OBD1 code translation

[Chrispbrown36]

On the way in to class today the check engine light came on in my 87 Chevy V10 5.7L TBI. I pulled her over and checked the codes....32, 42 and 44.
32- EGR open command did not change MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal.
42- The EST signal did not change when the ECM applied bypass voltage to the ignition module.
44- Oxygen sensor voltage was under 0.2 volts for 50 seconds of closed loop operation.
Now....what in the heck am I reading here?