Hi Ray,
Ok I just pulled the card out of one of my 800s. The terminal connects
to the top center DB-25 connector on the back of the 800. Internally, all
six of those ports connect to one cable that plugs into the top of the
Monitor card. See <
http://www.classiccmp.org/hp/mds-800/chas-ful.jpg>. (BTW
You do know that the CPU and FP cards need to be installed in specific
slots don't you? if not, then read
<
http://www.classiccmp.org/hp/mds-800/mds-800.htm>. It details the card
order. The first two cards must be in the correct slots. If you have
emulator cards or disk drive cards remove them till you get the system
working, there's some installation specifics about them too). The toogle
switch on the Monitor card needs to be turned towards the card. On the top
RH side of the card are two LSI ICS. Directly below them are two rows of
jumpers (straps) to set the baud rate. The only one installed is the one
from pad 25 to pad 26. I believe this cards is set for 9600 baud (or MAYBE
19200). I haven't used it in a while but it does work. I just grabbed some
terminal cables at random and the second one that I tried worked so it's
nothing specail. I use the same cable to connect to my SB-180. Down near
the bottom LH side of the card are a few more jumpers. These set the
address of the ROM. Mine has a circuit trace between ped 30 and 31. Your's
should already be set that way.
Once you get everything connected and turned on, press and release the
IRQ 1 switch to bring up the ROM monitor amd then press the space bar a few
times. You should get a display similar to
<
http://www.classiccmp.org/hp/mds-800/alive.jpg>. You won't get the baud
message, that's from my terminal. You should get the copywrit message and a
dot prompt. You can enter Q to get a list of the I/O reassignments.
To boot the disk drive, first power everything up then load a disk in
drive 1, turn on the BOOT switch (top part down) then press and release IRQ
2. Once the OS loads, turn the BOOT switch down otherwise the CPU won't
register the terminal key strokes. You should get a message like that
shownn at the bottom of the picture above.
Joe
At 10:59 AM 12/28/03 -0600, you wrote:
>Hello,
>
>I saw your MDS-800 systems. I too have some of this stuff. I am trying to
>hook up a terminal to my 800 but having no luck. I have no docs. Do you know
>what connector & its pinout, baud rate, etc. to connect RS-232 to?
>
>Thanks,
>
>Ray
>
Received on Mon Dec 29 2003 - 12:09:23 GMT
