🚀 go-pugleaf

I've got an ..... *odd* situation here, and I could use some help.

I'm trying to attach an Apple Imagewriter (old style, Model A9M0303,
P/N 825-0568-A) as a standard serial printer on my PC clone running
Xenix (2.3.2, '386).  Why am I doing this, you may very well ask?
Well, I blew all my money on the Xenix system, and my housemate has
this perfectly good Imagewriter, and I _really_ wanted to be able to
print stuff out.

Anyway, I connected it up with a 25-pin cable, using pins number
2, 3, 7, 8, & 20.  It works fine, with one execption.  I seem to have
a flow control problem.  After about one page of printout, stuff gets
incredibly garbled, and eventually stops printing.  I set up the Xenix
side to use xon-xoff flow control, but the Imagewriter doesn't seem to
be using it.

Hence, the following questions:

1) Can an Imagewriter be set up to use xon/xoff flow control?  If so,
how? (Best)

2) Does an Imagewriter use ready/busy (RTS/CTS) flow control?  If so, 
does it use pins 4 & 5 or does it use pin 20? (Acceptable)

3) Has the Imagewriter been set up by Apple to use some sort of bizarre
Apple-esque flow control scheme, and thus rendered unusable by any other
form of hardware in the known uninverse?  (Worst)

The Imagewriter has no the standard "no user-servicable parts inside" 
message, so I don't want to do anything too drastic.   Plus, it's not 
mine.

All help, advice, suggestions, etc. appreciated.

    AtVhAaNkCsE,