25 May
2004
25 May
'04
10:42 a.m.
wai-sun chia wrote:
The console device is a DL11-W/M7856 which came with a
20mA
(orginal console was a TTY), which I don't have. BTW, the bootstrap
device is M7312. Therefore, I proceeded to make my own EIA cable
from the DL11 manual so that I can use my VT320. I made a standard
null modem configuration (BERG-DB25F) and made the necessary
9600/8N1 jumper changes to the DL11-W...
But you only receive the PDP-11's output, and your input gets lost?
Have you made sure you added the link to the Berg connector that
links the TTL-level serial data from the EIA receiver to the UART?
The UART feeds output data to both the EIA and current-loop output
drivers, but it need the link to select which of the two interfaces
is active for received data.
Sorry, I did this on a friend's PDP-11 and I don't have the print set
in front of me to give you the pin numbers.
--
John Honniball
coredump(a)gifford.co.uk