Need information on 3B2-300 ports.
Gunsul
prg at mgweed.UUCP
Sat Feb 2 09:53:26 AEST 1991
In article <297 at gcc.uucp>, smiley at gcc.uucp (Wise men still seek Him) writes:
> I am in the process of obtaining hardware documentation for an AT&T
> 3B2-300, but am in need of a minor piece of information before I receive
> it.
>
> I need descriptions of the console terminal port pinouts and the terminal
> port printouts (if they are not the same).
>
> This information will permit me to bring up the system and examine what
> is on it.
>
> Thanks in advance for any responses.
>
> Jim Smiley
8-Pin 25-Pin 25-Pin
Modular Jack or Plug Jack or Plug
Jack Printer or Terminal ACU MODEM
____ ________ ________
1 Prot Grd 1 Frame Ground 1 Frame Ground
2 Reserved 4 Reserved 5 Reserved
3 TXDO 3 Transmit Data 2 Transmit Data
4 DTRO 8 Data Term. Ready 20 Data Term. Ready
5 RXDO 2 Receive Data 3 Receive Data
6 DCDO 20 Data Carrier Det. 8 Data Carrier Det.
7 SIG GRD 7 Signal Ground 7 Signal Ground
8 RESERVED 5 Reserved 4 Reserved
| \ /
| \ /
| \ /
| \ /
\/
|----------| \--------------------------------/
pin 8 | |||||||| | pin 1 1 \ . . . . . . . . . . . . . / 13
| | \ . . . . . . . . . . . . /
| | 14 \______________________/ 25
|______| F R O N T
MODULAR JACK ON
3B2 COMPUTER
All ports on the 3B2 are (Console, Ports board, EPORTS, etc) are wired the
same as shown above.
Phil
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