TANDY  1000 RL/HD  (25-1450/51)        Pinouts          Faxback Doc. # 1305

GND = Ground     NC = Not Connected     * = Active Low Signal

Printer - 25 pin (D-Sub):              Floppy - 34 pin (header)

1   Strobe*          18  GND             1   NC         2   NC
2   Data 0           19  GND             3   +5V (+)    4   NC
3   Data 1           20  GND             5   +5V (+)    6   NC
4   Data 2           21  GND             7   +5V (+)    8   Index*
5   Data 3           22  GND             9   +5V (+)    10  Drive Select 0*
6   Data 4           23  GND             11  +5V (+)    12  Drive Select 1*
7   Data 5           24  GND             13  GND        14  Drive Select 2*
8   Data 6           25  GND             15  GND        16  Motor On*
9   Data 7                               17  GND        18  Direction*
10  Acknowledge*                         19  GND        20  Step*
11  Busy                                 21  GND        22  Write Data*
12  Paper Out*                           23  GND        24  Write Enable*
13  Select* (busy*)                      25  GND        26  Track 0*
14  Auto Feed*                           27  GND        28  Write Protect*
15  Fault*                               29  +12V (+)   30  Read Data*
16  Initialize*                          31  +12V (+)   32  Side Select*
17  Select In                            33  +12V (+)   34  Disk Change*

Joystick - 6 pin DIN(2):  Keyboard/Mouse - PS/2(2):  RGB Video - DB-9 Female:

1  Y Axis    2  X Axis         1  Data                     1  GND
3  GND       4  Switch 1       2  Reserved                 2  GND
5  +5V       6  Switch 2       3  Ground                   3  Red
                               4  +5 Vdc                   4  Green
Serial Port - DB-9 Male:       5  Clock                    5  Blue
                               6  Reserved                 6  Intensity
1  Carrier Detect                                          7  Green (MONO)
2  Receive Data             Power Connector (1):           8  Horizontal Sync
3  Transmit Data                                           9  Vertical Sync
4  Data Terminal Ready      1  +12V   (violet)
5  Signal Ground            2  GND    (black)         Audio Jack:
6  Data Set Ready           3  GND    (black)    
7  Request to Send          4  +5V    (red)         1  Sound    2  GND
8  Clear to Send
9  Ring Indicator        Speaker - 2 pin header:    Microphone Jack:

                          1  Sound     2  GND       1  Audio In   2 GND