## Input/Output Device Driver Reference

[prev][next][parent][TOC]

### Character Monitors

The bidirectional parallel port device driver does not support character monitors and therefore does not support the category 0Ah and 0Bh monitor IOCtl commands. It also does not support the following category 05h Parallel Port Control IOCtl commands related to code page and font switching (previously performed by a character monitor).

Activate Font
Query Active Font
Verify Font

The PRINTMONBUFSIZE= CONFIG.SYS statement is not used by the bidirectional parallel port device driver.