TANDY 1000 TX  (250-1600)           Pinouts             Faxback Doc. # 1164

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

Printer - 34 pin card edge:          Floppy - 34 pin (header and card socket):

1  Strobe*          2  GND           1  NC               2  Low Speed*
3  Data 0           4  GND           3  +5V (+)          4  NC
5  Data 1           6  GND           5  +5V (+)          6  NC
7  Data 2           8  GND           7  +5V (+)          8  Index*
9  Data 3           10 GND           9  +5V (+)          10 Drive Select 0*
11 Data 4           12 GND           11 +5V (+)          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 Select* (busy*)  26 NC            25 GND              26 Track 0*
27 Auto Feed*       28 Fault*        27 GND              28 Write Protect*
29 NC               30 Initialize*   29 +12V (+)         30 Read Data*
31 GND              32 NC            31 +12V (+)         32 Side Select*
33 GND              34 +5V           33 +12V (+)         34 Disk Change*
                                   (+) voltages not available to 5 1/4" drive

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
Serial Port - DB-9 Male:        5  +5V                    5  Blue
                                6  Keyboard Reset         6  Intensity
1  Carrier Detect               7  Multi Data             7  +12V
2  Receive Data                 8  Multi Clock            8  Horizontal Sync
3  Transmit Data                                          9  Vertical Sync
4  Data Terminal Ready          Power Connector (1):
5  Signal Ground                                          Composite Output:
6  Data Set Ready               1  +12V   (violet) 
7  Request to Send              2  GND    (black)         A  Video        
8  Clear to Send                3  GND    (black)         B  Audio
9  Ring Indicator               4  +5V    (red)                   
                                                     Speaker - 2 pin header:

                                                    1  Sound     2  GND