AT-LAN-TEC, INC. 16-BIT TWISTED PAIR ARCNET NIC Type ARCnet Transfer Rate 2.5Mbps Data Bus 16-bit ISA Topology Linear bus Star Wiring Type Shielded Twisted Pair Unshielded Twisted Pair 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 On On On On On On On Off 2 On On On On On On Off On 3 On On On On On On Off Off 4 On On On On On Off On On 251 Off Off Off Off Off On Off Off 252 Off Off Off Off Off Off On On 253 Off Off Off Off Off Off On Off 254 Off Off Off Off Off Off Off On 255 Off Off Off Off Off Off Off Off Note:Node address 0 is reserved 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 most significant bit and switch 8 the least significant bit. The switches have the following decimal values: switch 1=128, switch 2=64, switch 3=32, switch 4=16, switch 5=8, switch 6=4, switch 7=2, switch 8=1. Turn Off the appropriate switches and add the values of the ‘off’ switches to obtain the correct node address. MEMORY ADDRESS SELECT RAM Address ROM Address SW2/4 SW2/5 SW2/6 SW2/7 SW2/8 C0000 - C2000 - On On On On On C07FFh C3FFFh C0800 - C2000 - Off On On On On C0FFFh C3FFFh C1000 - C2000 - On Off On On On C17FFh C3FFFh C1800 - C2000 - Off Off On On On C1FFFh C3FFFh C4000 - C6000 - On On Off On On C47FFh C7FFFh C4800 - C6000 - Off On Off On On C4FFFh C7FFFh C5000 - C6000 - On Off Off On On C57FFh C7FFFh C5800 - C6000 - Off Off On On On C5FFFh C7FFFh CC000 - CE000 - On On On Off On CC7FFh CFFFFh CC800 - CE000 - Off On On Off On CCFFFh CFFFFh CD000 - CE000 - On Off On Off On CD7FFh CFFFFh CD800 - CE000 - Off Off On Off On CDFFFh CFFFFh D0000 - D2000 - On On Off Off On D07FFh D3FFFh D0800 - D2000 - Off On Off Off On D0FFFh D3FFFh D1000 - D2000 - On Off Off Off On D17FFh D3FFFh D1800 - D2000 - Off Off Off Off On D1FFFh D3FFFh D4000 - D6000 - On On On On Off D47FFh D7FFFh D4800 - D6000 - Off On On On Off D4FFFh D7FFFh D5000 - D6000 - On Off On On Off D57FFh D7FFFh D5800 - D6000 - Off Off On On Off D5FFFh D7FFFh D8000 - DA000 - On On Off On Off D87FFh DBFFFh D8800 - DA000 - Off On Off On Off D8FFFh DBFFFh D9000 - DA000 - On Off Off On Off D97FFh DBFFFh D9800 - DA000 - Off Off Off On Off D9FFFh DBFFFh DC000 - DE000 - On On On Off On DC7FFh DFFFFh DC800 - DE000 - Off On On Off Off DCFFFh DFFFFh DD000 - DE000 - On Off On Off Off DD7FFh DFFFFh DD800 - DE000 - Off Off On Off Off DDFFFh DFFFFh E0000 - E2000 - On On Off Off Off E07FFh E3FFFh E0800 - E2000 - Off On Off Off Off E0FFFh E3FFFh E1000 - E2000 - On Off Off Off Off E17FFh E3FFFh E1800 - E2000 - Off Off Off Off Off E1FFFh E3FFFh TIMEOUT CONFIGURATION Response Time( m Reconfiguration J1/F J1/G Time(msec) » 78 840 Open Open 285 1680 Open Closed 563 1680 Closed Open 1130 1680 Closed Closed BOOT ROM Setting J1/H » Disabled Open Enabled Closed I/O ADDRESS SELECT Address SW2/1 SW2/2 SW2/3 » 2E0 - 2EFh On Off On 260 - 26Fh On On On 290 - 29Fh Off On On 2F0 - 2FFh Off Off On 300 - 30Fh On On Off 350 - 35Fh Off On Off 380 - 38Fh On Off Off 3E0 - 3EFh Off Off Off INTERRUPT SELECT IRQ J1/A J1/B J1/C J1/D J1/E » IRQ3 Open Closed Open Open Open IRQ2 Closed Open Open Open Open IRQ4 Open Open Closed Open Open IRQ5 Open Open Open Closed Open IRQ7 Open Open Open Open Closed