TANDY 1000 RSX  (250-1454/55)          Pinouts         Faxback Doc. # 1814

Video Port Connector:                       Keyboard and Mouse Connectors:
Pin #  Function                             Pin #  Assignments

 1     Red Video                              1     Data
 2     Green Video                            2     Reserved
 3     Blue Video                             3     Ground
 4     Monitor ID Bit 2 (diagnostic)          4     +5VDC
 5     Ground                                 5     Clock
 6     Red Return (ground)                    6     Reserved
 7     Green Return (ground)
 8     Blue Return (ground)
 9     Key (no pin)
10     Sync Return (ground)
11     Monitor ID Bit 0 (ground)
12     Monitor ID Bit 1 (ground)
13     Horizontal Sync
14     Vertical Sync
15     Not Used (diagnostic)

Peripheral Interfaces:

RS-232C Serial Port:                 Parallel I/O Port:

Pin #  Assignments             Pin #  Assignments    Pin #  Assignments

 1     Carrier Detect           1     Strobe          10    Acknowledge
 2     Receive Data             2     Data Bit 0      11    Busy
 3     Transmit Data            3     Data Bit 1      12    Paper End
 4     Data Terminal Ready      4     Data Bit 2      13    Select
 5     Signal Ground            5     Data Bit 3      14    Auto Feed
 6     Data Set Ready           6     Data Bit 4      15    Error
 7     Request To Send          7     Data Bit 5      16    Initialize
 8     Clear To Send            8     Data Bit 6      17    Select In
 9     Ring Indicator           9     Data Bit 7      18-25 Ground


(smm 08/24/93)

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