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TMC-875, TMC-885

FUTURE DOMAIN CORPORATION

TMC-875, TMC-885

Data bus: 8-bit, ISA (extension card-edge may be present, but is not active)

Size: Full-length, full-height card

Hard drives supported: Up to seven SCSI devices

Floppy drives supported: Four 360KB, 720KB, 1.2MB, or 1.44MB drives

Sector interleave: 1:1

CONNECTIONS

Function

Location

25-pin SCSI connector-external

J1

50-pin SCSI connector-internal

J2

34-pin control cable connector-floppy drives 1 and 2

J3

34-pin data cable connector-floppy drives 3 and 4

J4

4-pin connector-drive active LED

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive port address 3F2-3F7h, IRQ6

F1

open

 

Floppy drive port address 372-377h, IRQ5*

F1

closed

Hard Drive port address emulation enabled

F2

open

 

Hard drive port address emulation disabled (This is

used if another hard drive controller is present)

F2

closed

Zero Wait State disabled

W5

open

 

Zero Wait State enabled

W5

closed

Note:* If this setting is used the Hard Drive IRQ must be changed

BIOS ADDRESS

Address

W1

W2

CA00h

open

open

 

C800h

open

closed

 

CE00h

closed

open

 

DE00h

closed

closed

HARD DRIVE IRQ

IRQ

W4/1

W4/2

W4/3

W4/4

W4/5

W4/6

W4/7

W4/8

 

IRQ3

closed

open

open

open

open

open

open

open

 

IRQ4

open

closed

open

open

open

open

open

open

IRQ5

open

open

closed

open

open

open

open

open

 

IRQ10

open

open

open

closed

open

open

open

open

 

IRQ11

open

open

open

open

closed

open

open

open

 

IRQ12

open

open

open

open

open

closed

open

open

 

IRQ14

open

open

open

open

open

open

closed

open

 

IRQ15

open

open

open

open

open

open

open

closed