🚀 go-pugleaf

OK, I give.  I have been trying to get Hack 1.0.2 running on a 3B20
w/ SVR2.  The program appears to start ok, but you must enter
exactly four commands to get any response. [To clarify, this begins
from the beginning-- When it asks if you are experienced, you would
have to enter, for example, y, a return, and two more characters. 
Up until this time, there is no output to the terminal.  When you
have entered the fourth character, the y is echoed properly, the
return would be taken as an answer to the next question {what
character are you?, etc....}]
Then to get any more action, you have to enter four more
commands, and until you do, there is no output to your terminal.
Once you enter four commands, it executes them, and waits until it
has four more.  It's always four, as near as I can tell. I've tried
using setvbuf to make all I/O unbuffered, but it doesn't seem to
help.  The input appears to be read OK, just in these weird four
command chunks.  (I've just tried simple one character commands so
far, e.g. movement.)  Anybody have any ideas?

Mark Modig
ihnp4!sftri!mom