SEL32: Fix spelling errors in README.md.
SEL32: Correct interrupt processing sequence.
SEL32: Support multiple INCH status buffers for some devices.
SEL32: Adjust console timing during I/O.
SEL32: Fix simh crash if line printer defined, but not attached.
SEL32: Return no carrier status if ethernet not attached.
SEL32: Update diag.tap to revision 8.2 from 8.0.
SEL32: Continue code cleanup.
SEL32: Correct LPR status bit assignments.