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FD850MEX (CDXT003FD)

NEC TECHNOLOGIES, INC.

FD850MEX (CDXT003FD)

Card Type

Hard drive controller

Hard Drives supported

Up to 7 SCSI devices

Floppy drives supported

None

Data Bus

8-bit ISA

Card Size

Half-length, full-height

CONNECTIONS

Function

Label

Function

Label

50-pin SCSI connector - internal

J2

25-pin SCSI connector - external

P1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Zero wait state disabled

W5

Open

 

Zero wait state enabled

W5

Closed

MEMORY ADDRESS SELECTION

Setting

W1

W2

W3

CA000h

Open

Open

Pins 1 & 2, 3 & 4 closed

 

C8000h

Closed

Open

Pins 1 & 2, 3 & 4 closed

 

CE000h

Open

Closed

Pins 1 & 2, 3 & 4 closed

 

DE000h

Closed

Closed

Pins 1 & 2, 3 & 4 closed

 

E8000h

Open

Open

Pins 1 & 3, 2 & 4 closed

 

EC000h

Open

Closed

Pins 1 & 3, 2 & 4 closed

INTERRUPT SELECTION

Setting

W6(pins 1 & 2)

W7(pins 2 & 3)

IRQ3

Closed

Open

IRQ5

Open

Closed