Has anyone connected a Pic16C74 to a IBM parallel printer port using the slave port?

I have no success-  here is what I tried:

Ibm's /STROBE to /WR /CS (on port E in slave mode -input mode of course), Ibm's BUSY and /ACK connected on C0 & C1 (set to outputs, of course).

I set up the PSP mode in TRIS_E
Pole TRIS_E.7 (PSP input buffer full)  

When I get a byte:
        I set busy high 
        wait 9us 
        pulse /ACK low for 9us
        read my data from port D
        do a quick output operation with the data
        set BUSY low and loop back

I also check the buffer overflow bit, and clear it just in case.
	
The unused printer port lines are tied properly, (SELECT, PAPEROUT, etc.)   the computer thinks it printed something, but all I get is garbage (rarely a character I actually sent).

I've tried both a ECP and standard port.

Is there something I'm not doing right with the parallel end?  The specs were obtained from a printer manual, and I have played some with the /ACK timings.

Any ideas?