WESTERN DIGITAL CORPORATION WD7000-ASC, WD7000-FASST Data bus: 16-bit, PC/AT Size: Full-length, full-height card Hard Drives Supported: Up to seven SCSI devices Floppy Drives Supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives [Image] CONNECTIONS Function Location 4-pin connector-drive active LED CN1 34-pin data cable connector-floppy drive CN2 50-pin SCSI connector-internal CN3 DB25 SCSI connector-external CN4 USER CONFIGURABLE SETTINGS Function Location Setting » Termination power enabled JP5 closed Termination power disabled JP5 open » Single-speed floppy supported JP7 open Dual-speed floppy supported JP7 closed » Write precompensation for floppy JP8 open is 125nsec. Write precompensation for floppy JP8 closed is 187nsec. FLOPPY DRIVE INTERRUPT REQUEST - JP1 IRQ Jumper 1 Jumper 2 Jumper 3 Jumper 4 Jumper 5 » Disabled open open open open open IRQ3 closed open open open open IRQ4 open closed open open open IRQ5 open open closed open open IRQ7 open open open closed open IRQ9 open open open open closed DMA INTERRUPT REQUEST - JP2 DRQ Jumpers 1 & 4 Jumpers 2 & 5 Jumpers 3 & 6 Disabled open open open DRQ/DACK7 closed open open » DRQ/DACK6 open closed open DRQ/DACK5 open open closed HARD DRIVE INTERRUPT REQUEST - JP2 IRQ Jumper 7 Jumper 8 Jumper 9 Jumper 10 Jumper 11 Disabled open open open open open IRQ15 closed open open open open IRQ14 open closed open open open IRQ12 open open closed open open IRQ11 open open open closed open IRQ10 open open open open closed FLOPPY CONTROLLER SETTINGS Function JP6 JP9 » Floppy drive enabled with no open open hard or combo card Floppy drive enabled with hard open closed card only Floppy drive disabled closed N/A I/O PORT ADDRESS - JP3 Address Jumper 1 Jumper 2 Jumper 3 Jumper 4 Jumper 5 3F8h open open open open open 3F0h closed open open open open 3E8h open closed open open open 3E0h closed closed open open open 3D8h open open closed open open 3D0h closed open closed open open 3C8h open closed closed open open 3C0h closed closed closed open open 3B8h open open open closed open 3B0h closed open open closed open 3A8h open closed open closed open 3A0h closed closed open closed open 398h open open closed closed open 390h closed open closed closed open 388h open closed closed closed open 380h closed closed closed closed open 378h open open open open closed 370h closed open open open closed 368h open closed open open closed 360h closed closed open open closed 358h open open closed open closed 350h closed open closed open closed 348h open closed closed open closed 340h closed closed closed open closed 338h open open open closed closed 330h closed open open closed closed 328h open closed open closed closed » 320h closed closed open closed closed 318h open open closed closed closed 310h closed open closed closed closed 308h open closed closed closed closed 300h closed closed closed closed closed BIOS ADDRESS - JP4 Address Jumper 1 Jumper 2 Jumper 3 Jumper 4 DE00h open open open open DC00h closed open open open DA00h open closed open open » D800h closed closed open open D600h open open closed open D400h closed open closed open D2OOh open closed closed open D000h closed closed closed open CE00h open open open closed CC00h closed open open closed CA00h open closed open closed C800h closed closed open closed C600h open open closed closed C400h closed open closed closed C200h open closed closed closed C000h closed closed closed closed