The mode chosen by the software driver is based on the connected device. 1-Compatibility mode supports the Centronics interface at 150 KB/sec. 2-Nibble mode supports Bi-tronics; HP's parallel port ...

One interesting design point was the use of the 74LVC161284 special function bus interface that handles the 5 V tolerance that the RP2040 lacks, whilst making the project compliant with IEEE-1284 ...

The Centronics interface was superseded by the IEEE 1284 standard in 1994. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.