - - - - - - - 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 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: 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 off the switches and add the values of the off switches to obtain the correct node address. (On=0, Off=1) RESPONSE & RECONFIGURATION TIMEOUTS Response Time Idle Time Reconfig. JP2A JP2B Time » 78µs 86µs 840ms Closed Closed 285µs 316µs 1680ms Closed Open 563µs 624µs 1680ms Open Closed 1190µs 1237µs 1680ms Open Open TOPOLOGY CONFIGURATION Topology JP6 Star Closed Linear Bus Open I/O BASE ADDRESS Address SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 » 300h On On On On Off Off 200h On On On On On Off 210h Off On On On On Off 220h On Off On On On Off 230h Off Off On On On Off 240h On On Off On On Off 250h Off On Off On On Off 260h On Off Off On On Off 270h Off Off Off On On Off 280h On On On Off On Off 290h Off On On Off On Off 2A0h On Off On Off On Off 2B0h Off Off On Off On Off 2C0h On On Off Off On Off 2D0h Off On Off Off On Off 2E0h On Off Off Off On Off 2F0h Off Off Off Off On Off 310h Off On On On Off Off 320h On Off On On Off Off 330h Off Off On On Off Off 340h On On Off On Off Off 350h Off On Off On Off Off 360h On Off Off On Off Off 370h Off Off Off On Off Off 380h On On On Off Off Off 390h Off On On Off Off Off 3A0h On Off On Off Off Off 3B0h Off Off On Off Off Off 3C0h On On Off Off Off Off 3D0h Off On Off Off Off Off 3E0h On Off Off Off Off Off 3F0h Off Off Off Off Off Off INTERRUPT REQUEST IRQ SW1/7 SW1/8 SW1/9 SW1/10 2/9 Off On On Off 3 Off Off On On 4 On On Off On 5 Off On Off On 7 Off Off Off On 10 On Off On Off 11 Off Off On Off 12 On On Off Off FACTORY CONFIGURED SETTINGS Switch Setting SW2/1 On SW2/2 On SW2/3 Off SW2/4 On SW2/5 On SW2/6 On DIAGNOSTIC LED(S) LED Color Status Condition LED1 Red On Card is being accessed by host computer LED1 Red Off Card is not being accessed by host computer LED2 Green On Data is being transmitted/received LED2 Green Off Data is not being transmitted/received LED2 Green Blinking Network is reconfiguring