TIARA COMPUTER SYSTEMS, INC. ARCNET LanCard AT NIC Type ARCnet Transfer Rate 2.5Mbps Data Bus 16-bit ISA Topology Star Linear Bus Wiring Type Shielded twisted pair Unshielded twisted pair RG-58A/U 50ohm coaxial Boot ROM Available [Image] NODE ADDRESS Node SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 0 - - - - - - - - 1 Off Off Off Off Off Off Off On 2 Off Off Off Off Off Off On Off 3 Off Off Off Off Off Off On On 4 Off Off Off Off Off On Off Off 251 On On On On On Off On On 252 On On On On On On Off Off 253 On On On On On On Off On 254 On On On On On On On Off 255 On On On On On On On On 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 8 is the Least Significant Bit and switch 1 is the Most Significant Bit. The switches have the following decimal values: switch 8=1, 7=2, 6=4, 5=8, 4=16, 3=32, 2=64, 1=128. Turn on the switches and add the values of the on switches to obtain the correct node address. (On=1, Off=0) CABLE TYPE Type JP7 & JP8 » RG-58A/U 50ohm coaxial Pins 1 & 2 closed Shielded/Unshielded twisted pair Pins 2 & 3 closed TOPOLOGY CONFIGURATION Topology JP9 » Linear Bus Open Star Closed RIM BUFFER ADDRESS/BOOT ROM ADDRESS CONFIGURATION Buffer Boot JPA JPB JPC JPD JPE ROM CCOOh CE00h Closed Closed Closed Open Closed » D000h D200h Closed Closed Open Open Closed D400h D600h Closed Closed Closed Closed Open D800h DA00h Closed Closed Open Closed Open DC00h DE00h Closed Closed Closed Open Open E000h E200h Closed Closed Open Open Open I/O BASE ADDRESS Address JPF JPG JPH » 2E0h Closed Open Closed 260h Closed Closed Closed 290h Open Closed Closed 2F0h Open Open Closed 300h Closed Closed Open 350h Open Closed Open 380h Closed Open Open 3E0h Open Open Open INTERRUPT REQUEST IRQ JPI JPJ JPK JPL JPM JPN JPO JPP JPQ » 2/9 Open Open Open Open Closed Open Open Open Open 3 Open Open Open Open Open Closed Open Open Open 4 Open Open Open Open Open Open Closed Open Open 5 Open Open Open Open Open Open Open Closed Open 7 Open Open Open Open Open Open Open Open Closed 10 Open Open Open Closed Open Open Open Open Open 11 Open Open Closed Open Open Open Open Open Open 12 Open Closed Open Open Open Open Open Open Open 15 Closed Open Open Open Open Open Open Open Open I/O OPTION CONFIGURATION I/O CHRDY Zero Wait State JPR JPS Disabled Disabled Open Open Disabled Enabled Closed Open Enabled Disabled Open Closed Note:Zero wait state operation and I/O CHRDY signal cannot be enabled at the same time. DIAGNOSTIC LED(S) LED Color Status Condition L1 Red On Data is being received L1 Red Off Data is not being received L1 Red Blinking Card is reconfiguring L2 Green On Data is being transmitted L2 Green Off Data is not being transmitted L2 Green Blinking Card is reconfiguring