Printronix MVP Series User Manual page 180

Option 63 — Data Lines and Response Line Logic Polarity with
MVP/L150
Lines in Option 63 are normally high active (positive true) but they may be
configured to low active (negative true) signals; Selected/Online, PE, and
Data Request are affected. Acknowledge, used in the Centronics interface,
remains low active.
Option
Number
.0
.1
NOTE: Option 64 is reserved for future use.
150B/L150B
Option
Number
.0
.1
8–12
Parallel Interface
Display Configuration
Description
Enable high active data and responsive lines logic polarity (default).
63.0
Enable low active data and responsive lines logic polarity.
63.1
Display Configuration
Description
Enable high active data and responsive lines logic polarity (default).
63.0
Enable low active data and responsive lines logic polarity.
63.1
Interfaces