Mystery IC: Allen Bradley 314B102

[Mouse]

>> [T]here's a whole lot of potential 'no, wait, I'm not ready!'
>> conditions.  Would they all be ORed onto one pin?
> Why not?  It's all the host really needs to know -- can I send
> another character or not.

Well...it can be very nice for the host to report "out of paper"
differently from "paper jam" differently from "motor or position
encoder failure" differently from "failed selftest" etc.

/~\ The ASCII				  Mouse
\ / Ribbon Campaign
 X  Against HTML		mouse at rodents-montreal.org
/ \ Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B