TANDY  1000 HD  (25-1001)           Pinouts             Faxback Doc. # 1272

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

Printer - 34 pin card edge             Floppy - 34 pin card socket

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

Joystick - 6 pin DIN (2)        Keyboard - 8 pin DIN      RGB - DB-9 Female

1  Y Axis    2  X Axis          1  Keyboard Data          1  GND
3  GND       4  Switch 1        2  Keyboard Busy*         2  GND
5  +5V       6  Switch 2        3  GND                    3  Red
                                4  Keyboard Clock*        4  Green
Light Pen - DB-9 Male           5  +5V                    5  Blue
                                6  Keyboard Reset         6  Intensity
1  +5 v      2  GND             7  Mulit Data             7  +12V
3  LP IN     4  LP Switch       8  Multi Clock            8  Horizontal Sync
5  NC        6  NC                                        9  Vertical Sync
7  NC        8  NC              Power Connector (2)
9  NC                
                                1  +12V   (violet)        Composite Output
Speaker - 2 pin header          2  GND    (black) 
                                3  GND    (black)         A  Video
1 Sound      2 GND              4  +5V    (red)           B  Audio