EVEREX SYSTEMS, INC. EV-390 Data bus: 8-bit, ISA Size: Full-length, full-height card Hard drive supported: Two MFM ST506/412 drives Floppy drives supported: Four 360KB drives [Image] CONNECTIONS Function Location 34-pin control cable connector - hard drive J1 20-pin data cable connector - drive 1 J2 20-pin data cable connector - drive 2 J3 37-pin external drive connector J4 34-pin control cable connector - floppy drive 1 J5 34-pin control cable connector - floppy drive 0 J6 USER CONFIGURABLE SETTINGS Function Location Setting » Floppy drives enabled W10 Closed Floppy drives disabled W10 Open » Factory configured - do not SW1/jumper 5 N/A alter » Factory configured - do not SW1/jumper 6 N/A alter » Factory configured - do not SW1/jumper 7 N/A alter » Factory configured - do not SW1/jumper 8 N/A alter 3.92A/3.93 EPROM CHIP DRIVE FORMATS - SW1 Capacity Heads Cylinders Drive 1 Drive 2 Jumper 3 Jumper 4 Jumper Jumper 1 2 10MB 4 306 Open Open Open Open 10.7MB 2 615 Closed Open Closed Open 21.4MB 4 615 Open Closed Open Closed 31.9MB 5 733 Closed Closed Closed Closed 42.5MB 5 977 Closed Closed Closed Closed 3.94 EPROM CHIP DRIVE FORMATS - SW1 Capacity Heads Cylinders Drive 1 Drive 2 Jumper 3 Jumper 4 Jumper Jumper 1 2 10MB 4 306 Open Open Open Open 42MB 8 615 Closed Open Closed Open 21.4MB 4 615 Open Closed Open Closed 42.8MB 6 820 Closed Closed Closed Closed 3.95 EPROM CHIP DRIVE FORMATS - SW1 Capacity Heads Cylinders Drive 1 Drive 2 Jumper 3 Jumper 4 Jumper Jumper 1 2 80.2MB 9 1024 Open Open Open Open 42MB 8 615 Closed Open Closed Open 21.4MB 4 615 Open Closed Open Closed 42.8MB 6 820 Closed Closed Closed Closed 3.96 EPROM CHIP DRIVE FORMATS - SW1 Capacity Heads Cylinders Drive 1 Drive 2 Jumper 3 Jumper 4 Jumper Jumper 1 2 44.5MB 5 1024 Open Open Open Open 71.3MB 8 1024 Closed Open Closed Open 21.4MB 4 615 Open Closed Open Closed 31.9MB 5 733 Closed Closed Closed Closed 3.97 EPROM CHIP DRIVE FORMATS - SW1 Capacity Heads Cylinders Drive 1 Drive 2 Jumper 3 Jumper 4 Jumper Jumper 1 2 42.2MB 6 809 Open Open Open Open 10.7MB 2 615 Closed Open Closed Open 21.4MB 4 615 Open Closed Open Closed 31.9MB 5 733 Closed Closed Closed Closed 42.5MB 5 977 Closed Closed Closed Closed