Specifications

46 MA6

15 Ground 32 Select Head

16 Motor Enable 2 33 Ground

17 Ground 34 /DCHNG

Printer Port Connector

This 25-pin connector provides parallel printer data and control signals to and from the SBC board.

Figure A-5. Printer Port Connector

Pin Description Pin Description

1 -Strobe 10 -Acknowledge

2 +Data Bit 0 11 +Busy

3 +Data Bit 1 12 +Paper End

4 +Data Bit 2 13 +Select

5 +Data Bit 3 14 -Auto Feed

6 +Data Bit 4 15 -Error

7 +Data Bit 5 16 -Initialize Printer

8 +Data Bit 6 17 -Select Input

9 +Data Bit 7 18-25 Ground

COM 2 Port Connector

This 10-pin connector transfers serial data to and from the COM 2 port.

Figure A-6. COM 2 Port Connector

PinSignal Name (Direction)

1 Carrier Detect (Input)

2 Data Set Ready (Input)

3 Receive Data (Input)

4 Request To Send (Output)

5 Transmit Data (Output)

6 Clear To Send (Input)

7 Data Terminal Ready (Output)

8 Ring Indicator

9 Signal Ground

10 Unused

Hard Disk Connector

This connector supplies hard disk drive signals which interface with the software I/O drivers to provide the read/write

functions.