User`s manual

INSTALLATIONS

MB770 User’s Manual

FDD1: Floppy Drive Connector

FDD1is a slim 26-pin connector and will support up to 2.88MB FDD.

Signal Name Pin # Pin # Signal Name

VCC 1 2 INDEX

VCC 3 4 DRV_SEL

VCC 5 6 DSK_CH

NC 7 8 NC

NC 9 10 MOTOR

DINST 11 12 DIR

NC 13 14 STEP

GND 15 16 WDATA

GND 17 18 WGATE

GND 19 20 TRACK

NC 21 22 WPROT

GND 23 24 RDATA

GND 25 26 SIDE

J2: Serial Ports

Pin # Signal Name (RS-232)

1 DCD, Data carrier detect

3 RXD, Receive data

5 TXD, Transmit data

7 DTR, Data terminal ready

9 Ground

2 DSR, Data set ready

4 RTS, Request to send

6 CTS, Clear to send

8 RI, Ring indicator

10 No Connect.