TANDY 2000 (260-5103) Pinouts Faxback Doc. # 1944
GND = Ground NC = Not Connected * = Active Low Signal
Printer - 34 pin header: Floppy - 34 pin card socket:
1 Strobe* 2 GND 1 GND 2 NC
3 Data 0 4 GND 3 GND 4 In Use*
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 Select* (busy*) 26 Strobe In 25 GND 26 Track 0*
27 GND 28 Fault* 27 GND 28 Write Protect*
29 In 0 30 In 1* 29 GND 30 Read Data*
31 GND 32 In 2 31 GND 32 Side Select*
33 GND 34 Buffer Full 33 GND 34 Drive Ready*
Keyboard - 5 pin DIN: Monochrome - 8 pin DIN: Serial Port - DB-25 Female:
1 Keyboard Data 1 NC 1 GND
2 Keyboard Busy* 2 GND 2 Transmit Data
3 GND 3 Intensity 3 Receive Data
4 Keyboard Clock* 4 Horizontal Sync 4 Request to Send
5 +5V 5 Vertical Sync 5 Clear to Send
6 NC 6 Data Set Ready
Power Connector (2): 7 Video Signal 7 Signal Ground
8 NC 8 Carrier Detect
1 +12V (orange) 9 NC
2 GND (black) Speaker - 2 pin header: 10 NC
3 GND (black) 11 NC
4 +5V (red) 1 Sound 2 GND 12 NC
13 NC
Color Monitor on Mouse Interface on 14 NC
Graphics Board: Digi-Mouse Board: 15 Transmit Clock
16 NC
1 GND 1 GND 17 Receive Clock
2 GND 2 +5V 18 NC
3 Red 3 Switch 3* 19 NC
4 Green 4 X-Axis Phase A 20 Data Terminal Ready
5 Blue 5 X-Axis Phase B 21 NC
6 Intensity 6 Switch 2* 22 Ring Indicator
7 NC 7 Switch 1* 23 NC
8 Horizontal Sync 8 Y-Axis Phase A 24 NC
9 Vertical Sync 9 Y-Axis Phase B 25 NC