UNIDENTIFIED B-666 NIC Type ARCnet Network Transfer Rate 2.5Mbps Data Bus 8-bit ISA Topology Star Wiring Type RG-62A/U 93ohm coaxial RG-58A/U 50ohm coaxial Boot ROM Available [Image] CONNECTIONS Function Label Function Label RG-58A/U 50ohm coaxial CN1 RG-62A/U 93ohm coaxial CN2 USER CONFIGURABLE SETTINGS Function Label Position Boot ROM enabled JP1 Closed Boot ROM disabled JP1 Open STATION NODE ADDRESS SELECTION Node 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 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. Turn off the switches and add the values of the switches to obtain the correct memory address. ROM ADDRESS SELECTION Address PROM Address SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 C:0000-C:07FFh C:2000-C:3FFFh On On On On On C:0800-C:0FFFh C:2000-C:3FFFh Off On On On On C:1000-C:17FFh C:2000-C:3FFFh On Off On On On C:1800-C:1FFFh C:2000-C:3FFFh Off Off On On On C:4000-C:47FFh C:6000-C:7FFFh On On Off On On C:4800-C:4FFFh C:6000-C:7FFFh Off On Off On On C:5000-C:57FFh C:6000-C:7FFFh On Off Off On On C:5800-C:5FFFh C:6000-C:7FFFh Off Off Off On On C:C000-C:C7FFh C:E000-C:FFFFh On On On Off On C:C800-C:CFFFh C:E000-C:FFFFh Off On On Off On C:D000-C:D7FFh C:E000-C:FFFFh On Off On Off On C:D800-C:DFFFh C:E000-C:FFFFh Off Off On Off On D:0000-D:07FFh D:2000-D:3FFFh On On Off Off On D:0800-D:0FFFh D:2000-D:3FFFh Off On Off Off On D:1000-D:17FFh D:2000-D:3FFFh On Off Off Off On D:1800-D:1FFFh D:2000-D:3FFFh Off Off Off Off On D:4000-D:47FFh D:6000-D:7FFFh On On On On Off D:4800-D:4FFFh D:6000-D7FFFh Off On On On Off D:5000-D:57FFh D:6000-D:7FFFh On Off On On Off D:5800-D:5FFFh D:6000-D:7FFFh Off Off On On Off D:8000-D:87FFh D:A000-D:BFFFh On On Off On Off D:8800-D:8FFFh D:A000-D:BFFFh Off On Off On Off D:9000-D:97FFh D:A000-D:BFFFh On Off Off On Off D:9800-D:9FFFh D:A000-D:BFFFh Off Off Off On Off D:C000-D:C7FFh D:E000-D:FFFFh On On On Off Off D:C800-D:CFFFh D:E000-D:FFFFh Off On On Off Off D:D000-D:D7FFh D:E000-D:FFFFh On Off On Off Off D:D800-D:DFFFh D:E000-D:FFFFh Off Off On Off Off E:0000-E:07FFh E:2000-E:3FFFh On On Off Off Off E:0800-E:0FFFh E:2000-E:3FFFh Off On Off Off Off E:1000-E17FFh E:2000-E:3FFFh On Off Off Off Off E:1800-E:1FFFh E:2000-E:3FFFh Off Off Off Off Off BASE I/O ADDRESS SELECTION Setting SW1/6 SW1/7 SW1/8 260-26Fh On On On 290-29Fh Off On On 2E0-2EFh On Off 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 MISCELLANEOUS TECHNICAL NOTES Note: Jumper JP2 sets the interrupt line, however the exact configuration is unidentified. The purpose of jumper JP3 is unidentified.