Improve serial port detection.

Add port names for serial port registers.
When detecting serial port, ignore top two bits of IIR register.
3 files changed
tree: ae57cfa4bde32747d6682ac7b80dbebc525a05a8
  1. src/
  2. tools/
  3. vgasrc/
  4. .gitignore
  5. COPYING
  6. COPYING.LESSER
  7. Makefile
  8. README
  9. TODO