Radio Shack TRS-80 Model 16B

• Both use the 08-25 connectors on the back of the display
console.
Pin #
Channel 8
Standard
RS-232C Signal Pin #
The 08-25 connector pin-outs and signals available are listed
below,
Channel A
Standard
RS-232C Sigrlal
•
I/O Transmit S E.T.
Ground
Receive Data
Receiver Clock
Transmit Clock
Data Set Ready
Clear-la-Send
Carrier Detect
Transmit Data
Request-la-Send
Data Terminal Ready
15
1,7
3
17
24
6
5
8
2
4
20
Ground
Receive Data
Receiver Xmitter Clock
Data Set Ready
Clear-la-Send
Carrier Detect
Transmit Data
Request-la-Send
Data Terminal Ready
1,7
3
17
6
5
8
2
4
20
•
, 2 3 4 5 6 7 8 9 10 11 12 13
• • • • • • • • • • • • •
Parallel Interface
• Connection to a line printer via the 34-pin connector on the back
panel of the display console
• Eight data bits are output
in parallel
• Four data bits are input
• All levels are TTL compatible
The connector pin-outs and signals available are listed on the next
page.
•
24681012141618~22H~~~~M
• • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • •
1 3 5 7 9 11 13 1517 19 21 23 25 27 29 31 33
63