7.3.3 Inversion Control

• IIA
  Invert Address: Input.
  Controls the sense of the signals on the OA outputs. If IIA is low then the outputs are normal (the lowest address will be represented by all OA outputs low.) If IIA is high, then the OA sense is inverted.

• IIB
  Invert Bus: Input.
  Controls the sense of the signals on the BB and IGA lines. If IIB is low then the signals are normal (eg. zero data will be represented by all BB signals low.) If IIB is high then the BB and IGA sense is inverted. This allows use of inverting or non-inverting level translators.

• IID
  Invert User Data: Input.
  Controls the sense of the signals on the BD lines. If IID is low then the signals are normal (eg. zero data will be represented by all BD signals low.) If IID is high, then the BD sense is inverted.