terry@DEC-VAX-11-750.ARPA (03/15/88)
Hi all,
We have a VAX 8250 and on the back of the cabinet is a plate
which says "KA820". It has four ports, numbered 0-4, and
0 is used as the console port.
Problem: Ports #1-3 do not show up in the configuration
after the system is booted. They say they are
async comm ports.
Question: Is this normal? Can I somehow configure and use these
ports?
Secondary question: Is the KA820 what makes an 8200 an 8250?
Thanks in advance....
Terry Robb
P.S. You can send your answer to the net, but please send a
copy directly to me also. Thanks again.KARCHER%MIT.MFENET@NMFECC.ARPA (03/17/88)
In response to your INFOVAX posting on KA820 serial line units:
To connect the remaining serial line units for use on an 8200/8250/8300/8350 use
the sysgen commands:
SYSGEN> CONNECT SLU=1
SYSGEN> CONNECT SLU=2
SYSGEN> CONNECT SLU=3
After which devices TCA0, TCB0 and TCC0 will appear.
The only difference between a 8200/8300 and 8250/8350 is the CPU module. The
older slower modules are known as T1001 and the newer faster ones are T1001-YA.
---
C. A. Karcher
MIT Plasma Fusion Center
KARCHER%MIT.MFENET@NMFECC.ARPA
KARCHER%MIT.MFENET@ANLVMS.BITNET
KARCHER%PFCVAX@MIT-XX.LCS.MIT.EDU.ARPAZWARTS@HGRRUG51.BITNET (03/18/88)
> We have a VAX 8250 and on the back of the cabinet is a plate which says > "KA820". It has four ports, numbered 0-4, and 0 is used as the console > port. > Problem: Ports #1-3 do not show up in the configuration after the system > is booted. They say they are async comm ports. > Question: Is this normal? Can I somehow configure and use these ports? This is normal. In order to configure these ports issue the following commands: $ RUN SYS$SYSTEM:SYSGEN connect slu=1 connect slu=2 connect slu=3 After this you have the ports TCA0:, TCB0: and TCC0:. These ports have a maximum speed of 1200 baud and are very expensive in use (one interrupt per character I/O). > Secondary question: Is the KA820 what makes an 8200 an 8250? I thought that the KA820 is the 8200 processor. We have a Vax 8300, which has two KA820 processors. F. Zwarts Phone: (+31)50-633619 Kernfysisch Versneller Instituut Bitnet/Earn: ZWARTS@HGRRUG51 Zernikelaan 25 Surfnet: KVIANA::ZWARTS 9747 AA Groningen Telefax: (+31)50-634003 The Netherlands Telex: 53410 rugro nl